Summary
The three-phase oil-immersed distributing transformer applies new type insulating structure and makes short-circuit resistance strong. The iron core is made of high-quality cold-rolled silicon-steel plate. High-voltage winding group is made up of high-quality oxygen-free copper lines and it adopts multilayered drum type structure. All fasteners have been processed with special treatment to prevent them from loosening.
Reliable Structure
Spiral loops with longitudinal oil path to produce a better interior cooling effect;
Improve the effectual support of the loop's terminal face to strengthen the anti-short circuit electricity capability;
New suspending structure and instrument-positioning frames to guarantee that the long distance transport and movement will be more reliable.
Excellent Materials
Oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.
High-quality wooden laminating insulation pieces, which won't split or move even under the influence of short circuit.
Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.
High-quality rubber sealing material, which can prevent the transformers form aging or leakage.
Transformer Service Condition
Altitude cannot exceed: 1000m
Highest ambient temperature: +40° C
Highest daily average temperature: +30° C
Highest annual average temperature: +20° C
Lowest outdoor temperature: -25° C
Good Technology
Compare with S7 series product, S9 series product reduces the no-load loss by 10%, load loss by 24% and no-load electric current by 46%; As a result, the operating cost will drop by 19%. Improved from S9 series product, S11 series product reduces the no-load loss by 20%; No-load electric current by 70%85%; Average temperature by 10K; Noise level by 2-4db; And double the products' service life. Even under 20% overloads, it can also work for a long period of time.
.
| Capacity Range |
Voltage Range |
Tap Changer |
Cooling System |
Other technical parameter |
| OLTC |
NLTC |
| 25-3000KVA |
11-33KV |
MR,,HM |
Others |
ONAN,ONAF,OFAF,OFAN and etc. |
IEC,ANSI,IEEE or relevant standard |
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
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).
Projects on Site
Packaging and transportation
Audited Supplier 
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