Model 5300Model 5300Model 5300Model 5300Model 5300

Three PhaseThree PhaseThree PhaseThree PhaseThree PhasePPPPPower Analyzerower Analyzerower Analyzerower Analyzerower Analyzer

UserUserUserUserUser’s Manual’s Manual’s Manual’s Manual’s Manual

While every precaution has been exercised in the compilation ofthis document, Magtrol, Inc. assumes no responsibility for errorsor omissions. Additionally, no liability is assumed for any damagesthat may result from the use of the information contained withinthis publication.

Trademark Acknowledgments

GPIB-PC is a trademark of National Instruments Corporation.

IBM is a registered trademark International Business Machines Corporation.

QuickBASIC is a registered trademark of Microsoft Corporation.

GE-MOV is a registered trademark of the General Electric Corporation.

FLUKE is a registered trademark of the John Fluke Mfg. Company.

Microsoft is a registered trademark of Microsoft Corporation.

Supercon is a registered trademark of the Superior Electric Company.

wwwwwwwwwww.w.w.w.w.mmmmmagtragtragtragtragtroooool.cl.cl.cl.cl.cooooommmmm

Sales and TSales and TSales and TSales and TSales and Technical Assistanceechnical Assistanceechnical Assistanceechnical Assistanceechnical Assistance

Manufacturers of:

Motor Test Equipment!

Hysteresis Brakes and Clutches

70 Gardenville ParkwayBuffalo, New York 14224 USA

Tel: (716) 668-5555 or 1-800-828-7844Fax: (716) 668-8705

MAGTROL, INC.MAGTROL, INC.MAGTROL, INC.MAGTROL, INC.MAGTROL, INC.

Rev. A 08/00

iii

TTTTTable of Contentsable of Contentsable of Contentsable of Contentsable of Contents

SALES AND TECHNICAL ASSISTANCE .............................................................................................. ii

1 - INTRODUCTION ................................................................................................................................ 1Abbreviations ...................................................................................................................................................... 1

Unpacking ........................................................................................................................................................... 1

Power .................................................................................................................................................................. 1

Fuse Replacement ............................................................................................................................................... 1

Safety .................................................................................................................................................................. 1

Connectors .......................................................................................................................................................... 1

Maximum Ratings............................................................................................................................................... 1

Installation ........................................................................................................................................................... 2ORIENTATION .................................................................................................................................................................... 2ELECTRICAL LOAD ............................................................................................................................................................ 2IEEE-488 (GPIB) ........................................................................................................................................................... 2

Initial Checkout ................................................................................................................................................... 2

Transient Overloads ............................................................................................................................................ 2

Current Overload................................................................................................................................................. 2

2 - SPECIFICATIONS ............................................................................................................................. 3Voltage ................................................................................................................................................................ 3

Current ................................................................................................................................................................ 3

Meter Impedance ................................................................................................................................................. 3

Resolution ........................................................................................................................................................... 3Isolation ............................................................................................................................................................... 3

Display Auto Zero ............................................................................................................................................... 3

Analog Outputs ................................................................................................................................................... 3

Data Acquisition ................................................................................................................................................. 3ANALOG ........................................................................................................................................................................... 3DIGITAL ........................................................................................................................................................................... 4

Measurement Accuracy ....................................................................................................................................... 4

Accuracy Certification ........................................................................................................................................ 4

3 - CONNECTING THE 5300 .................................................................................................................. 5Surge Protection .................................................................................................................................................. 5

Figure 1. Transient Voltage Suppression ..................................................................................................... 5

Connectors .......................................................................................................................................................... 5AMPS ............................................................................................................................................................................... 5VOLTS .............................................................................................................................................................................. 5

Single Phase AC or DC Connections ................................................................................................................. 6Figure 2. Single Phase AC or DC Connections ........................................................................................... 6

3-Phase 3-Wire Delta Connections ..................................................................................................................... 7Figure 3. 3-Phase 3-Wire Delta Connections .............................................................................................. 7

3-phase, 3-Wire WYE Connections .................................................................................................................... 7

iv

Figure 4. 3-phase, 3-Wire WYE Connections ............................................................................................... 7

3-Phase, 4-Wire WYE Connections ................................................................................................................... 8Figure 5. 3-Phase, 4-Wire WYE Connections .............................................................................................. 8

3-Phase, Current and Potential Transformer Connections.................................................................................. 8Figure 6. 3-Phase, Current and Potential Transformer Connections ......................................................... 8

4 - OPERATION ...................................................................................................................................... 9General ................................................................................................................................................................ 9

Amperes Display ................................................................................................................................................. 9

Voltage Display .................................................................................................................................................. 9

Watts or Power Factor ........................................................................................................................................ 9Mode Selections ................................................................................................................................................ 10

Figure 7. Mode Selections .......................................................................................................................... 10MODE HOLD ................................................................................................................................................................... 10MODE AVG ................................................................................................................................................................... 10MODE POWER FACTOR (PF) ........................................................................................................................................... 10MODE PH. V. ................................................................................................................................................................ 10

Display Selections ............................................................................................................................................. 11Figure 8. Display Selections ....................................................................................................................... 11

DISPLAY Ø1, Ø2, Ø3 ..................................................................................................................................................... 11DISPLAY SKW ............................................................................................................................................................... 11

Voltage Ranges ................................................................................................................................................. 11Figure 9. Voltage Range Selections ............................................................................................................ 11

Amperes Range ................................................................................................................................................. 12Figure 10. Current Range Selections ........................................................................................................... 12

Analog Output Option ...................................................................................................................................... 12Figure 11. Analog Output Connections ........................................................................................................ 12

5 - CT/PT INSTALLATION .................................................................................................................... 13Calibration ......................................................................................................................................................... 13

CT/PT Detection ............................................................................................................................................... 13Figure 12. Current & Potential Transformer Selections ............................................................................. 13

CT/PT Ratio Range ........................................................................................................................................... 13

Digital Range .................................................................................................................................................... 13

GPIB-CT/PT Programming .............................................................................................................................. 13

Changing or Removing CT/PT Values ............................................................................................................. 14

6 - GPIB COMMUNICATION................................................................................................................. 15GPIB (IEEE-488) .............................................................................................................................................. 15

Hardware Installation ........................................................................................................................................ 15

Software Installation ......................................................................................................................................... 15

Primary Address ................................................................................................................................................ 15Figure 13. GPIB Address Selection .............................................................................................................. 15

7 - 5300 PA INSTRUCTION SET .......................................................................................................... 16PC to 5300 PA .................................................................................................................................................. 16

5300 PA to PC .................................................................................................................................................. 16

v

"SGL" INSTRUCTION ....................................................................................................................................................... 16"FULL" INSTRUCTION ....................................................................................................................................................... 16

Data Rate ........................................................................................................................................................... 17

“Open” Instruction ............................................................................................................................................ 17

Instruction ......................................................................................................................................................... 17

Programming Example ..................................................................................................................................... 17

8 - OPERATING PRINCIPLES.............................................................................................................. 19Amperes Transducing ....................................................................................................................................... 19

Figure 14. 5300 Current Shunt Inputs .......................................................................................................... 19

Voltage Sensing ................................................................................................................................................ 19Analog Processing ............................................................................................................................................ 19

Figure 15. 5300 Block Diagram ................................................................................................................... 20

Digital Processing ............................................................................................................................................. 20

Display “Help” .................................................................................................................................................. 20

Polyphase Line Balance .................................................................................................................................... 20

9 - CALIBRATION ................................................................................................................................. 21General .............................................................................................................................................................. 21

Figure 16. Calibration Verification Test Setup ............................................................................................ 21

Test Setup.......................................................................................................................................................... 21

Calibration Verification .................................................................................................................................... 22VOLTS CALIBRATION CHECK F1 ....................................................................................................................................... 22AMPERES CALIBRATION CHECK ........................................................................................................................................ 23WATTS CALIBRATION CHECK ........................................................................................................................................... 23

Minor Adjustment (If Needed) ......................................................................................................................... 23Figure 17. Trimpot Adjustment Locations .................................................................................................... 24

VOLTS ZERO ................................................................................................................................................................... 24AMPERES ZERO ............................................................................................................................................................... 24VOLTS SCALE FACTOR ..................................................................................................................................................... 24AMPERES SCALE FACTOR ................................................................................................................................................. 24VOLTS BALANCE ............................................................................................................................................................. 25CURRENT BALANCE ......................................................................................................................................................... 25WATTS SCALE FACTOR .................................................................................................................................................... 25

APPENDIX A: SCHEMATIC DRAWINGS ........................................................................................... 26Circuit Board 78B128 - LED Display .............................................................................................................. 26Circuit Board 78B145 - Digital Readout & MPU ............................................................................................ 27

Circuit Board 78B146 - Analog Input board .................................................................................................... 28

Circuit Board 78B147 - Converter Board ......................................................................................................... 29

Circuit Board 78B149 - Switchboard ............................................................................................................... 30

Circuit Board 78B153 - Switch Interface ......................................................................................................... 31

Circuit Board 78B154 - Counters Board .......................................................................................................... 32

Circuit Board 78B175 ....................................................................................................................................... 33

MAGTROL LIMITED WARRANTY ....................................................................................................... 34

vi

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1

ABBREVIATIONS

PA - Model 5300 Power Analyzer.

GPIB - IEEE-488 Instrument Bus Standard.

LED - front panel indicator light.

A, V, W, PF and VA: Amperes, Volts, Watts, PowerFactor and Volt Amperes, respectively

MPU - Microprocessor unit.

LSD, LSB - least significant digit or bit.

CMRR - common mode rejection ratio.

UNPACKING

The Model 5300 is packed in reusable, shock resistantpacking material that will protect the instrument duringnormal handling. In the event of shipping damage,immediately notify the carrier and Magtrol CustomerService Dept. Save all shipping materials for reuse whenreturning the instrument for calibration or servicing.

POWER

The 5300 PA is factory wired for either 120 or 240Vrms, 50/60 Hz, power at 120 volt amps, max. Theline cord is a detachable NEMA standard 3 wire whichplugs into the rear access power entry and filter moduleof the 5300 PA. The line cord must be detached fromthe PA during servicing.

NOTE: The standard 5300 is factorywired for 120 Vrms power.Wiring for 240 Vrms is availableon special order.

FUSE REPLACEMENT

Remove the line cord and carefully pry up and removethe fuse holder. Use a 2 Amp slow blow fuse for 120Vrms or a 1 Amp slow blow fuse for 240 Vrms power.

