product training: the basics - jefferson electric

Product Training:

The Basics

December 2019

Introduction Overview of JEI Transformers

Transformer Basics Low voltage offerings Medium voltage offerings Resources for sales

Jefferson Product Training

Transformer Basics • What is covered:

• Transformer design and construction • Terms and definitions • Single and three-phase configurations • Sizing, specifying


Transformer Basics

Standard transformers consist of:

Coil (Conductor, windings)

Core (Laminations)

Insulation

Enclosure

C om p o n en ts

C O R E

PR IM A R Y

W IN D IN G

S EC O N D A R Y

W IN D IN G

IN SU LA T IO N

Transformer Basics

Typical 3-Phase Ventilated Unit

Transformer Basics

Typical Encapsulated Unit

Transformer Basics

Basic Terms to Know Dry Type Transformer A transformer that is cooled by means other than a liquid, usually airflow

kVA Kilovolt ampere or thousand volt ampere. This is how transformers are rated.

Line Voltage Also known as the primary voltage. This is the voltage from the source.

Load Voltage Also know as the secondary voltage. Voltage required to operate the load.

Transformer Basics

Basic Terms to Know Single Phase

Two lines of AC power (Hot & Neutral)

Three Phase Three lines of AC power where each line is 120 degrees out of phase with the other two (A, B & C)

For more terms see the website glossary .

https://jeffersonelectric.com/welcome/literature/support-materials/glossary

Transformer Basics

Meeting DOE-2016 Standards Jefferson Electric offers a full line of three phase Ventilated Dry Type Transformers designed to meet the highest industry standards for quality, durability, and reliability in the commercial, industrial, and OEM markets. Standards • Meets DOE 2016 standard Part 431, Subpart K for

energy efficiency • Built in accordance with NEMA, ANSI and CSA standards • UL and cUL Listed

Available Enclosures: NEMA 1 NEMA 3R NEMA 4 NEMA 4X NEMA 12 TENV

Transformer Basics

Configuration: Single Phase Many single phase transformers have dual primary and secondary voltages

For example 240 x 480 – 120/240

Primary is 240 or 480 Typically marked H1, H2, H3, H4

Secondary is 120 or 240 or 120 and 240 Typically marked X1, X2, X3, X4

Transformer Basics

Configuration: Three Phase Primary

Most three phase transformers have a single primary voltage in a “Delta” (3-wire) configuration. Typically marked H1, H2, H3

Example voltage configurations

480 – 208Y/120 (delta – wye) 600 – 240 (delta – delta)

Transformer Basics

Configuration: Three Phase Secondary Three phase secondary voltage may be a “Delta,”

3-wire or “Y” (Wye), 4-wire or Star configuration 3-wire = X1, X2, X3 4-wire = X0 (neutral), X1, X2, X3 The secondary can have a three phase voltage

and a single phase voltage

Example voltage configurations 480 – 208Y/120 (delta – wye) 600 – 240 (delta – delta)

Transformer Basics

Configuration: Three Phase Primary

■ Delta ■ Wye

480 V

480 V

480 V

208 V 208 V

120 V

120 V

Neutral

Transformer Basics

Configuration: Three Phase Actual Winding Example – Delta-Wye

H3

X2

X3

H2

H1 Primary

X1 Secondary

X0 Neutral

Transformer Basics

Configuration: Three Phase Secondary

■ Delta with center tap 240 V

120 V

240 V

208 V “high leg”

120 V

240 V

Transformer Basics

Transformer Sizing Transformer size is determined by the kVA rating of the load

(secondary=equipment).

Determine the load voltage

Determine the load current (amps)

Determine whether the load is single phase or three phase

Determine the line voltage

Transformer Basics

Transformer Sizing Transformer size is determined by the kVA of the load

Formulas Single Phase: VOLTS x AMPS = kVA 1000

Three Phase: VOLTS x AMPS x 1.73 = kVA 1000

See Catalog page 4 or website for reference.

https://jeffersonelectric.com/welcome/literature/support-materials/transformer-basics

Transformer Basics

3-Phase Transformer Sizing Full load currents In amperes (line to line)

kVA 208V 240V 480V 600V

3 8.3 7.2 3.6 2.9 6 16.6 14.4 7.2 5.8 9 25 21.6 10.8 5.8

15 41.6 36.0 18.0 14.4 30 83 72 36 29 45 125 108 54 43 75 208 180 54 43

112.5 312 270 135 108 150 416 360 180 144 225 625 542 271 217 300 830 720 360 290 500 1,390 1,200 600 480 750 2,080 1,800 900 720

Low Voltage Transformers

Overview Specifications Ventilated transformers Encapsulated transformers Options



Single-Phase Three-Phase Encapsulated Ventilated Special Voltages Drive Isolation Non-Linear (K-Factor)

Buck-Boost Industrial Control Lighting Transformers Pool & Spa Autotransformers, Prewired Seismic Totally Enclosed (TENV) ABS

