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Pole Mounted Transformer
Pole Mounted Transformer Illustration
PRODUCT OVERVIEW

Pole Mounted Transformer

Powering Safe & Efficient Energy Distribution

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Technical Specs
Data Sheet

Main Features

Parameter Details
Applicable Standard
ANSI C57.12.20
Type
CON and CSPCON Type & CSP Type
Frequency
60Hz / 50Hz
Efficiency Standard
DOE 2016 / CSA 802.1 / TP1
Core
C.R.G.O (Cold Rolled Grain Oriented) / Core & Amorphous Core
Winding Material
Cu-Cu / Cu-Al / Al-Al
Tap Range
±5% in 2.5% increments (4 tap positions: +2, +1, 0, -1, -2)
Product Scope
5 kVA – 167 kVA
Primary Voltage
2400V to 19920V
Secondary Voltage
120V to 600V
Additional Parameter Details
Insulation Class
Typically Class A or B (consult spec sheet for precise class)
Cooling Method
ONAN (Oil Natural Air Natural)
Mounting Type
Pole-mounted or Pad-mounted (based on CSP or CON type)
Temperature Rise
Generally 55°C / 65°C
Impedance Range
Usually 2% to 6% depending on size
BIL (Basic Impulse Level)
95kV (typical for 15kV class), varies with voltage rating
Enclosure Type
Sealed Tank (with pressure relief) or Conventional vented tank
Protection Features (CSP)
Internal primary fuse, secondary breaker, lightning arrester, relay

Single-Phase Pole-Mounted Distribution Transformers

Rated Power (kVA) High Voltage (kV) Low Voltage (V) No-Load Loss (W) Load Loss (W) Oil Weight (kg) Total Weight (kg)
3
6, 6.35, 6.66, 7.2, 7.6, 10, 11, 13.2, 13.8
120/240, 240/480, 139/277, 120/208, 600
9
45
–
–
5
Same as above
Same as above
19
75
–
–
10
Same as above
Same as above
36
120
22
150
15
Same as above
Same as above
50
195
30
210
25
34500 / 19920 or 6–13.8 (per above)
120–240, 240–480, 347, 600
80
290
45
258
37.5
13800 / 7957
Same as above
105
360
50
340
50
13200 / 7620
Same as above
135
500
62
395
75
12470 / 7200 or others
Same as above
190
650
88
480
100
Same as above
Same as above
210
850
94
530
167
Same as above
Same as above
350
1410
138
680
250
–
–
–
2000
–
990
333
–
–
–
2500
–
1160

Transformer Manufacturing Overview

Transformer Specifications we follow and passed to produce the product.

Three Phase Transformers Table 2

Voltage Ratio kVA Rating Maximum No-Load Losses in Watts Maximum Load Losses in Watts
33kV/400/230V
25
85
1210
33kV/400/230V
50
160
1440
33kV/400/230V
100
310
1900
33kV/400/230V
200
540
2810

Single Phase Transformers Table 3

Voltage Ratio kVA Rating Maximum No-Load Losses in Watts Maximum Load Losses in Watts
33kV/250V-0-250V
10
25
614
33kV/250V-0-250V
15
40
652
33kV/250V-0-250V
25
52
780
33kV/250V-0-250V
50
100
1008

Standards Compliance

We adhere to the following international standards to ensure the quality and reliability of our pole-mounted transformers:

  • IEC 60137 – Insulated bushings for AC voltages above 1 kV
  • IEC 60076-1 – Power Transformers – General
  • IEC 60076-2 – Temperature rise
  • IEC 60076-3 – Insulation levels, dielectric tests, and external clearances in air
  • IEC 60076-5 – Ability to withstand short circuits
  • IEC 60076-7 – Loading guide for oil-immersed transformers
  • IEC 60296 – Specification for unused mineral insulating oils for transformers and switchgear
  • IEC 60076-10 – Determination of transformer and reactor sound levels
  • IEC 60437 – Radio Interference Test on High Voltage Insulators
  • IEC 296-1969, IEC 76 – Specification for power transformers
  • IEC 296-1969 – Bushing for alternating voltages above 1000V
  • DIN 42531 to 33 – Specification for Outdoor Bushings
  • ASTM D-1275 – Specification for fittings and accessories for power transformers
  • IEC 76 – Guide for loading of oil-immersed transformers
  • BS 159:1957, BS 3288 (Part-1):1960 – Electrical power connector
  • IEC 554 – Specification for Insulating Kraft Paper
  • IEC 641 – Specification for Insulating Press Board
  • ASTM B-233 – Specification for Al Wire rods
  • ASTM D-1275 – Manual on Transformer
  • ASTM D-202 – Testing of Insulation Papers
  • ISO 2063 – Metallic Coatings – Protection of Iron and Steel against Corrosion

Commitment to Quality

Our strict compliance with these standards ensures that our pole-mounted transformers are built to withstand rigorous conditions while delivering optimal performance. We focus on insulation, temperature management, sound level control, and corrosion protection to maintain excellence in every product.

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