1 - Introduction1 - Introduction1 - Introduction1 - Introduction1 - Introduction

SAFETY

Securely ground the 5300 PA case by connecting a goodearth ground at the ground stud that is located on therear panel. Use a number 12 AWG wire, or larger.

CONNECTORS

The following plugs mate with 5300 PA connectors:

Superior Electric Supercon®

INPUT (plug, red, female) - PS100GR

OUTPUT (plug, red, male) - PP100GR

VOLTS HIGH (plug, black, female) - PS25GB

VOLTS LOW (plug, white, female) - PS25GWT

For your convenience, the above connectors are suppliedwith your 5300 PA.

Use only the above connectors.

NOTE : GPIB (IEEE-488) 24 Pin busstandard cable is not includedwith the 5300 PA and must beordered separately.

MAXIMUM RATINGS

LOAD current: 100 Amperes rms, continuous.

200 Amperes rms, 5 sec. max.

REMOTE VOLTAGE SENSE: Line to line is 600Vrms. Also, do not exceed 600 Vrms differentialbetween the VOLTS INPUT and AMPS OUTPUTterminals.

2

Magtrol Model 5300 Three Phase Power AnalyzerChapter 1 - Introduction

INSTALLATION

ORIENTATION

The 5300 PA must be mounted within ± 20 degreesfrom horizontal. This ensures proper operation of themercury shunt bypass relays.

ELECTRICAL LOAD

Use wire rated for the maximum load current and voltageexpected.

Hint: Use wire gauge large enough to ensure goodconnector set screw compression on the wire leads.Soldering may be used instead of, or in addition to theset screw.

IEEE-488 (GPIB)

Use only high quality shielded cable conforming to thebus standards.

INITIAL CHECKOUT1. Make sure the circuit is completely de-energized

by removing all voltage sources.

2. Plug the 5300 PA into the 50/60 Hz power mains.

3. Switch the POWER rocker switch (red) to ON andobserve that the digit readouts flash on-off-on andthen indicate zero or a small number.

4. The VOLTS and AMPERES range switch indicatorlights will all illuminate. The voltage ranges willsequence down from 600 through 150, and thecurrent ranges will sequence down from 100 through5.

5. The 150 Volt and 5 Amp and AUTO indicatorsremain illuminated. The MODE indicators will notlight during this power-on sequencing.

6. Your 5300 PA has passed the initial check.

TRANSIENT OVERLOADS

Connect an appropriate transient suppressor in parallelwith all inductive loads. Consult the suppressor vendor'sapplication literature for proper selection and sizing.

Damage to the 5300 can result fromexcessive voltage transients generatedby unsuppressed inductive loads. Thisdamage is not within the scope of thenormal instrument service and is notcovered by the Magtrol Warranty.

CURRENT OVERLOAD

There are no fuses in the 5300 PA measuring circuits.Therefore, excessive current passed through the AMPSterminals will cause excessive internal heating andpossible unit damage.

This overload abuse is not covered bythe Magtrol Warranty.

Know your load conditions and double check allconnections. If an overload should occur, immediatelyremove all power, and locate and correct the problembefore re-energizing your circuit. If a circuit breaker isinstalled, it must be installed on the LOAD side of the5300 (downstream). This will keep the low impedanceof the input line connected to the 5300 PA for surgesuppression. If the line side must also contain a breaker,it should be delayed in operation to open after the loadside breaker has opened.

3

2 - Specifications2 - Specifications2 - Specifications2 - Specifications2 - Specifications

VOLTAGE

Three DC and AC Ranges:

• 150, 300, and 600 Volts DC and Volts rms.

Remote Voltage Sensing:

• Differential input - 110 dB CMRR.

• Maximum of 30 Volts peak, volts low terminalto amps output terminal.

CURRENT

Three DC and AC Ranges:

• 5, 25 and 100 Amps DC and Amps rms.

METER IMPEDANCE

Voltage, DC or AC:

• 3 Megohm load on each voltage range.

Current, DC or AC Ranges:

• 0.016 Ohm shunt resistance for 5 Amp range.

• 0.003 Ohm shunt resistance for 25 Amp ranges.

• 0.001 Ohm shunt resistance for 100 Amp range.

RESOLUTION

Processing resolution is 16 binary bits.

Voltage Display Resolution:

• All ranges < 9.999 V is ± 0.001 Volt.• Ranges > 10 V and < 99.9 V is ± 0.01 Volt.

• Ranges > 100 V is ± 0.1 Volt.

Current Display Resolution:

• All ranges < 9.999 A is ± 0.001 Amp.

• Ranges > 10 A and < 50 A is ± 0.01 Amp.

Power Display Resolution:

• Better than 0.015 % of the product of the activeVoltage and Amperes ranges.

GPIB: Amps, Volts and Watts

• Same as display resolution.

ISOLATION

1500 Vrms break down from input circuit to chassis(ground).

DISPLAY AUTO ZERO

When the A and V display indication is less than 0.5 %of range, the displayed value is set to ZERO. Refer toSection 5 - CT/PT Installation to disable the AUTOZERO function.

ANALOG OUTPUTS

This is an optional feature.

Analog AMPS, VOLTS and WATTS output signalsare DC proportional signals of 5.00 volts at full scale,for each AMPS, VOLTS and WATTS range. Ripple isless than 5 millivolts. The outputs are low impedanceoperational amplifiers <1 Ohm and <4 milliamperescurrent capacity. Each monitor signal and the commonare electrically isolated from the monitored circuits.Isolation voltage is 750 Volts continuous and 2500 Voltstest breakdown. Leakage current is less than 0.3 microAmps at 240 Vrms, 60 Hz. Vrms

DATA ACQUISITION

ANALOG

The conversion of true rms to DC is expressed as:

Vrms ≡ ( )1 2

0Tv t dt

T

∫• Rms to DC conversion averaging time constant:

Volts and Amps time constant TC ≅ 60 msec.

Watts time constant TC ≅ 120 msec.

Watts = V × I × cos θ (instantaneous)

4

Magtrol Model 5300 Three Phase Power AnalyzerChapter 2 - Specifications

DIGITAL

• Processing:

Integration period = 0.10 second.

Display update time = 2 readings per second.

• IEEE-488 (GPIB):

Synchronized = 0.1 sec. per reading

Non-synchronized is 0.04 to 0.07 sec perreading.

MEASUREMENT ACCURACY

Specified test conditions: Ambient temperature of 72°± 10°F and power factor of 0.1 to 1.0, lead or lag.

VOLTAGE - DC + (0.1% of reading + 0.2% of range)

VOLTAGE - AC:

10 Hz to < 20 Hz + 1.0% of range

20 Hz to < 45 Hz + (0.2% of reading + 0.3% of range)

45 Hz to < 10 kHz + (0.1% of reading + 0.2% of range)

10 kHz to 20 kHz + (0.2% of reading + 0.5% of range)

CURRENT - DC 25 and 100 Amp Ranges

+ (0.1% of reading + 0.2% of range)

CURRENT - AC: 5 Amp Range

10 Hz to < 20 Hz + 1.0% of range

20 Hz to < 45 Hz + (0.2% of reading + 0.3% of range)

45 Hz to < 1 kHz + (0.1% of reading + 0.2% of range)

1 kHz to < 5 kHz + (0.2% of reading + 0.3% of range)

5 kHz to < 10 kHz + (1.0% of reading + 1.0% of range)

10 kHz to 20 kHz + (2.0% of reading + 2.0% of range)

25 Amp Range

10 Hz to < 5 kHz same as 5 Amp range

5 kHz to 10 kHz + (2.0% of reading + 2.0% of range)

100 Amp Range

10 Hz to < 1 kHz + 0.5% of rng

1 kHz to 2 kHz + (2.0% of reading + 2.0% of range)

POWER - DC + (0.1% of reading + 0.2% of VA range)

POWER - AC ± [(0.1% of reading + 0.2% of (Ampsrange × Volts range)]

POWER FACTOR + (VA error ± W error)

CREST FACTOR Exceeds 3:1 (at 50% of range full scale)

TEMPERATURECOEFFICIENT + 0.01% of range per deg. C maximum

DISPLAY Digital display error ± 1 LSB.

ACCURACY CERTIFICATION

All instruments are shipped with a Certificate ofCalibration from Magtrol Inc. Magtrol policies andprocedures comply with MIL-STD-45662A.Measurement standards are traceable to the NationalInstitute of Standards and Technology (NIST).

Instrument calibration every six calendar months isnecessary to maintain full compliance with allspecifications. If a one year calibration cycle is used,all accuracy specifications are reduced by 0.1%. Afterone calendar year, the instrument is considered to beout of calibration.

5

3 - Connecting the 53003 - Connecting the 53003 - Connecting the 53003 - Connecting the 53003 - Connecting the 5300

Always install a properly rated circuitbreaker or fuse between the 5300 analyzerand the load. Also, make sure that yourpower source has its own fast-actingdisconnect and overload protection. See"Current Overload" in Chapter 1 -Introduction. Wire according to allapplicable wiring codes, making sure thewire gauge and insulation ratings areadequate for your application.

SURGE PROTECTION

Use Metal Oxide Varistors (MOV) or other equivalenttransient suppressors connected between lines at the load(across the load). These suppressors are an absolutenecessity when inductive loads are used. In 3-phasesystems, each load must have a suppressor. See Figure1 below.

CONNECTORS

Use the supplied Supercon® connectors.

AMPS

INPUT - PLUG, RED, FEMALE-(PS100GR)

OUTPUT - PLUG, RED, MALE-(PP100GR)

VOLTS

HIGH - PLUG, BLACK, FEMALE-(PS25GB)

LOW - PLUG, WHITE, FEMALE-(PS25GWT)

SINGLE PHASE AC or DC CONNECTIONS

Figure 1. Transient Voltage Suppression

MOVMOV

MOV MOV

MOV

MOV

MOV

L1

L2

L3

(LOAD)(LINE 1)

VMOV >VLINE TO LINE

LINE TO LINEMOV >V V

LINE TO LINEVVMOV > 31

L1

L2

L3

NEUTRAL

(LOAD)(LINE 1)

(LOAD)(LINE)

HIGHLINE

LINELOW

DELTA CONNECTEDTHREE PHASE LOAD

WYE CONNECTEDTHREE PHASE LOAD

SINGLE PHASE TWO WIRE LOAD

6

Magtrol Model 5300 Three Phase Power AnalyzerChapter 3 - Connecting the 5300

SINGLE PHASE AC OR DCCONNECTIONS

See figure 2.

