9672C integrated protection measurement and control device for transformer= distribution transformer and differential protection+ distribution transformer and back-up protection. One can be used as two. The transformer supplies in electric power sector and industrial and mining enterprises in general and the transformer is a complete and practical integrated protection.
Protection functions:
Differential Current instantaneous trip protection
Percentage differential protection
CT line-break locking Percentage differential protection
Current instantaneous trip protection
Over current protection
Overload Protection
Zero-Sequence Over-Current Protection
Low voltage protection (Tripping operation)
Non-electricity protection
Light gas (Alarm)
Heavy gas (tripping operation)
Temperature rise (tripping operation)
Excessive temperature (tripping operation)
Pressure release (turn on- tripping operation; turn off- alarm)
Measurement functions:
Busbar voltage : Uab、Ubc、Uca；Ua、Ub、Uc；
Measuring current : Ia、 Ib、 Ic、
Power: P Q
Frequency: f
Power factor: cosФ
Control functions:
Control the circuit break
Opening and closing of circuit breaker by hand
Opening and closing of circuit breaker by remote control
Fault recording
Communication mode
485 communication
Ethernet communication
Fiber-optic communication
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