POWER SOLUTIONS

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Three-Phase Pad-Mount Transformers

Pad-mount transformers are ground-mounted distribution transformers enclosed in a metal cabinet, usually located on a concrete pad. This type of transformer, enclosed in a grounded metal box with all live contact points, can be installed in residential areas without fencing, unlike transformers in substations.

MPS’ pad mount transformers a MPS’ pad mount transformers are protected against tampering and the weather, so they can be safely placed where people are present. All enclosures are made from heavy gauge sheet steel and powder painted with a baked-on coating to make them tamper-resistant. Our pad mount transformers come in live-front and dead-front designs along with radial or loop feed.

Our transformers are made of high-grade materials and typically support residential, commercial, and industrial loads in cities and rural areas. They are filled with sustainable and biodegradable dielectric fluid, which offers excellent fire protection and a longer lifespan.

MPS manufactu MPS manufactures a full variety of liquid-filled Three-Phase Pad-Mounted distribution transformers that comply with ANSI/IEEE standards.

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General Characteristic

Base KVA Rating

45 kVA through 10,000 KVA

Primary Voltages:

600-35,000

Secondary Voltages:

208/120Y - 34,500V

Phases:

Three

Frequency:

50 Hz, 60H

Standard:

IEEE/ANSI, CSA

Tank Type:

Pad-Mount

Windings:

Copper, Aluminum

Design Specifications

HV Bushings Configuration

  • Dead-Front or Live-Front
  • Loop Feed or Radial Feed

Fluid Option

  • Type-II Mineral Oil
  • Non-Mineral Oil (Synthetic Ester, Natural Ester)
  • Envirotemp™ FR3™

Overcurrent Protection

  • Bayonets Fusing (Current sensing (CLF), High amperage overload)
  • Surge arresters
  • Elbow arresters (for dead-front designs)

Construction

  • Rectangular Wound Copper or Aluminum Windings
  • Mild Steel or Stainless Steel Tank
  • Steel divider between HV and LV cabinets
  • Penta-head Captive Bolt
  • Stainless steel door hinges
  • Bolted cover for tank access

KVA Ratings (45-5000 KVA)1

  • 45, 75, 112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000, 2500, 3000, 3750, 5000.
  • 1 Transformers come in standard ratings and can be customized for specific requirements

Winding Connection Configurations

  • Delta – Wye
  • Grounded Wye – Wye
  • Delta – Delta
  • Wye – Wye
  • Wye – Delta

Nameplate

  • Stainless Steel Nameplate

Cooling Mechanism

  • ONAN, KNAN

Standard Testing

Every transformer undergoes all standard commercial tests in accordance with ANSI C57.12.90.

  • Heat Run Test
  • ANSI Impulse Test
  • Audible Sound-Level Test
  • 8- or 24-Hour Leak Test
  • Temperature Test
  • Turn Ratio Test
  • Windings Resistance Test
  • Polarity Test
  • Induced Voltage Test

Ancillary Equipment

  • Oil Temperature Indicator (OTI)
  • Winding Temperature Indicator (WTI)
  • Magnetic Oil Level Gauge (MOG)
  • Forced Fan Cooling
  • Marshalling Box
  • Pressure Relief Device (PRD)
  • Radiator Valves
  • Dehydrating Breather
  • Adjustment Taps

Optional Design Features & Accessories:

  • Gauges with Contacts
  • External drain and sample valve
  • Electrostatic Shielding
  • High-Voltage warning signs
  • ANSI tank ground pads
Audible Sound Levels (as per NEMA Standards)

Two-Winding KVA Rating

Decibels (dB)

45-500

56

501-700

57

701-1000

58

1001-1500

60

1501-2000

61

2001-2500

62

2501-3000

63

3001-4000

64

4001-5000

65

* The measurements and weights are for reference only. For exact dimensions, please get in touch with MPS.

Transformer Dimensions

Rating (KVA)

Height (mm) A

Width (mm) B

Depth (mm) C

Oil Weight (kg)

Total Weight (kg)

225

1530

1510

980

201

989

300

1680

1660

1080

260

1415

500

1790

1810

1160

325

1905

750

2030

2030

1300

535

2755

1000

1854

1651

1549

650

3235

1500

2150

2210

1470

748

5835

2000

2220

2380

1600

950

6430

2500

2330

2480

1650

1020

8865

45

1430

1350

900

100

540

75

1430

1390

910

120

645

112.5

1430

1420

920

138

729

150

1530

1510

980

201

989

Padmount Transformer Outline

Padmount Transformer Outline

Transformer Applications

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