NOTE: Connections are shown groupedin cables.

This diagram shows the phase 1 (Ø1) voltage and currentinputs connected for measurement. However, any ofthe 3-phase inputs can be used. The unused two inputsare jumpered to insure zero inputs.

Power in watts is calculated as follows:

P = E × I × cos q

( where q is the phase angle between E and I)

On the 5300, select DISPLAY - Ø1 and

MODE -PH. V.

The 5300 displays VOLTS, AMPS and WATTS.

This circuit uses the 5300 PA remote voltage sensefeature by measuring the voltage at the load. Thisincreases measurement accuracy by eliminating linevoltage drop from the power measurement. For safety,an overload circuit breaker (CB) removes all loadvoltage during an over-current condition. The voltagesense lines are connected at the line side of CB to helpprevent inductive transients from entering the PA asthe CB opens. Make sure that connections from CB tothe load are heavy conductors and short as possible.

If a circuit breaker is used in the input lineto the 5300 PA, a circuit should be usedthat prevents the breaker from opening untilafter the load side breaker has opened.Otherwise, potentially damaging inductivetransients can be applied to the 5300 PA.Damage caused by these transients areoutside the scope of the MAGTROLWARRANTY.

For voltage sense lines less than 25 feet inlength, a twisted pair of #20 gauge (orlarger) wire can be used. For lines longerthan 25 feet or lines grouped with other ACconductors, shielded cable should be used.Connect the shield at the 5300 PA GNDterminal. If the wires connecting the load tothe 5300 PA OUTPUT are short and theresulting voltage drop is insignificant, thevoltage sense connections can be made atthe rear panel of the 5300 PA.

Connect the chassis ground terminal toa good earth ground. Use at least #12gauge insulated copper wire.

Figure 2. Single Phase AC or DC Connections

INPUT AMPS OUTPUT VOLTS

Ø1

Ø2

Ø3

HIGHLOWLOW

(WHITE)

CB

LOAD

EARTH(BLACK)

HIGH

VOLTAGE SENSE

LOAD

VLINE = VLOAD1

1 SURGE PROTECTION NOT SHOWN

5300 PA

2 INDICATES CABLING WITH 2 CONDUCTORS.

CABLE MUST BE FULL LOAD

2

2

ILINE = ILOAD

R

R W B

BW

W BR

Ø1

Ø2

Ø3

R

R

R

7

Magtrol Model 5300 Three Phase Power Analyzer Chapter 3 - Connecting the 5300

3-PHASE 3-WIRE DELTA CONNECTIONS

The power dissipated in each phase (PØ) is equal to the product of phase voltage ( Ephase), phase current (Iphase) andcosine of the phase angle θ between the phase voltage and phase current:

PØ = Ephase × Iphase × cos θ

Each phase power is displayed on the 5300 PA by selecting DISPLAY - Ø1,Ø2 or Ø3 push switch. Total powerconsumed by the load is the algebraic sum of the 3-phases power measurements:

PTOTAL = PØ1 + PØ2 + PØ3

The total power is displayed on the 5300 PA by selecting the DISPLAY - ΣKW push switch.

PTOTAL = ΣKW

Also, the general discussion for Figure 1 (surge protection) and Figure 2 (single phase AC & DC connection) apply.

Figure 3. 3-Phase 3-Wire Delta Connections

INPUT AMPS OUTPUT VOLTS

Ø1

Ø2

Ø3

HIGHLOW

EARTH

1 SURGE PROTECTION NOT SHOWN

5300 PA

2 INDICATES CABLING WITH 2 CONDUCTORS.

CABLE MUST BE FULL LOAD

R

R W B

BW

W BR

Ø1

Ø2

Ø3

R

R

R

L1

L2

L3

LINE

1

FOR BALANCED SYSTEM

3I LINE PHASE= I

LOAD

LOA

D

LOA

D

CB

VOLTAGE SENSE

LOAD

2

2

LINE TO LINEV VPHASE=

3-PHASE, 3-WIRE WYE CONNECTIONS

Power conversion formulas for the 3-phase WYE connection are the same as for the DELTA connection as describedabove. Each phase power is displayed on the 5300 PA by selecting the DISPLAY - Ø1,Ø2 or Ø3 push switch. Thetotal power is displayed on the 5300 PA by selecting DISPLAY - ΣKW push switch. Also, the general discussion forFigure 1 (surge protection) and Figure 2 (single phase & DC connection) apply.

Figure 4. 3-phase, 3-Wire WYE Connections

INPUT AMPS OUTPUT VOLTS

Ø1

Ø2

Ø3

HIGHLOW

EARTH

1 SURGE PROTECTION NOT SHOWN

5300 PA

R

R W B

BW

W BR

Ø1

Ø2

Ø3

R

R

R

L1

L2

L3

LINE

1

FOR BALANCED SYSTEM

LINEI PHASE= ILOAD

CB

VOLTAGE SENSE

LOAD

3LINE TO LINEV VPHASE=

LOAD

LOAD

8

Magtrol Model 5300 Three Phase Power AnalyzerChapter 3 - Connecting the 5300

3-PHASE, 4-WIRE WYE CONNECTIONS

Figure 5. 3-Phase, 4-Wire WYE Connections

INPUT AMPS OUTPUT VOLTS

Ø1

Ø2

Ø3

HIGHLOW

EARTH

1 SURGE PROTECTION NOT SHOWN

5300 PA

R

R W B

BW

W BR

Ø1

Ø2

Ø3

R

R

R

L1

L2

L3

NEUTRAL

LINE

1

FOR BALANCED SYSTEM

LINEI PHASE= ILOAD

CB

VOLTAGE SENSE

LOAD

3LINE TO LINEV VPHASE=

LOAD

LOAD

Power conversion formulas for the 3-phase 4-wire WYE connection are the same as for the DELTA connection,above. Each phase power is displayed on the 5300 PA by selecting the DISPLAY - Ø1,Ø2 or Ø3 push switch. Thetotal power is displayed on the 5300 PA by selecting DISPLAY - ΣKW push switch. Also, the general discussion forFigure 1 (surge protection) and Figure 2 (single phase & DC connection) apply.

3-PHASE, CURRENT AND POTENTIAL TRANSFORMER CONNECTIONS

Figure 6. 3-Phase, Current and Potential Transformer Connections

INPUT AMPS OUTPUT VOLTS

R

R

W B

BW

BW

R

R

R

1O

2O

3O3O

O2

O1

HIGHLOW

EARTH

5300PA

PT

CT

CT

CT

PT

PT

PHASE1

LINE

PHASE2

PHASE

PHASE1

PHASE2

PHASE

LOAD

MAINTAIN POLARITY

THREE PHASE CURRENT

AND POTENTIAL TRANSFORMER

CONNECTIONSR

Voltage and current measurement ranges can be extended by using current and potential transformers. Frequencyresponse of the measurements will be determined by the characteristics of the transformers used. The currenttransformer (CT) and the potential transformer (PT) are shown located near the 5300 PA. The line voltage drop canbe eliminated from the power calculations by connecting the PT at the load.

Also, the general discussion from Figure 1 (surge protection) and Figure 2 (single phase & DC connection) apply.See Section 5, CT/PT Installation for more information.

9

4 - Operation4 - Operation4 - Operation4 - Operation4 - Operation

Read Section 1 and make sure unit is connected properly(see Section 3) before proceeding.

GENERAL1. Using Sections 1 and 3 as a guide, connect the 5300.

Before connecting the power mains, double checkall connections (an Ohmmeter is helpful). Verify that the overcurrent circuit breaker is openand connect the power mains.

2. Observing the 5300 front panel indicators, turn the5300 power switch ON and confirm properoperation - see "Initial Checkout" in Section 1 -Introduction.

3. Energize the power mains and apply power to theload by closing circuit breaker CB. If improperoperation occurs, immediately disconnect powermains. Locate and correct the problem.

The 5300 has:

• Four MODES - HOLD; AVG (averaging), PF(Power factor) and PH. V. (phase voltage)

• Three AMPS ranges plus AUTO (auto ranging)

• Four DISPLAY selections -Ø1, Ø2, Ø3, (phases1 through 3) and ΣKW (sum of kilowatts)

• Three VOLTS ranges plus AUTO.

All have adjacent red LEDs indicating the active modeor measurement range.

AMPERES DISPLAY

The AMPS display is a four digit, unsigned floatingpoint display of true AC rms or DC current flowinginto the AMPS INPUT connector (red) on the rear panel.For detailed information see Section 2, Specifications.

The 5300 defaults to AUTO (auto ranging) at DISPLAYpower turn on. AUTO up-ranging occurs if the rmscurrent exceeds the top of the range value plus about 5%. AUTO down ranging occurs when the current is justless than the full range value of the next lower range.

Selection of any amps range push-button activates theselected range by overriding the AUTO- range selection- the AUTO LED goes off and selected AMPS LEDilluminates. However, the AUTO up-range function is

always silently monitoring the current and is ready toup-range the instrument if the current increases above105% of the range full scale. If the current falls belowthe value of the selected range, that range will thenreactivate. The instrument will automatically up-rangefrom the measured current but will down-range only tothe selected range. The display will show "HELP" whenthe maximum rating is exceeded.

VOLTAGE DISPLAY

The VOLTS display is a four digit, unsigned floatingpoint display of AC rms or DC voltage differencebetween the rear panel HIGH (black) and LOW (white)terminals. The voltage input is differential (neitherterminal tied to common) allowing connection at aremotely located load. This remote connection removesthe voltage drop in the load connection wires from thepower measurement. The VOLTS - LOW terminal(WHITE) must be connected to the AMPS -OUTPUTline at the load - see Figure 1.

The AUTO and manual VOLTS range selection isidentical in operation to the AMPS, as described above.

WATTS OR POWER FACTOR

The WATTS display is five digit, unsigned floatingpoint display of power in WATTS or POWER FACTOR(PF) as a decimal number. WATTS is the power ONdefault MODE. Press the MODE - PF button to measurePOWER FACTOR.

Watts measurements are from about 100 milliwatts (autozero off) through 60 kilowatts, and Power Factors from0.0001 through 0.9999. WATTS = V * I * cos * =TRUE POWER The WATTS range is set by the AMPSand VOLTS active ranges.