Standard Offerings


Standard Transformers Available Ratings

• 50 VA to 2,500 kVA • Up to 600V • UL, cUL, CSA

Modified Standards Specials Contact Applications for a quote

Ventilated Transformers

• For general loads, including lighting, industrial and commercial applications

• Ventilated enclosures provide circulation of external air

• Enclosures are designed for air flow while protecting contents

• Large connection compartment make wiring and installation easy


Single Phase • 15 through 1,650 kVA • 60 Hertz • Aluminum Windings • 150°C temperature rise • NEMA 3R • Meets DOE-2016 and C802

standards for energy efficiency • Floor-mount design • Wall-mount Brackets available up

to 75 kVA


Three Phase • 15 through 2,500 kVA • 60 Hertz • Aluminum Windings • 150°C temperature rise • NEMA 3R • Meets DOE-2016 and C802

standards for energy efficiency • Floor-mount design • Wall-mount brackets available

up to 75 kVA


Options • Low Temperature Rise ( 80 & 115°C Rise) • Copper Windings • Electrostatic Shield • CE Mark • 50 Hertz • Special Voltages • Auto Transformers

• NEMA 1 enclosures • Floor-mount design • Special Paint


Efficiency: DOE-2016 vs TP1 • DOE more efficient than TP-1 • 75 kVA is 98.6% vs. 98% • TP1 required in 2007 • DOE required in 2016

• Meets DOE2016 standard

Part 431, Subpart K for energy efficiency

• All models now to this standard

• Enclosures with built-in weather shields (NEMA 3R)


Canadian High Efficiency • TP1 = CSA 802.2 • New NRCAN 2019 efficiencies

meet CSA 802.2.14 = DOE 2106 • Required to sell in Canada as of

April 2019 • “CSA Verified” required


K-Factor Rated • This is a rating devised by Underwriters

Laboratories to provide a uniform standard for transformers designed to handle non-linear loads, including solid state devices such as ballast computers and communication equipment

• K4, K13, K20 • 15 to 1,000 kVA • Electrostatic shields • 200% neutral • See Catalog page 3-2 to calculate

K-FACTOR TYPE OF LOAD

K-1 Resistance heating Incandescent lighting Motors Transformers • Control • Distribution

K-4 Welders Induction heaters HID lighting Fluorescent lighting Solid state controls

K-13 Telecommunications equipment Branch circuits in classrooms and healthcare facilities

K-20 Mainframe computers Variable speed drives Branch circuits with exclusive loads of data processing equipment


Drive Isolation Transformers For industrial and commercial applications with SCR-controlled adjustable speed motor drives and AC adjustable frequency or DC drives 3 to 990 kVA Primary Voltages

• 230, 460 or 575V Secondary Voltages

• 230Y/133V or 460Y/266V Specials

• 6, 12, 18 pulse • Reactors, Chokes, Ripple Filters • Contact Applications for Specials


Totally Enclosed Non-Ventilated (TENV) Applications: • Textile plants • Chemical plants • Foundries • Cement plants • Food packaging • Paper manufacturing • Wash down areas • Automotive

15 to 500 kVA NEMA 3R enclosure NEMA 4/4X (stainless) or other NEMA

enclosures optional Windings — Copper or Aluminum Temperature Rise — 150, 115, 80°C 60 Hz standard, 50 Hz optional Electrostatic Shields optional UL/cUL CE Mark, ABS and Seismic

Qualified optional

Encapsulated Transformers

For use where locations have environmental challenges – gases, dust, liquids

Windings are encapsulated with electrical grade resin

Units may be banked for 3-Phase operations


Three Phase • 3 thru 75 kVA • Lifting hooks on Wall Mount

Enclosures • 30 kVA and larger are Floor Mount • NEMA 3R • Optional stainless steel

enclosures

Single Phase • 50 VA thru 25 kVA • Wall-mount design • NEMA 3R standard


Pool and Spa Lighting Transformers 100 through 1000 watts

Single-Phase Encapsulated

Primary - 120 Volts

Secondary - 12/13/14 Volts

Resettable circuit breaker

60 Hertz operation

NEMA 3R rated


Pre-Wired Autotransformers Autotransformers • Lower cost

• Smaller footprint

Pre-wired • Easier to install

Panel boosters • Adjust voltage at panel

• 200 Amp to 800 Amp

Buck-Boost Transformers

Encapsulated transformers designed for correcting voltage drop, landscape lighting, low voltage lighting, international voltage adaptation and motor applications

Note: NOT to compensate for fluctuating line voltages

Buck-Boost Transformers

Low voltage applications 50VA to 10 kVA Single phase Isolation transformer

• 120 x 240V— 12/24V • 120 x 240V— 16/32V • 240 x 480V— 24/48V

Windings —Aluminum/Copper Enclosures — NEMA 3R 60 Hz standard Wall mounted with slotted

mounting holes

Buck-Boost Applications Single- or three-phase encapsulated

autotransformer • Open Delta uses two single phase

transformers • Wye uses three single phase

transformers Economical for stepping voltages up or

down Solve over/under voltage problems

efficiently

Industrial Control Transformers

For commercial and industrial control applications including

• Control panels

• Conveyor systems

• Machine tool equipment

• Pump systems

• Commercial AC applications

Core and coil design

Industrial Control Transformers

50 VA to 5,000 VA

UL and cUL listed

50/60 Hertz operation

Primary and Secondary Fuse Clips

Finger safe covers for terminals and fuse clips

Units 350VA and smaller come with “finger-safe” terminals. No need to buy terminal covers

Covers available for fuse clips

Boxes UPS shippable up to 2000VA

Most come with secondary fuse clips (-300 models)

Optional Primary fuse blocks

Common units stocked at warehouses

Custom designs available

Class I Division 2

Class I, Div 2 transformers are encapsulated units rated for use in Group A, B, C, D hazardous locations.

