General

CHNGS overhead transformer may be used alone forthe supply of a single phase load or as one of three units ina bank for the supply of a three phase load. The unit maybe direct mounted to a wooden or concrete pole. or
cluster mounted on a pole for three phase use. Our
single phase overhead distribution transformer is
commonly used in various places including rural areas
remote regions and scattered villages to provide high
quality power supply for daily lighting, agricultural
production and industrial plants. Aside from these, it is also
suitable for the energy saving proiects for railway and urban grid
Product Standards
1.IEEE Std C57.12.00m-2000 standard-IEEE Standard for Standard General Requirements foriauid-mmersed Distribution, Power, and Regulating Transformers

2.IEEE Std C57.12.20JM-2005 standard -IEEE
Standard for Overhead-Type DistributionTransformers, 500kVA and Smaller: High Voltage34500V and Below: Low Voltage, 7970/13800Y V
and below

3.IEEE Std C57.12.31M-2010 standard -IEEEStandard for Pole Mounted Equipment-Enclosure Integrity

4.IEEE Std C57.12.35-1996 standard-IEEE
Standard for Bar Coding for Distribution Transformers

5.IEEE Std C57.12.90-2006 standard -IEEE
Standard Test Code for Liguid-Immersed Distribution, Power, and Regulating Transformers

6.IEEE Std C57.12.91-2001 standard-lEEE Guidefor oading Mineral-Oil-mmersed Transformers

7.NEMA TR 1-1993(R2000)Elevated Temperatures(ASTM)American Society for Testing Materials
Main Features
1.Type: Conventional or CSP type

2.Suitable for both indoor or outdoor

3.Ambient temp:-25℃-+40℃

4.Winding temp rise :55 ℃ or 65 ℃

5.Core: CRGO or Amorphous Core

6.Efficiency standard: DOE 2016 Or NEMA TP1

7.Winding material : CU or Al

8.Frequency: 50HZ or 60HZ

9.Capacity : 5kVA to 333kVA

Quality Assurance
CHNGS Quality assurance is an integral part of the process. All electrical testing is perlEEE standards.. Quality of processed parts and subassemblies are the responsibility of theproduction personnel. Regular quality inspections and spot checking are conducted to makesure that good and consistent quality is achieved and maintained
Routine Tests

1.In-process Core Loss Test
2.Transformer Turns Ratio Test
3.Winding Resistance Test
4.Polarity and Phase Displacement Test
5.Insulation Power Factor Test
6.Liquid Insulation DBV Test
7.No Load Loss & Excitation Test
8.Impedance Voltage & Load Loss Test
9.Voltage Ratio Test
10.Applied Potential Test
11.Induced Potential Test

Type Tests

1.Temperature Rise Test
2.Basic lmpulse Level (BIL)
3.Sound Level test