Power Factor is:

PFV I

V I =

× × ×

cos θ =

POWER

POWER

TRUE

APPARENT

10

Magtrol Model 5300 Three Phase Power AnalyzerChapter 4 - Operation

MODE SELECTIONS

Figure 7. Mode Selections

HOLD AVG PF PH.V.

MODE HOLD

The HOLD push-button may be depressed at any time.When depressed, the displayed values are held and dataaccumulation stops. If the AVG (averaging) function isactive when the HOLD button is depressed, the lastrunning average value of AMPS, VOLTS and WATTSwill be held. The HOLD and AVG functions can becombined to provide added functions.

MODE AVG

The AVG MODE is an integration or averaging functionfor the display of VOLTS , AMPS and WATTS. The VOLTS,AMPS and WATTS data are sampled at 10 readings persecond and a running average is computed by dividing thesummed values of each parameter by the total number ofsummations. When averaging is turned off, the VOLTS,AMPS and WATTS data, their summations, and the samplecount are stored in non-volatile RAM memory. Theaveraging function is useful in stabilizing the display whendigits are changing because of slowly varying values.Integration periods from seconds to minutes may be neededto stabilize the displayed values.

The HOLD and AVG functions can work together.When entering AVG with HOLD off, the averagingregisters are cleared and integration starts from a zerovalue. With the HOLD function active first, pressingAVG starts the integration point from the last RAMstored values of AMPS, VOLTS or WATTS. TheHOLD automatically resets off.

When AVG is turned off, non-averaged values aredisplayed and the averaged values are then stored innon-volatile RAM memory. Upon re-entering the AVG

mode, the stored values will be returned as the newaveraging starting points. This function allows you toexit the AVG mode, perform some other task, thenreturn and continue averaging where you left off. Also,it can be used simply to retain and recall data.

While in AVG mode and the PA power is turned off,the last averaged values stored will be held in non-volatile RAM and returned to the display when the PApower is turned on and the AVG mode is reactivated.

The HOLD - AVG function permits truly integratedpower measurements where power is appliedintermittently, or where a combination of devices requireintegrated measurements, with interruptions betweenmeasurements.

NOTE: WATT-HOURS can bedetermined by using the AVGfunction and a timing clock.

Watt-hours = (watts avg × timein hours).

NOTE: Power Factor (PF) can not beaveraged.

MODE POWER FACTOR (PF)

Pressing the PF (power factor) push switch displays thepower factor on the WATTS display. Power factor iscomputed by:

PFP P P

V I V I V I =

+ + + +

φ φ φ

φ φ φ φ φ φ

1 2 3

1 1 2 2 3 3

AVG mode is not active while in PF mode

MODE PH. V.

Pressing the PH. V push switch modifies the phaseVOLTS measurement to indicate line to line voltage onthe display by applying:

E E LINE PHASE = × 3 This relation is valid for a balanced system. For anunbalanced system, there can be a difference betweenthe displayed voltage and the true line to line value.

11

Magtrol Model 5300 Three Phase Power Analyzer Chapter 4 - Operation

DISPLAY SELECTIONS

Figure 8. Display Selections

Ø1 Ø2 Ø3 KWΣ

DISPLAY Ø1, Ø2, Ø3

Individually selects Phase 1, Phase 2 or Phase 3WATTS for display.

If all three push-buttons are simultaneously pressed, thefour LEDs illuminate, indicating that the AMPS displayreads the SUM of the three phase currents, the VOLTSreads the AVERAGE of the three phase voltages andthe WATTS reads SUM of the three phase powers, asfollows:

AMPERES I I I= + +φ φ φ1 2 3 (SUM)

VOLTSV V V= + +φ φ φ1 2 3

3(AVERAGE)

KILOWATTSW W W= + +φ φ φ1 2 3

1000(SUM)

DISPLAY ΣΣΣΣΣKW

The WATTS display indicated the total 3-phase powerin kilowatts.

KWW W W

= + + φ φ φ 1 2 3

1000 (SUM)

VOLTAGE RANGES

Figure 9. Voltage Range Selections

150 300 600 AUTO

150, 300 and 600 volts rms plus AUTO range. At powerturn on, the 150 volt range and AUTO (auto-ranging)are active, by default. Up ranging occurs when themeasured voltage on any phase exceeds that rangemaximum voltage by 5% (>105%). This feature is activein either AUTO (LED on) or manual (LED off).Automatic down ranging occurs only in AUTO whenthe measured voltage falls to about 1/4% below thatrange maximum value.

If MODE PH. V. is off, up ranging occurs at 105% ofthe range times 3 .

The PA up-ranging feature protects the instrument fromoverload and ensures accurate measurements.Exceeding the PA maximum voltage of 600 volts causesthe instrument to display "HELP." This means thatyou must reduce your input voltage.

12

Magtrol Model 5300 Three Phase Power AnalyzerChapter 4 - Operation

AMPERES RANGE

Figure 10. Current Range Selections

5 25 100 AUTO

5, 25 and 100 Amperes rms plus AUTO range: At powerturn on, the 5 Amps range and AUTO (auto ranging)are active, by default. Up ranging occurs when themeasured current on any phase exceeds that rangemaximum current by 5% (>105%). This feature is activein either AUTO (LED on) or manual (LED off).Automatic down ranging occurs only in AUTO whenthe measured current falls to about ¼% below thatrange's maximum value.

The PA up-ranging feature protects the instrument fromoverload and ensures accurate measurements.Exceeding the PA maximum current of 100 Amps onany phase causes the instrument to display "HELP."This means that you must reduce your input currentuntil the normal display reappears.

ANALOG OUTPUT OPTION

This option provides analog output signals for AMPS,VOLTS and WATTS.

These three analog outputs with their common areisolated from the measured circuits at 750 Voltscontinuous breakdown.

The outputs are provided through a standard 5 pin DINstyle connector located on the rear panel of the 5300 -see figure 11 for connections. The analog output voltageis 5.00 volts at each AMPS, VOLTS or WATTS rangemaximum value.

See Section 2 - Specifications.

NOTE: Analog output of POWERFACTOR is not provided

Figure 11. Analog Output Connections

N/C 5 1 COM

WATTS 4 2 AMPS3

VOLTS

13

5 - CT/PT Installation5 - CT/PT Installation5 - CT/PT Installation5 - CT/PT Installation5 - CT/PT Installation

External current and potential transformers can be usedto extend the measuring ranges of the PA. See Section4, Figure 6 for a connection diagram.

CALIBRATION

The 5300 has special provisions allowing entry oftransformer ratios into the non-volatile RAM via theGPIB (IEEE-488) rear panel input. The PA displaythen includes the transformer ratios and reads actualcurrent, voltage and power directly.

CT/PT DETECTION

At power turn on initialization, the MPU interrogatesthat portion of memory where the CT and PTcompensation values reside. If a value is found, the MPUlooks to see if the rear panel CT/PT slide switch (seeFigure 12) is set to the "IN" position (to include thetransformer ratios). If it is, normal calibration factorsare revised by applying the transformer factors. Thedisplays indicate actual load values.

Figure 12. Current & Potential Transformer Selections

IN

OUT

GND EXTCT/PT

Since the above interrogation and scale factor setupoccurs only at power turn on, the scale factors are activeuntil power is turned off, the CP/PT switch turned to"OUT" and power turned "ON." The CP/PT factorsare now removed and the standard factory calibrationfactors become active.

CT/PT RATIO RANGE

The 5300 PA compensates all display values fortransformer ratios from 0.01 to 255.

DIGITAL RANGE

The digital display holds four digits for AMPS andVOLTS, and five digits for WATTS or KW. When avalue exceeds these limits, the decimal point is turnedoff. This is a warning that the compensated value isabove the display capability and is in error. If this shouldoccur during GPIB use, an exclamation mark issubstituted immediately to the right of the leastsignificant digit (i.e. !=ASCII033) to signal that thereis an unknown magnitude.

GPIB-CT/PT PROGRAMMING

The 5300 PA accepts either upper or lower casecharacters, and whole numbers in any numerical format.

For CT installation: CTnnncl

For PT installation: PTnnncl

Where: nnn=0.01 to 255.

("cl" denotes a carriage return/line feed terminationcharacter.)

For example:A CT with 250:1 ratio is: CT250.cl

A PT with 10:1 ratio is: PT10.0ct

The PA will ignore any value outside of the range of0.01 to 255. If an out of range entry is attempted, thedisplay will warn by showing "HELP." Correct and re-enter your factor.

14

Magtrol Model 5300 Three Phase Power AnalyzerChapter 5 - CT/PT Installation

CHANGING OR REMOVING CT/PTVALUES

To modify a value, simply overwrite the existingvalue(s).

To remove a CT or PT value, output a CT(cl) or PT(cl),only.

To remove both, and save the data, switch the rear panelslide switch to "OUT," and toggle the power OFF thenON.

If you remove both the CT and PT value correctionfactors by GPIB instructions, the PA will automaticallyreset, eliminating the need to cycle power OFF/ON.

NOTE: When removing transformerconversion factors and measuringwithout CT(s) or PT(s), set therear panel CT/PT switch to the"OUT" position.

15

6 - GPIB Communication6 - GPIB Communication6 - GPIB Communication6 - GPIB Communication6 - GPIB Communication

GPIB (IEEE-488)

The IEEE-488 or GPIB (General Purpose Interface Bus)provides direct connection and control of the 5300 fromany appropriately equipped computer for the purposeof data acquisition and display. MAGTROL factoryassistance is available if required.

HARDWARE INSTALLATION

A GPIB interface requires installation of an interfacecard in the host computer and driver software residenton the PC's hard disk. MAGTROL can supply theNational Instruments Corp. GPIB-PC2A® interface forIBM® or compatible PCs.

SOFTWARE INSTALLATION

Formatting and initialization assistance is available fromMAGTROL Customer Service.

All GPIB data acquisition systems require the use oftermination characters to signal the conclusion of a dataexchange. The 5300 uses the Hewlett Packard - HPIB™standard ASCII termination characters "Carriage Return(CR) and Line Feed (LF)," in that order. On a read cycle,the 5300 looks for the CR-LF to signal completion ofan instruction and transmits these characters uponconclusion of a data write cycle.

PRIMARY ADDRESS

All instruments serviced on the bus have a separateprimary address code. The factory setting for the 5300is fourteen (14). This code can be changed by changingthe settings of the DIP switch that are located on therear panel next to the GPIB connector. Change thisaddress only if there is a bus addressing conflict withother instrumentation. Refer to the table in Figure 13to set the DIP switch pattern - set to address 14.

