CSP Oil Immersed Circuit Breakers
For 57.4MM mounting hole size Completely Self-Protected(CSP) Oil immersed Distribution Transformers.
Ketrans CSP circuit breaker, an oil-immersed circuit breaker uses oil for insulation and arc extinction to protect electrical systems from faults. Provides secondary fault and overload protection to the transformer.
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Understanding CSP System Technology
Complete self-protected technology is a protection system for distribution transformers.Protects the transformers from lightning, secondary faults, severe overloads and provides visual warning for abnormal loading conditions.There are several CSP system components such as the lighting arrester, current fuse link and the low voltage breaker.
Understanding CSP Circuit Breaker
The low voltage LV circuit breaker is the central component of CSP system Technology. Provides secondary fault and overload protection to the transformer. Mounted inside of the transformer and it is connected between the secondary winding and secondary bushing.
Technical Details for oil-immersed CSP Circuit Breaker
The CSP breaker is connected to the transformer between the low-voltage winding and the internal terminals of the secondary bushing. The connections are arranged so that the secondary load current passes through both the breaker’s bi-metal element and the contacts. This configuration allows proper monitoring of the transformer’s secondary current and load levels.
The breaker is available with two optional auxiliary features: a signal light contact and an emergency control setting.
The signal light contact is connected to the signal light circuit to provide an early warning of transformer overload. The signal light operates on approximately 4 to 6 volts, supplied by an auxiliary winding consisting of one or two turns through the core. (This signal contact is optional and should be specified if required.)
The emergency control mechanism is a mechanical linkage inside the breaker that shifts it to a higher temperature calibration setting when moved into the emergency position. (This feature is also optional and should be specified if desired.)
How to select the right CSP circuit breaker for your transformer？
When selecting the right CSP circuit breaker, provide the following information:
♦️Transformer oil tank shape: Pole Mounted or Pad Mounted transformer?
♦️Number of Poles: Single phase 2 poles or three phase 3 pole?
♦️Transformer capacity(KVA): 5KVA,10KVA,25KVA…..
♦️Transformer voltage(V): high and low voltage value
♦️Transformer impedance(%): Short circuit impedance
