ups sizing rev 1.3 1 show information... navigation links: move the cursor across the links and wait...
TRANSCRIPT
UPS sizing rev 1.3
1
Show information...Show information...
•Navigation links: Move the cursor across the links and wait for the “hand” symbol
•- then click left mouse key.
•Click the APC logo link to jump back to the previous showed slide.
•Click the left margin area to jump to the index (“List of contents”)
•From the index -links, you may jump to any other subjects.
• - use the APC-return logo to return to the index slide again .
UPS sizing rev 1.3
2
UPSUPSSizingSizing
UPS sizing rev 1.3
3
List of contentsList of contents
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
UPS sizing rev 1.3
4
AC Load SpecificationAC Load Specification
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
AC load spec.
UPS sizing rev 1.3
5
The complete AC load specification includes:
AC Load SpecificationAC Load Specification
UPS load specifications
Example
kVA….……17
kW……..…...
Iload……………
PF…….….0,8
CF……..…3,5
kVA : Apparent power load (S) - kVA
kW : True power load (P) - kW
Iload : Phase current, IL1, IL2, IL3 - on load
PF : Power factor
CF : Crest factor
AC load spec.
UPS sizing rev 1.3
6
DP300E output specificationDP300E output specificationProduct range...Product range...
UPS load specifications:
VA……………. ?
W……………... ?
Iload………...… ?
PF……………. ?
CF……………. ?
DP300E output specifications:
kVA……...10 - 480
kW…..…..10 - 480
Iout…...14,5 - 693A
Pfinductive load…...0,8
Pfcapacitive load…..0,9
PFSMPS..…0,6 - 1,0
CF……Unlimited
DP310E - DP3480E UPS load ?
AC load spec.
UPS sizing rev 1.3
7
Load power - kVA and kWLoad power - kVA and kW
Apparent load
UPS load specifications
kVA …………….
kW …………….
Iload ……….……
PF ………...…..
CF ……...…….
AC load spec.
kWkVA =
PF
kW = kVA x PF
True load
P = I x V x PF
UPS sizing rev 1.3
8
Load phase current - ILoad phase current - IL1, L1, IIL2, L2, IIL3 L3
The max phase current is the highest possible load current from one phase
This value is very important when sizing the UPS
UPS load specifications
kVA…..……..
kW……..……
Iload……………
PF…………..
CF………….
IL1, IL2, IL3 , find max ILoad
Max loadphase current
Iload1
Iload2
Iload3
AC load spec.
UPS sizing rev 1.3
9
Power factor - PFPower factor - PF
W PF =
VA
Indicate the PF load working area when quoting to avoid later mistakes
Please consult APC if the load PF is outside the Silcon DP300E series specifications
AC load spec.
UPS load specifications
kVA …………….
kW …………….
Iload ……….……
PF ………...…..
CF ……...…….
Power factor is defined as “True power” divided by “Apparent power”
DP300E output capability:PFinductive load……… 0,8PFcapacitive load…….. 0,9PF SMPS…………… 0,6 - 1,0
UPS sizing rev 1.3
10
Crest factor - CFCrest factor - CF
Ipeak
CF = IRMS
Silcon DP300E series has a CF limiting feature which ensures that a load specified with a high CF will be limited to approximately a value of 3
- and the inverter will cope with this without derating
The consequence of above is that you can...
AC load spec.
UPS load specifications
kVA …………….
kW …………….
Iload ……….……
PF ………...…..
CF ……...…….
UPS sizing rev 1.3
11
Required information...Required information...
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Required info.
UPS sizing rev 1.3
12
Let´s make it...Let´s make it...
Step
By
Step
Required info.
UPS sizing rev 1.3
13
Required load informationRequired load information- finding the right UPS size...- finding the right UPS size...
Required info.
What is the right DP300E UPS size…?
kVA/ kW!