Some PC interfaces (National GPIB-PC2A) will access0 to 15 (4 bit) primary address numbers only. Otherinterfaces may access up to 31 (5 bit code). The 5300PA code range uses the 5 bit code format. Beforeselecting a value greater than 15, check that yourparticular interface has the 5 bit code capability.

Figure 13. GPIB Address Selection

(Address 14 shown)

SWITCH SEGMENT

1 2 3 4 5LSB MSB

ADDRESS

01010101010101010101010101010101

00110011001100110011001100110011

00001111000011110000111100001111

00000000111111110000000011111111

00000000000000001111111111111111

012345678910111213141516171819202122232425262728293031

1 2 4 8 16

1

0

1 2 3 4 5 6 7 8

Not Used

16

7 - 5300 P7 - 5300 P7 - 5300 P7 - 5300 P7 - 5300 PA Instruction SetA Instruction SetA Instruction SetA Instruction SetA Instruction Set

PC TO 5300 PA

A5, A25, A100 AMPERES RANGE selection.

V150, V300, V600 VOLTAGE RANGE selection.

AA AMPS AUTO range ON.

VA VOLTS AUTO range ON.

FULLSets data FORMAT to AMPS,VOLTS, WATTS for 3 phases.See 5300 PA TO PC.

SGLSets data output format = tofront panel display. See 5300PA to PC.

SYNCGPIB data output rate issynchronized to 0.10 sec. busoutput rate. See DATA RATE.

OPENData OUTPUT is transmittedupon request. See OPENINSTRUCTION.

SP1, SP2, SP3 Selects PHASE 1, 2, or 3.

SPASelects ALL PHASES (sameas pressing Ø1, Ø2 and Ø3simultaneously).

LV Select to read LINE VOLTAGE.

PV Select to read each PHASEVOLTAGE.

KW select to read KILOWATTS

W Select to read PHASE WATTS.

P Select to read POWERFACTOR.

I, IC Averaging ON, Averaging OFF.

H, HC HOLD ON, HOLD OFF.

L, LCLOCKOUT, and LOCKOUTCLEAR of all front panel pushswitches.

AZ Cancel of AUTO ZEROfunction.

CT, PTCANCEL, or ENTER data forcurrent or potential transformercalibration.

RES Soft RESET of PA (same aspower on).

In addition to the standard instructions listed in the tableon the left, there are special instructions for reading andwriting directly to the PA memory elements.

A specific program running in the host computer isnecessary. If you have a special situation where youwant direct memory access to alter 5300 PA functionsor change calibration, please contact Magtrol forsoftware assistance.

5300 PA TO PC

There are two choices for VOLTS, AMPS and WATTSdata format. Before you execute a read statement, it isnecessary to instruct the PA as to which data formatyou wish to receive. This selection is retained by thePA and becomes the default mode used for subsequentdata transmissions.

"SGL" INSTRUCTION

Sets the data format to a string length of 24 ASCIIcharacters, including carriage return and line feedcombination (••).

A=nn.nnV=nnn.nW=nnnn.n••n (as shown) is any integer number 0 through 9

V (as shown) is volts

W (as shown) is watts

P is power factor

K is kilowatts

•• is carriage return and line feed combination

NOTE: Use leading zeros to maintain afixed string length.

"FULL" INSTRUCTION

Data for all 3-phases is supplied. The string is 68contiguous ASCII characters:

A=xx.xxV=xxx.xW=xxxx.xA=yy.yyV=yyy.yW=yyyy.yA=zz.zzV=zzz.zW=zzzz.z••

x is an integer number 0 through 9 for phase 1.

y is an integer number 0 through 9 for phase 2.z is an integer number 0 through 9 for phase 3.

17

Magtrol Model 5300 Three Phase Power Analyzer Chapter 7 - Instruction Set

This string transmits volts, watts and amps. To get linevoltage, power factor (PF) or kilowatts (KW), the hostcomputer must make the following calculations:

PFW W W

E I E I E I =

+ + + +

∅ ∅ ∅

∅ ∅ ∅ ∅ ∅ ∅

1 2 3

1 1 2 2 3 3

E E LINE n PHASE n ( ) ( ) = 3 (Where “n” is the phase number)

KWW W W

= + + φ φ φ 1 2 3

1000

DATA RATE

The OPEN and SYNC commands affect bus timing.Selection is dependent upon what other instruments areon the bus, their acquisition rate, and how you wish toprocess the data.

“OPEN” INSTRUCTION

If your data acquisition is random, or you don't want towait for the full 0.1 second data sampling rate, you canuse the OPEN instruction. Data output is nearlyimmediate, depending upon the MPU status at the timeof request. If multiple data

requests are made within the MPU's 0.1 second samplerate, you will receive multiple transmissions of the samedata. If your program is accumulating data in an array,you will want to include a routine to ignore the secondof any two identical received data words.

INSTRUCTION

The host PC will be held by the 5300 PA until thesampling period is over. In this mode, data will alwaysbe the result of the most recent sampling period.However, if you are using a Magtrol controller like theModel 4629B or 5240, the two instruments should besynchronized to avoid a timing conflict. Thissynchronization is done as follows:

Output any instruction (except "RES") to eachof the instruments without including thecombination carriage return/line feed (oo)terminating instruction. Now, both instrumentsare "hung up" at fixed program locationswaiting for the carriage return/line feedinstruction. Synchronization is accomplished byrestarting both programs by outputting only thecarriage return/line feed instruction (oo) insuccessive statements to both instruments.

At restarting, the instrument will be synchronized, butwill slowly drift apart and require re-synchronization.If you are acquiring data in batches, execute the abovesynchronization routine just prior to each data inputroutine.

PROGRAMMING EXAMPLE

The following program sets the 5300 PA in the "SYNC"mode with "FULL" data format. The CRT monitordisplays:

Amperes - summed for total 3-phase line.

Voltage - average 3-phase line.

Power - 3-phase kilowatts.

This example (on the following page) assumes that theNational GPI-PC interface hardware and MicrosoftQuick Basic are used.

18

Magtrol Model 5300 Three Phase Power AnalyzerChapter 7- Instruction Set

'Read 5300 PA full data - Magtrol Inc., 91 rt'Primary address set to 14

Bdname$ = "DEV14"CALL IBFIND(Bdname$, bd%) 'initialize GPIBcl$ = CHR$(13) + CHR$(10) 'assign carriage return and line feed.CLS

'Set PA for "FULL" datawrt$ = "FULL" + cl$CALL ibwrt(bd%, wrt$)

'Set PA for "SYNC" transfer timing.wrt$ = "SYNC" + cl$CALL ibdwrt(bd%, wrt$)

'Assign input word length.rd$ = SPACE$(68)

LOCATE 20,50: PRINT "Any key ends..."

DO: s$ = UCASE$(INKEY$) 'Loop starts here.CALL IBRD(bd%, rd$)

'Amps - convert from string to numeric and sum.ap1$ = MID$(rd$, 3, 5) 'Extract Phase 1 amps.ap2$ = MID$(rd$, 25, 5) 'phase 2.ap3$ = MID$(rd$, 47, 5) 'phase 3.amps = VAL(ap1$) + VAL(ap2$) + VAL(ap3$)

'Volts, conv' numeric, average, and conv' from phase to line voltage.vp1$ = MID$(rd$, 10, 5) 'extract phase 1 volts.vp2$ = MID$(rd$, 32, 5) 'phase 2.vp2$ = MID$(rd$, 54, 5) 'phase 3.volts = (VAL(vp1$) + VAL(vp2$) + VAL(vp3$) * .57735 ' = |3/3

'Power, convert to numeric, sum and convert to KW.wp1$ = MID$(rd$, 17, 6) 'extract phase 1 watts.wp2$ = MID$(rd$, 39, 6) 'phase 2 watts.wp3$ = MID$(rd$, 61, 6) 'phase 3 watts.Kw = (VAL(wp1$) + VAL(wp2$) + VAL(wp3$)) / 1000

LOCATE 12, 10: PRINT "Line Volts = ";PRINT USING "###.#"; voltsLOCATE 13, 10: PRINT "Amperes = ";PRINT USING "###.#"; ampsLOCATE 14,10: PRINT "3-phase KW = "; Kw

LOOP WHILE s$ = ""

END

19

8 - Operating P8 - Operating P8 - Operating P8 - Operating P8 - Operating Principlesrinciplesrinciplesrinciplesrinciples

The Magtrol 5300 PA uses the three wattmeter methodto measure true RMS power. Voltage and current aresensed and amplified in an isolated analog front end,analog to digital converted with 16 bit precision,processed through an 8 bit microprocessor (MPU) andoutput in BCD form for display on the front panelmeters. The PA provides a digital display for eachselected phase of rms volts, amps, and watts; averagerms volts, amps and watts; and total load power factor(PF).

AMPERES TRANSDUCING

Current measuring is accomplished using a three sectioncalibrated manganin resistance shunt per phase. The 5,25 and 100 amp sections are 0.016 Ohm (80 mV), 0.003Ohm (75 mV) and 0.001 Ohm (100 mV), respectively.See Figure 14.

The current flow through each shunt is determined bymeasuring the voltage drop across the shunt and theMPU, applying Ohm's Law. Current ranges are set bythe MPU and energize the appropriate shunt bypassrelays CR1 and CR2. The 5 amp range energizes (opensN/C contacts) of both CR1 and CR2; the 25 Amp. rangeenergizes CR1, and both relays remain de-energized forthe 100 Amp range. The CRs are very low resistance,high current mercury wetted relay contacts that bypassunused sections of the metering shunts.

VOLTAGE SENSING

Each VOLTS input terminal connects a 1.5 Megohmresistive voltage divider to provide scaled phase voltagefor measurements. The three 1.5 Megohm resistors forma classic "Y Box" neutral. The resulting phase voltagesignals are amplified and scaled for processing. SeeFigure 14.

NOTE: Connecting the Voltage Senseleads incorrectly (e.g. connectingthe voltage sense from phase 1 tophase 2 current lines) will causethe Watts display to show anincorrect value. If you areexperiencing poor readings, shutdown the system and carefullyreview your connections.

ANALOG PROCESSING

Input signals proportional to AMPS and VOLTS areamplified and calibrated for each range by amplifiers78B146-U7, U8, U9 and U10. These scaled signals passthrough true rms to DC converters 78B147-U1 & U4,voltage to frequency converters 78B147-U2 & U5 andoptical isolators 78B147-U3 & U6. The resultingfrequency signals represent true rms current and voltage(AF0 and VF0,) scaled to 0.0707 volts per 1.0 kilohertz.

