Qingdao Hengfengyou Electrical Engineering Co., Ltd.
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S11 international standard 10KV 100kva 500kva oil type immersed power transformer made in China
OIL IMMERSED TRANSFORMER
Transformers/reactors/ Intelligent integrated substations-Smart Energy for Better Life
1. One of the drafters of the National Standard Mine Flameproof Mobile Substations (GB/T 8286),
which will replace the existing national standard (GB/T 8286-2005 ) and it was submitted for trial in Beijing.
2. +20 years experience R&D team, derived from 60 years of history transformer manufacturer in Changsha,
Hunan, China since 1956.
3. Full range of transformer types with customized functions is available.
4. CE & ISO certificated.
Service Condition
A) Suitable for indoor or outdoor application
B) Air temperature: Maximum temperature: +40℃; Minimum temperature:-30℃
C) Humidity: Monthly average humidity 95%; Daily average humidity 90%
D) Altitude above sea level: ≤1000m.
E) Max wind speed:35M/s
F) Ambient air not apparently polluted by corrosive and flammable gas, vapor, etc.
G) No frequent violent shak
Grounding Transofrmer Application:
The grounding transformer is used to provide a path to an ungrounded system or when the
system neutral is not available for some reason, for example, when a system is delta connected.
It provides a low impedance path to the neutral and also limits the transient overvoltage when the
ground faults occur in the system. The grounding of the system can be done in the following
wayDelta-Star Grounding Transformer
In a case of delta-star grounding transformer, the delta side is closed to provide a path for zero-sequence current.
The star winding must be of the same voltage rating as the circuit that is to be grounded, whereas the delta voltage
rating can be chosen to be any standard voltage level.