Max phase current
Max phase kVA load
orMax total kVA load at symmetrical load
Max kW load
and PF
1
2
3
one of these...
UPS sizing rev 1.3
14
When max load When max load currentcurrent is specified... is specified...
The Silcon DP300E series output capability is always specified at unity PF
The highest phase current therefore determines the UPS size Do the following if the max. load current is included in the
customers specification:
LOAD:
Max specified current:
3 x I load max >
DP300E - UPS:
Full load output current
3 x I out max
For 3-phase systems the current from the phase with the biggest load has to be used.
Required info.1
UPS sizing rev 1.3
15
Max. Max. kVAkVA load and load and PFPF specified specified
For 3-phase systems: - multiply highest loaded phase by 3
By symmetrical load, use the total kVA load
By unsymmetrical load, use the highest phase kVA load.
LOAD:
Max specified kVA:
SVA max >
DP300E - UPS:
Output power
Sout max
Required info.2
UPS sizing rev 1.3
16
Max. kW load only specified...Max. kW load only specified...
You need to know both kW and PF...
The kW as the only load specification is not sufficient information - unless the PF is unity !
LOAD:
>
Required info.
kWkVA =
PF
DP300E - UPS:
Output power
Sout max
3
UPS sizing rev 1.3
17
Inrush CurrentInrush Current
Equipment Inrush current/nom current Duration Power Factor
normal service
Computer CPU 6 to 10 2 to 8 cycles ind. 0,8 - 0,9
Computer Peripherals (printers etc.) - old computers 4 to 8 1 to 15 sec. 0,8 - 0,9
Incandescent lights 6 to 18 2 to 8 cycles 0,9 - 1,0
Motors 4 to 8 1 to 15 sec. 0,7 - 0,8
Battery chargers 6 to 10 2 cycles 0,6 - 0,8
Unregulated DC power supply 6 to 10 2 cycles 0,7 - 0,8
Transformer 6 to 10 2 cycles same as load
Required info.
Computer Peripherals (printers etc.) - modern computers 3 to 6 1 to 10 sec. 0,9 - 1,0
UPS sizing rev 1.3
18
Example 1...Example 1...
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Example...
UPS sizing rev 1.3
19
Example 1... Example 1... Power sizing the UPS...Power sizing the UPS...
kVA-loadPower factor on mixed loads
60 kVA/ kWPF =1
60 kVA/48 kW
PF = 0.8
Legacy UPS
system
?
DP300E
? 60 kVA60 kVA
UPS size = kVA load
Load 1: (8 kW / 0,8) = …..…….. 10 kVA
Load 2: (18 kW / 0,9) = ………. 20 kVA
Load 3: (30 kW / 1) = ……..…... 30 kVA
Sum of loads…... 56 kW…….……..……. Sum of loads…... 56 kW…….……..……. 60 kVA60 kVA
??70 kVA/ 56 kW
PF = 0,8
Legacy UPS system
?70kVA
UPS size = kVA and kW load
Example...
UPS sizing rev 1.3
20
Example 2... Example 2... Power sizing the UPS...Power sizing the UPS...
kW-load
Load 1: = …………..…..….. 10 kW
Load 2: =…………..………. 20 kW
Load 3: = ………..……..….. 30 kW
Sum of loads…………………………. 60 kWSum of loads…………………………. 60 kW
60 kVA/ kWPF =1
75 kVA/ 60 kW
PF = 0,8
Legacy UPS system
?DP300E
?75kVA
60 kVA
UPS load = Loads/ PF (0.8)
UPS load = Loads/ PF (1)
Power factor on loads = 1
Example...
UPS sizing rev 1.3
21
Silcon DP300E - Silcon DP300E - Power sizing the UPSPower sizing the UPS
Power sizing the DP300E UPSPower sizing the DP300E UPS Calculate the UPS-load in kVA
Define highest phase load
Choose the DP300E having its full load output power equal to - or bigger than the load
Additional considerations..