5A25A100A

CR2CR1

CR2CR1

CR2CR1

01

02

03

INPUT

OUTPUT

01

02

03

OUTPUT

(LOAD)

(LOAD)

(LOAD)

VOLTS

VOLTS

VOLTS

01

02

03

(LOW)

(LOW)

(LOW)

VOLTS(HIGH)

E PH1

E PH2

E PH3

VOLTS(HIGH)

VOLTS(HIGH)

S

S

S

Figure 14. 5300 Current Shunt Inputs

20

Magtrol Model 5300 Three Phase Power AnalyzerChapter 8 - Operating Principles

Vrms= dtT 0

t1 V 2

Vo= 10XYCosQ

Vrms= dtt

1T 0

V 2

Vrms=t

dtT1

0V 2

V/F CONV.

KhzVOLT

.0707

U8

V/F CONV.

VOLT.0707 Khz

.0707

V/F CONV.

KhzVOLT ISO

OPTOVFo

ISOOPTO

WFo

ISOOPTO

AFo

I AMP5

I AMP25

I AMP100

AMPV

5A

25A

100A

V

OUTPUTSTO

MPU

ISOLATED CIRCUIT

AMPSINPUT(FROM

SHUNTS)

VOLTS INPUT(FROM

VOLTAGE DIVIDER)

78B146-U7

78B146-U8

78B146-U9

78B146-U10

78B147-U1 78B147-U2

78B147-U7 78B147-U9 78B147-U10

78B147-U4 78B147-U5

78B147-U3

78B147-U11

78B147-U6

RANGE

Y

X

(t)

(t)

(t)

Figure 15. 5300 Block Diagram

Also, the AMPS and VOLTS signals are input to aprecision four quadrant X-Y multiplier 78B147-U7,averaged by an active two pole Butterworth filter78B147-U8, converted to frequency in voltage tofrequency converter 78B147-U10 and isolated by opticalcoupler 78B147-U11. The resulting frequency signal,WF0 represents true power (V × I × Cos θ ), at a scalefactor of. 0.0707 volts per 1.0 kilohertz. There is 2500volts isolation between the measured circuit and the AF0,VF0 and WF0 frequency signals.

DIGITAL PROCESSING

Frequency proportional signals of AMPS, VOLTS andWATTS (AF0, VF0, and WF0) are integrated for a preciseperiod of 0.1 seconds for digital conversion andprocessing via an eight bit microcomputer (MPU). TheMPU controls functions of range control, auto-zero, finecalibration, BCD conversion and GPIB communications.

The MPU acquisition and conversion rate is 100 milliseconds(10 readings per second) and the display updates at 500milliseconds (2 updates per second). The MPU scans allfront panel push-button control inputs 25 times per second.When a push-button is pressed, the appropriate programloop is entered and the function is executed on the nextprogram cycle. No damage will result to the 5300 PA fromany combination of push-button selections.

In the AVG MODE (averaging), the 5300 PA integratesthe 10 data readings per second (AMPS, VOLTS andWATTS) and then samples the averaged value for

display. As the sampled readings accumulate, thechanging display digits will steady down to provide astable measurement of true power (computed fromaverage VOLTS and AMPS). This technique works wellwhen the displayed digits are changing too fast to berecognized as the power consumption changes.

DISPLAY “HELP”

If the AMPS or VOLTS displays show the word HELP,the maximum peak range of the 5300 PA has beenexceeded. This can occur from a high rms input or thepeak of a high crest factor wave form. "HELP" can bea transient condition resulting from high momentarystarting current and is of no danger if the "HELP"message disappears after a few seconds. The Auto up-ranging feature of the 5300 will automatically up rangethe instrument as the current or voltage increases overeach ranges maximum, up to the 100 amps range. The5300 can sustain an overload of up to 200 amps for 5seconds, maximum. Circuit breaker(s) should beinstalled for personal safety and protection of the 5300PA. See "Current Overload." in Section 1 - Introduction.

POLYPHASE LINE BALANCE

Good polyphase line operating efficiency dictates thatline voltages and currents be closely balanced. Usually,this requires putting some effort into balancing the loads.Also, power factor (PF) measurements will be inaccurateunless a good line balance is maintained.

21

9 - Calibration9 - Calibration9 - Calibration9 - Calibration9 - Calibration

GENERAL

Complete calibration of the 5300 PA is beyond thecapabilities of most users. Magtrol, Inc. recommendsthat the 5300 PA be returned to the factory for calibrationcertifying the instrument to full specifications.

However, this section includes Calibration AccuracyVerification procedures and steps to make minor trim-ups of calibration.

NOTE: To perform these steps, thefactory calibration seal will bebroken. This voids the factoryCalibration Certification thatcomes with the 5300 PA.

TEST SETUP

The recommended test setup for each phase is shown inFigure 16.

NOTE: The same test setup is repeatedfor each of the 3-phases.

The accuracy of the voltage and current standards usedfor calibration should be at least four times the accuracyof the 5300 PA specifications. The equipment shownin this test setup meets this requirement.

To accurately measure AC power it is important thatthe current source have a phase shifting control. Withsuch a phase adjustment, phase shift caused by incidentalcircuit inductances can be compensated for by adjustingthe phase of the current wave form to be exactly in phase(zero phase shift) with the voltage wave form. Sourcesof incidental circuit inductance include the current shuntswithin the 5300, output impedance of the calibrators,impedance of the load and wiring inductance.

OPTIONAL-FOR AMPS >2TRANSCONDUCTANCE AMP.

FLUKE 5725A;5205AGUIDELINE 7620A, OR

EQUIVALENT

GND

INPUT

AMPS

5300

OUTPUT

LOW

VOLTS

HIGH

EARTH

VOLTAGE CALIBRATOR

FLUKE 5700A ORFLUKE 5100A OR

EQUIVALENT

VOLTAGE CALIBRATOR

FLUKE 5700A OREQUIVALENT

VOLTS VOLTS, HIGH LOW

VARIABLEPHASEOUTPUT

PHASELOCK

IN

LOW CURRENTHIGH

UUT

(REF)

(EACH PHASE)

Figure 16. Calibration Verification Test Setup

(For Each Phase)

22

Magtrol Model 5300 Three Phase Power AnalyzerChapter 9 - Calibration

Since the current calibrator output is usually a lowimpedance with low compliance voltage, the 5300'scurrent measuring shunts are the circuit's majorresistance. Let's take a representative example andcompute the resulting phase shift:

Let L = 10 µhenries (total of shunt, wiring, etc.)

Let RSHUNT = 0.011 Ohm; RWIRING = 0.01 Ohm

R = 0.011 + 0.01 = 0.021 Ohms

Let F = 60 Hz ∴ 2 π FL ≈ 0.004

θ Arctan (2 π FL /R) = Arctan (0.004 /0.021)

θ ≈ 11 degrees, or about 1.8 % measurement error. Thiserror can be eliminated by adjusting the calibrator'svariable phase shift control. This demonstrates the needfor care in making power analyzer calibrationmeasurements.

CALIBRATION VERIFICATION

Refer to Figure 16 for the recommended test setup. Ifother test equipment is used, appropriately modify thetest steps for your equipment. Each of the 3-phases(φ1, φ2, φ3) are identical and are individually tested.The same procedure is used for each of the 3-phases.

Potentially lethal voltages are used inthe following test steps. Takeappropriate precautions to avoidelectrical shock. Refer to your calibratoroperator manual for operatinginstructions. Because these calibratorsgenerate lethal voltages, extreme care isnecessary.

The three steps of the calibration verification are asfollows:

1. Volts Calibration Check

2. Amperes Calibration Check

3. Watts Calibration

Set both the VOLTS and AMPERES calibrators tostandby mode.

VOLTS CALIBRATION CHECK φφφφφ1

DC:

1. On the 5300 PA, press the 150 volts range push-button.

2. Set the volts calibrator for zero volts DC and operatemode.

3. The 5300 VOLTS display should read zero +0.0001% max of volts full scale range.

4. Set volts calibrator for + 150 volts DC.

5. The 5300 VOLTS display should read 150.0 volts.Record the VOLTS readings.

6. Set the calibrator for - 150 volts DC and repeat theabove step. Record the VOLTS readings.

7. Repeat the above for the 300 and 600 volts ranges.

Lethal voltages are present. Takeappropriate safety precautions.

8. Compare the above readings to the values given inSection 2, Specifications.

The (+) and (-) readings should be within ± 2 leastsignificant digit (LSD) of each other.

AC:

1. Set the volts calibrator for 60 Hz and repeat thevolts checks as outlined in the DC test above.

NOTE: If a beat frequency effect isexperienced between thecalibrator output and the 60 Hzpower line frequency, try settingthe calibrator for 80 Hz instead of60 Hz.

2. Set the volts calibrator to standby mode.

23

Magtrol Model 5300 Three Phase Power Analyzer Chapter 9 - Calibration

AMPERES CALIBRATION CHECK

DC:

1. On the 5300, press the 5 AMPERES range push-button.

2. Set the current calibrator for zero amperes andoperate mode. The AMPERES display should readzero + 0.0001% max of range full scale.

3. Set the current calibrator for + 5 Amperes DC. TheAMPERES display should read 5.000 Amps.

Record the current readings.

4. Set the current calibrator for - 5 Amperes. TheAMPERES display should read 5.000.

5. Repeat the above for the 25 and 100 Amp ranges.

6. Compare the above readings to the values givenin Section 2 - Specifications.

The (+) and (-) readings should be within ± 2 leastsignificant digit (LSD) of each other.

AC:

1. Set the current calibrator for 60 Hz. and repeat thecurrent checks outlined above.

NOTE: If a beat frequency effect isexperienced between thecalibrator output and the 60 Hzpower line frequency, try settingthe calibrator for 80 Hz instead of60 Hz.

2. Set the current calibrator to standby mode.

WATTS CALIBRATION CHECK

This step calls for the simultaneous application ofvoltage and current to the 5300 PA.

DC:

1. On the 5300, select a VOLTS and AMPERESrange.

2. Set the volts and current calibrators for a voltageand current near the center of each selected range.

Switch the calibrators to OPERATE mode.

3. The WATTS readout should show a power that isthe product of the VOLTS and AMPS indications

( POWER = V × I ).