Environments where normally confined volatile and flammable liquids and gases are used but may be present due to accidental rupture or breakdown of their systems.

Applications: • Hazardous locations • Chemical plants • Refineries • Petrochemical • other industrial facilities

Specifications: • Single phase, 1-25kVA • Three phase, 3-75kVA • 600V max • Taps optional

Low Voltage Transformer Options

CE Mark Certified Product Meets European requirements

Ventilated product

Single phase

Three phase

Special voltages


Seismic Qualified Compliant with International Building Code (2015

IBC) and California Building Code (2016 CBC) OSHPD Certified (OSP-0109-10) Healthcare and Emergency response locations

• Hospitals • Fire Stations • Police stations

Seismic Ratings • z/h = 1.00 ; Ip = 1.5 • Encapsulated SDS=2.00g


ABS (American Bureau of Shipping) Applications: • Commercial ships • Military ships • Offshore and near

shore oil rigs • Tankers • Other marine applications • Petro-Chemical applications

1 to 1,000 kVA Single or Three phase Encapsulated or ventilated Low voltage (<600 volts) Dry-Type 60 Hz standard, optional 50 Hz 140°C Temperature rise, optionally 115, 80 Standard Taps NEMA 3R painted enclosure, optional

stainless steel Ventilated units NEMA TP-1 compliant Copper or Aluminum windings Optional electrostatic shielding Optional anti-condensation heaters

Medium Voltage Transformers

Overview Standard specifications Optional features Markets/applications



Power Transformers Economic and environmentally

friendly alternative to liquid filled transformers for industrial facilities and large commercial applications

For indoor and outdoor installations


Power Transformers Product Range Size: up to 10MVA KV Class: up to 34.5KV BIL Capability: 150KV

Sweet Spot • 300KVA – 5MVA • 5KV-25KV Class • 30-125KV BIL

Standard & Custom Designs UL/CSA up to 10mVA


Standard Specifications Copper or Aluminum Windings 150°C Rise / 220°C Insulation 60 Hz Single or Three Phase Taps: 2 +/- 2 ½ % VPI Processing Open Core & Coil or NEMA 1 Enclosure 12/18 month warranty


Optional Features/Specifications

115°C & 80°C Temp Rise 50 Hz, 50/60Hz NEMA 3R Enclosure Special Impedance Electrostatic Shielding Lightning Arrestors Fans Space Heaters Ground Bus

Digital Temperature Monitor Thermocouples Kirk Key Interlocks Filters NGR Ground Fault Relay Air Terminal Chambers Extended Warranty


New Product Introduction

MV Transformer/Load Break Switch Assembly 5KV & 15KV

• 600 & 1200 Continuous Amps

Fused or Non-Fused NEMA 1 & 3R Left or Right Side Orientation Transformer & Switch arrive at project

together • Without impacting the lead time


Markets/ Applications • Oil & Gas • Data Centers • Mining • Hydropower • Steel • Commercial

Sales Resources

Overview Catalog Website overview Quote Tool brief look Contacts See individual modules for more information


Sales Resources

Catalog Product Type Sections Quick specifier on page 4

• kVA calculator • Determining load and line voltage • Full load currents (in amperes)

Online only sections • Section 14-References • Section 15-Wiring Diagrams,

Enclosure Information and Shipping Dimensions

Sales Resources

Catalog Product Type Sections Sections in catalog are divided by transformer type First page contains broad

description of type Specifications Selling features Standards Options and accessories Approvals

Sales Resources

Catalog – other sections In Print

Power Quality

Digital only References Technical information, installation assistance Appendix Enclosure drawings Wiring Connections Shipping Dimensions

Sales Resources

Website General information About the company “Contact Us” links, forms Product information • Catalog information and

downloads • “Find a Product” spec

sheet creation • Log in for reps

Find a Product

Log in

Contact Us

Sales Resources

Website Product Type Sections Sections in our catalog are divided by transformer type First page contains broad

description of type Specifications Selling features Standards Options and accessories Approvals

Sales Resources

Product Specifier The best way to determine

a product number Contains no pricing

information Uses the same database

as our Quote Tool Open to everyone

More training in separate

module

Search by Catalog number or input specs

Output is a detailed specification sheet

Sales Resources

Contacts Office Contacts See our website for list

Sales Contacts Ed Armbruster, VP Low Voltage Sales 414-858-0826 Kent Kampwerth, Regional Sales Manager 414-858-0825 Dave Rycek, Regional Sales Manager 414-858-0809

https://jeffersonelectric.com/contact-us/dept_contacts

mailto:[email protected]




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product training: the basics - jefferson electric

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