• Overload capacity• Redundancy• …….
- see the Power Binderfor further details
Additional considerations..
• Overload capacity• Redundancy• …….
- see the Power Binderfor further details
UPS sizing rev 1.3
22
Now - your turn...Now - your turn...
UPS sizing rev 1.3
23
Task 1Task 1
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Task 1
UPS sizing rev 1.3
24
Task 1 - Task 1 - Specify the UPSSpecify the UPS
Supply voltage…….3x400V - 50Hz
Supply current…….3x36A
Power Factor……….PF= 0,8
Crest Factor………...CF 3,2
Load specifications:
Task 1
UPS sizing rev 1.3
25
Silcon DP340EComments
• Ignore the PF and CF values
• In the Spec. Sheet /Quick Reference is found that:
• A Silcon DP320E has Iout 1/1 = 3 x 29A
• A Silcon DP340E has Iout 1/1= 3 x 57,7A
A Silcon DP320E is to small !
Task 1 - Task 1 - SolutionSolution
Solution:Solution:
Load specifications:
Supply voltage…….3x400V - 50Hz
Supply current…….3x36A
Power Factor……….PF= 0,8
Crest Factor………...CF 3,2
Task 1
UPS sizing rev 1.3
26
Task 2Task 2
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Task 2
UPS sizing rev 1.3
27
Task 2 - Task 2 - Specify the UPSSpecify the UPS
Supply voltage….….3x400V - 50Hz Phase current:I L1……………….12A PF 0,9 CF 2,7I L2……………….18A PF 0,8 CF 2,9I L3……………….17A PF 0,8 CF 3,0
Load specifications:
Task 2
UPS sizing rev 1.3
28
Solution: Silcon DP320EComments:
• Ignore the PF and CF values
• Take the highest phase current and compare it with the full load output currents listed in the data sheets
• Silcon DP310E has a full load output current of 3 x 14,5A
• I L2 requires 18A - so DP310E is not sufficient
A Silcon DP320E has to be used.
Task 2 - Task 2 - SolutionSolution
Solution:Solution:
Task 2
Load specifications
Supply voltage….….3x400V - 50Hz Phase current:
IL1……………….12A PF 0,9 CF 2,7IL2……………….18A PF 0,8 CF 2,9IL3……………….17A PF 0,8 CF 3,0
UPS sizing rev 1.3
29
Task 3Task 3
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Task 3
UPS sizing rev 1.3
30
Task 3 - Task 3 - Specify the UPSSpecify the UPS
Supply voltage….….3x400V - 50Hz
Phase power:P L1………………. 103 kW PF 0,9P L2………………. 106 kW PF 0,8P L3………………. 100 kW PF 0,8
Load specifications:
Task 3
UPS sizing rev 1.3
31
Solution: Silcon DP3480E
Comments:
• Phase PL2 has the highest kVA load
• SL2 = PL2/PFL2 = 106/ 0.8 = 132,5 kVA
• 3 x 132,5 = 397,5kVA
A Silcon DP3480E is the solution
Task 3 - Task 3 - SolutionSolution
Solution:Solution:
Task 3
Load specifications:
Supply voltage….3x400V - 50Hz Phase power:P L1………………. 103 kW PF 0,9P L2………………. 106 kW PF 0,8P L3………………. 100 kW PF 0,8
UPS sizing rev 1.3
32
Task 4Task 4
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Task 4
UPS sizing rev 1.3
33
Task 4 - Task 4 - Specify the UPSSpecify the UPS
Supply voltage….….3x380V - 50Hz
Phase power VA:S L1………………. 103 kVA PF 0,9S L2………………. 106 kVA PF 0,8S L3………………. 100 kVA PF 0,8
Load specifications:
Task 4
UPS sizing rev 1.3
34
Solution: Silcon DP3320E
Comments:
• Phase SL2 has the highest kVA load and decides the UPS size
• Stotal = 3 x SL2 = 3 x 106 = 318 kVA
A Silcon DP3320E is the solution
Task 4 - Task 4 - SolutionSolution
Solution:Solution:
Task 4
Load specifications:
Supply voltage….….3x380V - 50Hz Phase power VA:S L1………………. 103 kVA PF 0,9S L2………………. 106 kVA PF 0,8 S L3………………. 100 kVA PF 0,8
UPS sizing rev 1.3
35
Task 5Task 5
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review
Head linesHead lines
Task 5
UPS sizing rev 1.3
36
Task 5 - Task 5 - Specify the UPSSpecify the UPS
Supply voltage….….3x380V - 50Hz Phase power W:P L1………………. 35 kW PF 0,8P L2………………. 38 kW PF 0,8P L3………………. 40 kW PF 0,8
The motor load is included in the above spec.