4. Compare the 5300 PA WATTS readout to theproduct of VOLTS and AMPS from the calibrator'soutput.

This difference is the WATTS error.

AC:

POWER = V × I × Cos θ

where = phase angle between volts and amps.

NOTE: Maximum true power isdelivered only when θ = zerodegrees (cos θ = 1). Therefore,the volts calibrator variable phaseadjustment is set for zero phasebetween the volts and amps at theinput to the 5300 PA. Refer tothe calibrator instruction manualsfor this adjustment procedure.

The phase shift control should be carefully set to providea peak 5300 PA WATTS indication, corresponding tozero volts to amps phase angle. Repeat the procedureas used for the DC power verification and recordreadings.

Compare the recorded reading to the values given inSection 2 - Specifications.

MINOR ADJUSTMENT (IF NEEDED)

NOTE: All trim pot adjustments arelocated on the 78B146 and78B147 circuit boards of the5300. See Figure 17 for trimpotadjustment locations.

Lethal voltages are present. Takeappropriate safety precautions.

24

Magtrol Model 5300 Three Phase Power AnalyzerChapter 9 - Calibration

VOLTS ZERO

1. Disable the auto zero function, refer to SpecialFunctions in Section 5.

2. Go to the 5300 VOLTS range that needs zeroadjustment.

3. Set the volts calibrator for zero volt DC output.

4. Adjust trim pot 78B146-R21 for zero (+ 0.0001%max) VOLTS display reading.

This sets all voltage ranges - all ranges should bezero + 0.0001% of range full scale.

AMPERES ZERO

1. Disable the auto zero function. See Section 5, CT/PT Installation.

2. Go to the 5300 AMPERES range(s) that needadjustment.

3. Set the current calibrator for zero amp DC output.

4. For the 5 amp range, adjust trim pot 78B146-R5,25 amp range adjust trimpot 78B146-R10, and the100 amp range adjust trimpot 78B146-R15 for zeroAMPERES display indication.

VOLTS SCALE FACTOR

1. Go to the 5300 VOLTS range(s) that needadjustment.

2. Set the volts calibrator for an output equal to therange maximum voltage.

3. Adjust the trim pot(s) so the VOLTS display readsthe full scale voltage as shown below:

For the 150 volt range, adjust 78B146-R27.

For the 300 volt range, adjust 78B146-R25.

For the 600 volt range, adjust 78B146-R23.

AMPERES SCALE FACTOR

1. Go to the AMPERES range(s) that need adjustment.

2. Set the current calibrator DC output to the rangemaximum current and adjust trim pot(s) so theAMPERES display reads the full scale current:

For the 5 Amp. range, adjust 78B146-R3.

For the 25 Amp. range, adjust 78B146-R8.

For the 100 amp range, adjust 78B146-R13.

Figure 17. Trimpot Adjustment Locations

Ø -R23Ø -R25Ø -R27Ø -R21

Ø -R13

Ø -R15

Ø -R8

Ø -R10

Ø -R3

Ø -R5

Ø -R23Ø -R25Ø -R27Ø -R21

Ø -R13

Ø -R15

Ø -R8

Ø -R10

Ø -R3

Ø -R5

Ø -R23Ø -R25Ø -R27Ø -R21

Ø -R13

Ø -R15

Ø -R8

Ø -R10

Ø -R3

Ø -R5

Ø -R29Ø -R26

Ø -R24Ø -R21

Ø -R18

Ø -R13

Ø -R10

Ø -R5

Ø -R2

Ø -R29Ø -R26

Ø -R24Ø -R21

Ø -R18

Ø -R13

Ø -R10

Ø -R5

Ø -R2

Ø -R29Ø -R26

Ø -R24Ø -R21

Ø -R18

Ø -R13

Ø -R10

Ø -R5

Ø -R2

78B146 78B147 78B146 78B147 78B146 78B147

Ø3 Ø2 Ø1

25

Magtrol Model 5300 Three Phase Power Analyzer Chapter 9 - Calibration

NOTE: Calibration on the 25 and 100Amps ranges may have to bedone at less than full range scale,depending on your calibrationequipment.

VOLTS BALANCE

1. Go to the 5300 PA 150 VOLTS range.

2. Set the voltage calibrator for + 150 volts DC output.Note the VOLTS display reading.

3. Reverse the calibrator polarity to -150 volts DC. Ifthe plus to minus display readings differ by morethan ± 2 LSD, connect a digital voltmeter atamplifier 78B147-U4 pin 14 and adjust trim pot78B147-R10 for zero ± 0.1 millivolt dc.

CURRENT BALANCE

1. Go to the 5300 PA 5 amp. range

2. Set the current calibrator for + 5 Amps DC output.

3. Note the AMPERES display reading. Reverse thecalibrator polarity to - 5 Amps DC. If the plus andminus display readings differ by more than ± 2 LSD,connect digital voltmeter at amplifier 78B147-U1pin 14 and adjust trim-pot 78B147-R2 for zero ±0.1 millivolt DC.

WATTS SCALE FACTOR

1. Set the volts and current calibrators for 150 VDCand 5 Amp DC output.

2. Adjust trim pot 78B147-R18 for 750.00 WATTSdisplay reading.

3. Confirm AC measurement accuracy by setting thecalibrators for 150 VRMS and 5 Amps RMS at 60Hz. The WATTS display should read close to750.00 watts and be within the specificationaccuracy. See Section 2 - Specifications.

NOTE: Adjust current calibrator's phaseshift control for zero phase anglebetween volts and amps (peak thewatts indication) - see"Calibration Verification--AC,"Step 3.

26

Appendix AAppendix AAppendix AAppendix AAppendix A: Schematic Drawings: Schematic Drawings: Schematic Drawings: Schematic Drawings: Schematic Drawings

CIRCUIT BOARD 78B128 - LED DISPLAY

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27

Magtrol Model 5300 Three Phase Power Analyzer Appendix A: Schematic Drawings

CIRCUIT BOARD 78B145 - DIGITAL READOUT & MPU

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28

Magtrol Model 5300 Three Phase Power AnalyzerAppendix A: Schematic Drawings

CIRCUIT BOARD 78B146 - ANALOG INPUT BOARD

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25A SELECT

5A SELECT

AMPS

A5 COM

A25 COM

+

+

+

+15V

+5V

SIGNAL COM

POWER COM

-15V

150V SELECT

300V SELECT

100A SELECT

600V SELECT

CHASSIS COM

AC LINE

FOR 120 VOLT OPERATION JUMP J1 AND J3

FOR 240 VOLT OPERATION JUMP J2 ONLY

3

AC LINE

600V

4

1 7

9

+

+

126

10

300V

150V

29

Magtrol Model 5300 Three Phase Power Analyzer Appendix A: Schematic Drawings

CIRCUIT BOARD 78B147 - CONVERTER BOARD

R24

20K

+15V C

13

.001

U5

Vo

+V12

+IN

14 132 3 41

-IN

9 8

CO

MC

OM

P

11 106 7

Fo

VF

C32

0CG

5-V C

+15V

U6

7 682 31

54

6N13

7

-15V

R15

1.5K

R22

34.8

K

U9

Vo

+V12

+IN

14 132 3 41

-IN

9 8

CO

MC

OM

P

11 106 7

Fo

VF

C32

0CG

5-V C

R23

10M

-15V

R21 20

K

C12

.1

R29

20K

R28

10M

C15

.001

P1

48

+15V

-15V

R16

470

C10

.1

U10

Vo

+V12

+IN

13142 3 41

-IN

9 811C

OM

CO

MP

106 7

Fo

VF

C32

0CG

5-V C

+15V

R27

32.4

K

R26

20K

+15V

U2

Vo

+V12

+IN

14 132 3 41

-IN

9 8

CO

MC

OM

P

11 106 7

Fo

VF

C32

0CG

5-V C

R7

1.5K

C3

.001

C4

330p

f

R5

20K

+15V

-15V

-15V

C8

.001

-15V

C9

330p

f+15V

R12

10M

C5

.1R

847

0P

146

5V+1

5VU

3

7 682 31

54

6N13

7

+15V C27

.01

5V

C29

.01

+15V

C6

2.7

U4

Vin

12 11

BFo

14 132 3

CO

M41

BFi

Cav

RM

So810

+V -V9

7D

EN

i

AD

637K

Q

dBo

5 6

OFF

SC

S

R9

24.3

KP

1 35P1 37

U7 O

UT

12 11

+V1314

3X

221

X1

-V

AD

534L

D

8

Z1

Z2

10 96 7

Y1

Y2

SF

4 5

-15V

R10

50K

+15V

R47 75

0K

R11

34.8

K+1

5V

R13

20K

-15V

-15V

R20

301K

C42

.1

C28 .0

1C

7

2.2 +1

5V

C41

.1

C1

2.7

P1 23 P1 25P1 29

R46 75

0K

P1 27

R2

50K

-15V

+15V

R3

34.8

K+1

5V

R4

10M

-15V

U1

Vin

12 11

BF

o14 13

2 3C

OM

41B

Fi

Cav

RM

So810

+V -V9

7D

ENi

AD

637K

Q

dBo

5 6

OF

FS

CS

R1

24.3

K

C39

.1

C26 .0

1C

40.1

C2

2.2

C22

.1U

14

4521

64N

36

C19

.1R

391.

5KR

401.

