20 Years of Establishment Chinese Professional Transformer Manufacturer Cesi Kema CSA Ce IEC IEEE Epoxy Resin Cast up to 35kv Dry Type Transformer

Company Introduction




Shenda ( In full: Shenda Electric Group Co.,Ltd.)  is one of the leading manufacturers in the power transmission & distribution industry. Founded in 2000 and currently employs about 1,100 employees worldwide. Shenda operates four factories (three in China and one in the United States of America - R. E. Uptegraff Manufacturing Company, LLC of Pennsylvania, U.S.A.).  Shenda also owns other ten subsidiaries throughout China. The annual gross sales is USD$250 million in 2015.

Shenda's annual total production capacity is about 18,000,000 KVA, Our main products include oil immersed power transformer(up to 250MVA/ 330kV) , dry type transformer(up to 20MVA/35kV), combined transformer substation, amorphous alloy transformer, rectifier transformer (100MVA/220kV )and especially furnace transformer(180MVA/220kV). Our products' performance measures up to the standards established by International Electric Committee (IEC). 

shendaelectric.en.made-in-china.com

Product series
Cast Resin Dry-type Transformer
1)Certificates;CTQC,ISO9001.ISO144001CE 
2)Apply for IEC .GB.ANSI 
3)UP to 50KV .20000KVA 
4)Low losses 
Application Of Products
     Our SC(B) series epoxy resin cast dry transformer is cast under vacuum with thin insulating bands automatically . The core is made of high-permeable grain-orientated silicon sheet and cast with imported epoxy resin. Thanks to advanced technology, quality raw materials , scientific management, and perfect inspection means ,our products have the following features:
             The coil is reinforced with glass fiber and cast under vacuum with filler epoxy resin. It has good mechanical properties, is free of crack and inner bubble and has low local discharge, high reliability, and long service life.
              The high-and  low-voltage systems are cast under vacuum, thus the coil will not absorb moisture; the clamps of core are subjected to corrosion-resistant treatment and it may run under high temperature or other serious environments.
             Flame retardancy , explosion-proof and no environmental contamination. The insulating materials in the coil such as glass fiber are self-extinguishing and they will not cause fire by the arc resulted from short-circuit . The resin will not generate toxic or harmful gas under high temperature.
             Gas duct is embedded inside it to enhance the radiation power and over-load capacity.
              Low loss and low noise. The core is lapped with 45 full-miter  and the step-type lamination effectively improves distribution of magnetic flux at core corners, and greatly reduces the no-load loss and the nose level.
              It highly withstands short-circuit and lightning impact.
              Small in volume, light in weight, safe in running and free of maintenance.
              As per users' requirements the transformer may be provided with casing and blower fan

Certifications
100MVA/220kv power transformer short circuit test report
-issued by CESI Italy&CTQC China

120MVA/33KV oil EAF transformer
50MVA/69KV oil power transformer
10MVA/33kv dry-type transformer
Type test report
-issued by KEMA Netherlands

63MVA/110KV Power transformer short circuit test report
-issued by CTQC China

12.5MVA/22KV Rectifier transformer routine test
-issued by V-Check korea

ISO 9001&ISO14001&OHSAS 18001
CE-POWER TRANSFORMER&FURNACE TRANSFORMER&DRY-TYPE TRANSFORMER&REACTOR


Test lab
Testing are conducted for every transformer before delivery.Tests are classified to be routine tests and type test.
A - Routine tests: According to IEC 60076 standard , the following tests must be carried out for all units of the transformers
- Measurement of winding resistance .
- Measurement of voltage ratio and check of phase displacement.
- Measurement of short circuit impedance and load losses.
-Measurement of no-load losses and current .
-Dielectric routine tests including the separate source AC voltage withstanding test and short duration induced over voltage withstanding test ( ACSD ) .

B - Type tests :
The following tests shall be carried out
- Temperature rise test
- Lightning impulse test

C - Special tests :
- Determination of noise level according to IEC 60551 .
- Oil leakage test
- Overload test at 150 % rated current for one hour after temperature rise test ( top oil temperature rise and winding temperature rise must be measured and recorded in    the report test also hot spot temperature rise must be calculated and recorded on the report test ) .
- Short Circuit Dynamic stability Test (test report from independent and accredited laboratory for similar transformer will be accepted).

Client inspection


Packaging and transportation

Factory documentation
Engineering Services
During the design process, client will be permitted to come to factory to take a supervision and guidance, manufacture and acceptance test.
We provide engineering services like pre-commissioning / commissioning / install and operation consult support / technicians training on site.
We provide after-sales service.
We provide 12 months warranty of quality and performance