Load specifications:
Task 5
•A 25 kW 3-phase motor (PF=0,8) is connected to the UPS (Inrush current is 6 x nominal in 15 sec. )
•The demand is that the motor has to be able to start in battery operation
UPS sizing rev 1.3
37
Solution: Silcon DP3160E…?
Comments:
• Phase L3 having the highest load
• SL3 = PL3/ PFL3 = 40/ 0,8 = 50 kVA
• 3 x 50 = 150 kVA
A Silcon DP3160E cut be the solution. But we have to check if the motor is able to start on battery operation...
Task 5 - Task 5 - SolutionSolution
Solution:Solution:
Task 5
Load specifications:
Supply voltage….….3x380V - 50Hz Phase power W:P L1………………. 35 kW PF 0,8P L2………………. 38 kW PF 0,8P L3………………. 40 kW PF 0,8
UPS sizing rev 1.3
38
CurrentL1 = 35 kW/ PF 0,8 / 220 V = 198,9 ACurrentL2 = 38 kW/ PF 0,8 / 220 V = 215,9 ACurrentL3 = 40 kW/ PF 0,8 / 220 V = 227,3 A
Current Motor = 25 kW/ PF 0,8 / 380V x 1,732 = 47,5 A
Inrush Motor = 47,5 A x 6 = 285 A
Inrush & load = 227,3 + (285-47,5) = 465 A
Task 5 - Task 5 - SolutionSolutionLoad specifications:
Supply voltage….….3x380V - 50Hz Phase power W:P L1………………. 35 kW PF 0,8P L2………………. 38 kW PF 0,8P L3………………. 40 kW PF 0,8
Task 5
UPS sizing rev 1.3
39
Solution: Silcon DP3240E
Comments
•DP3160E have 150% overload capacity of 346,5 A
•DP3240E have 150% overload capacity of 519 A
•A Silcon DP3160E can’t handle the start up of the Motor
A Silcon DP3240E is the solution
Task 5 - Task 5 - SolutionSolutionLoad specifications:
Supply voltage….….3x380V - 50Hz Phase power W:P L1………………. 35 kW PF 0,8P L2………………. 38 kW PF 0,8P L3………………. 40 kW PF 0,8
Task 5
UPS sizing rev 1.3
40
Solution: Silcon DP3240E
Comments•DP3160E have 150% overload capacity of 346,5 A
•DP3240E have 150% overload capacity of 519 A
•A Silcon DP3160E can’t handle the start up of the Motor
A Silcon DP3240E is the solution
Overload alarm...Overload alarm...Load specifications:
Supply voltage….….3x380V - 50Hz Phase power W:P L1………………. 35 kW PF 0,8P L2………………. 38 kW PF 0,8P L3………………. 40 kW PF 0,8
Task 5
Please observe….The Silcon DP3240E will generate an overload alarm
whenever the motor starts!!!
UPS sizing rev 1.3
41
ReviewReview
Review
AC Load Specification
Required information
Examples...
Task 1...
Task 2...
Task 3...
Task 4...
Task 5...
Review