2K

+15V

5V

R45

1.2K

U15

4521

64N

36C

25.1

5V

R44

1.5K

C24

.1

+15V

U11

7 682 31

54

6N13

7R

3147

0P

1 44P1 50

CR

2

1N41

48

CR

1

1N41

48

C38 1

P1 47P1 45 P1 49

5V

-15V

C31

.01

R19

100K

R18

20K

U8

6

15

-2

7LF35

1+

4

3C

1433

0pf

C16

330p

f

C32 .0

1

+15V

-15V

C11

.47

C30 .0

1+5

V5V

C33

.01

+15V

-15V

C17

.1R

3247

0R

2582

0R

3082

0

R42 10

.0K

+15V

R41 10

.0K

P1 19

-15V

P1 17

C37

1

+5V C35

1C

36 1P

1 18 P1 16P1 15

R43 24

9KU

16 -+

+V8 7

21G

ND

LM31

1N

5B

AL

ST

R6

-V43

U13 -+

+V8 7

21G

ND

LM31

1N

5B

AL

ST

R6

-V43

-15V

C21

.1 C23

.1 C34

.1-1

5V

U12

6

7-

2

OP

74

3+

R34

17.8

K

R33 1.69

K

R35 10

.0K

+15V

C18

.1-1

5VC

R3

1N82

1

+15V

-15V

R38 24

9KR17

200K

C20

.1

R36 10

.0K

R37 10

.0K

VO

LTS

OU

T

AM

PS

OU

T

+

VO

LTS

CO

M

VO

LTS

+

+

A5

CO

M

AM

PS

A10

0 C

OM

A25

CO

M

+

VO

LTS

OL

WA

TT

S O

UT

CH

AS

SIS

CO

M

AM

PS

OL

+5V

+

-15V

+15V

+

++

PO

WE

R C

OM

SIG

NA

L C

OM

+5V

30

Magtrol Model 5300 Three Phase Power AnalyzerAppendix A: Schematic Drawings

CIRCUIT BOARD 78B149 - SWITCHBOARD

C1

R3200

R4200

R1200

R2200

J4

SW3FRONT VIEW

SW4

RIGHT

SW1

LEFT

SW2

31

Magtrol Model 5300 Three Phase Power Analyzer Appendix A: Schematic Drawings

CIRCUIT BOARD 78B153 - SWITCH INTERFACE

CD4518

EN10

Q314

RST

CD4518

EN2

6RST

Q3

7

CD4518CK

1

Q3

ENRST

72

CD4518

EN2

Q36

RST7

CD451811

Q0

RSTEN

1510

CD4518

EN10

Q314

RST

15

15

11255

01

01000

Unless otherwise noted

Note: All capacitors in uFAll resistors in OHMS

3,4,6U +5 COM

20 1,10

1,8,98,9

11,20 10

10 16

5,7168,9

3D4

2

2D3

J4 FunctionØVPF

65D6D

7

5

Ø2Ø1 SwitchJ4 Phase

PA4PA3

1817

2QPA1PA2

1D 1QPA019

PA1

U9aPA0

PA2

15

6Q5Q

PA4PA514

3Q4Q4D

PA316

R15

25

R2

J1

600CT

150300

74HC573PA6PA5

FCT

PA7Hold SwitchAVG

100

+5

+5

COM

1

E

U10b

6U10a

RNG

CTDAVRES

LL1RL

LL2

3

74HC5731D

11LE U38D

PA0 2PA1

.001

PA0

5

7

4D6

5D

42D

3Q3D

PA5PA4PA5PA4

PA1PA2PA2PA3PA3

ØV

H LED

181Q

19

AVGPF

Ø1 LEDØ2

4Q5Q6Q

1514

2Q

1617

53Q3D

4D

34

74HC573

2D1D

PA3PA2PA2PA3

PA0PA1

2PA1PA0

97D

8Q7Q

67

5D6Q6D

PA6PA7

8PA6PA7

PA4PA4PA5PA5

J5

2Q

1617

1918

1Q

1312

4Q15

5Q14

COM12kx8U2

Range R1 R2

136Q7Q

PA6 U8a1415 PA4

PA58

6D7D

4D67

4Q5Q5D

OC

U8b.001

128Q

U7

PA798D

1

U1 12kx8

Auto Switch

COMU9b.001

12 PA7PA6

1

74HC573

8DU5OC

7D89

13

8Q7Q

16PA2PA3

19 PA0PA1

43D

5

2Q17

3Q

1D23

1Q18

2D

86Q

136D

4D5Q5D

1514PA5

PA6PA6

PA4PA4 67PA5

8DLE

8QU6

7D12

7Q

.001

PA7PA7 911

150

A LED

150

A Sw

J4 Volts

600300

A LED

COM

300600

118D

U4LE

7D8

7Q6D

8Q.001

9PA6PA6PA7PA7

43Q3D

5

274HC573

2D1D

PA3PA2PA2PA3

PA0PA1PA0

3PA1

J4 Amps

3ØKWØ3

12 3ØKW13 Ø3

25 25100

5 5

1716

4Q100

1Q18

2Q

19

32

Magtrol Model 5300 Three Phase Power AnalyzerAppendix A: Schematic Drawings

CIRCUIT BOARD 78B154 - COUNTERS BOARD

U31

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

U32

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U26OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U25OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

U30

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U24OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U38OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U37OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U36OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

U33

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U27OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U39OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U14OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U13OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

U7

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q314

Q2

1211

13RST

15EN Q1

109

Q0CK

U8

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U12OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

U6

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q314

Q2

1211

13RST

15EN Q1

109

Q0CK

U20

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

U19

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

U18

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U15OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

U9

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

U21

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

U28

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q314

Q2

1211

13RST

15EN Q1

109

Q0CK

U2

345

56

74HC154

21

43

21

18

C20

G1

D

2322

10

2BA

1514

1617

131110

14

11

15

89

1312

10

19G2

76

97 8

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U22OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

10111213

4365

21

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U34OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

U29

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U23OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U35OC

128Q

5D6Q5Q

1413

118D

9

LE1

6D7

7D8

3Q4Q

1615

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U10OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

U4

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q314

Q2

1211

13RST

15EN Q1

109

Q0CK

U16

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

U3

345

56

74HC154

21

43

21

18

C20

G1

D

2322

10

2BA

1514

1617

131110

14

11

15

89

1312

10

19 G276

97 8

3Q4Q 16

15

1974HC573

1Q1817

6

3D4

4D5

23

1D2Q2D

7Q

U11OC

128Q

5D6Q5Q

1413

118D9

LE1

6D7

7D8

U5

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q314

Q2

1211

13RST

15EN Q1

109

Q0CK

U17

Q3Q2

6

43

527

EN Q1RST

14520

Q0CK

Q3 14Q2

1211

13RST15EN Q110

9 Q0CK

PA7

PA0PA1

PA2PA3

PA5PA6

PA4

PA7PA6

PA1PA0

PA3PA2

PA5PA4

PA7

PA2PA1PA0

PA3PA2

PA5PA6

PA4

VOLTSPA0PA1

PA4PA3

PA5

PA7PA6

CD4520EN1

X

PA0PA1

CL

0

1X

PA7

PA1PA0

PA3PA4

PA2

PA6PA5

X QoX Z

D74HC573LE Q

H HL L

XX LL

XH

Qx

INCX

INCHL

OC

HL

PA7PA6PA5

AMPSPA1PA0

PA2PA1PA0

PA3PA4

PA1PA2

PA7PA6

PA0

PA7

PA1PA0

PA4PA3

PA6PA5

A3Fin

W3FinV3Fin

A3OLV3OL

1+5

A1OL

W1Fin

A2OLV2OL

V1FinA1Fin

V1OL

PA1

PA4PA3PA2

PA5

W2Fin

J6

PA0

A2FinV2Fin

PA2

PA4PA3

PA1

PA5

PA0

PA7PA6

PA7

U1 74HC04

LL2LL1RL

+51

PB7PB6

PB4PB5

PA7

J1

DAV

FCTRNG

RES

PA2PA3

PA0PA1

PB3

PA4

PB2

PB0PB1

PA7

PA5PA6

PA7

PA0

PA3PA2PA1

PA4PA3PA2

PA5PA6

PA3PA2PA1

PA6PA5PA4

PA6PA5PA4

PA7

PA0

PA2PA3

PA7

PA5PA4

PA4PA3PA2

PA5PA6

PA1PA0

PA3PA4

PA2

PA5PA6

WATTS

PA7PA6

PA0PA1

127,9

10

8

Note: All capacitors in uF

Unless otherwise notedAll resistors in ohms

COM

22,23,2413,14,15

37,38,3934,35,3625,26,27

32,3330,31

2010,11,12

8,9,16,174,5,6,7

2,3

21,28,2918,19,20

+51U

2416

14

PA7PA6

PA3PA2

PA5PA4

PA0

PA2PA1

PA3PA4

PA2

PA7PA6PA5

PA7

PA1PA0

PA4PA3

PA6PA5

33

Magtrol Model 5300 Three Phase Power Analyzer Appendix A: Schematic Drawings

CIRCUIT BOARD 78B175

BR1

PD05

T1

14A-20-10

94

6 7

12

10

1

3C4.1uF

C31uF

C14700uF

C21uF

OI

+5V7805

Line

120

Com

C

Neu

(Heatsinkto chassis)

25V120

240

Magtrol, Inc. warrants its products to be free from defects in material and workmanship under normal use andservice for a period of one (1) year from the date of shipment. Software is warranted to operate in accordance withits programmed instructions on appropriate Magtrol instruments. This warranty extends only to the original purchaserand shall not apply to fuses, computer media, or any other product which, in Magtrol’s sole opinion, has beensubject to misuse, alteration, abuse or abnormal conditions of operation or shipping.

Magtrol’s obligation under this warranty is limited to repair or replacement of a product which is returned to thefactory within the warranty period and is determined, upon examination by Magtrol, to be defective. If Magtroldetermines that the defect or malfunction has been caused by misuse, alteration, abuse or abnormal conditions ofoperation or shipping, Magtrol will repair the product and bill the purchaser for the reasonable cost of repair. If theproduct is not covered by this warranty, Magtrol will, if requested by purchaser, submit an estimate of the repaircosts before work is started.

To obtain repair service under this warranty, purchaser must forward the product (transportation prepaid) and adescription of the malfunction to the factory. The instrument shall be repaired at the factory and returned to purchaser,transportation prepaid. MAGTROL ASSUMES NO RISK FOR IN-TRANSIT DAMAGE.

THE FOREGOING WARRANTY IS PURCHASER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OFALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIEDWARRANTY OF MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE OR USE.MAGTROL SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIALDAMAGES OR LOSS WHETHER IN CONTRACT, TORT, OR OTHERWISE.

CLAIMSImmediately upon arrival, purchaser shall check the packing container against the enclosed packing list and shall,within thirty (30) days of arrival, give Magtrol notice of shortages or any nonconformity with the terms of the order.If purchaser fails to give notice, the delivery shall be deemed to conform with the terms of the order.

The purchaser assumes all risk of loss or damage to products upon delivery by Magtrol to the carrier. If a product isdamaged in transit, PURCHASER MUST FILE ALL CLAIMS FOR DAMAGE WITH THE CARRIER to obtaincompensation. Upon request by purchaser, Magtrol will submit an estimate of the cost to repair shipment damage.

Magtrol Limited WMagtrol Limited WMagtrol Limited WMagtrol Limited WMagtrol Limited Warrantyarrantyarrantyarrantyarranty