Products

WHB-891 Integrated Protection and Measurement & Control Device

WHB-891 integrated protection device apply to substations or distribution stations of 35kV voltage class and below, the device can be configured flexible according to usage occasion for line protection device, charge protection device, station transformer protection device, capacitor protection device, motor protection device, motor differential protection.

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Application

Line protection device apply to protect line and feeder line of 35kV voltage class and under;

Charging protection device apply to protect bus (subsection) of 35kV voltage class and under;

Station transformer protection device apply to protect station transformer, house transformer and grounding transformer of 35kV voltage class and under;

Capacitor protection device apply to protect parallel capacitor installed by substation or distribution substation of 35kV voltage class and under;

Motor protection device apply to protect small and medium asynchronous motor below 2000 kw of 10kV voltage class and under;

Motor differential protection apply to protect huge asynchronous motor above 2000 kw of 10kV voltage class and under.

Product features

All components of series of deviceadopt the military or industrial goods with high stability and high reliability, which can stable operation in harsh industrial environments;
Integrated chassis design, highly convenient for maintenance; Perfect self-checking function for hardware and software and free adjustment circuit design make it simpler to debug;
The hardware design of the device adopts many kinds of isolating and shielding measures, the software design adopts digital filtering techniques, advanced protection algorithm and other anti-interference measure, These design schemes improve the performance on anti-interference greatly;
Using SoC solution, strongly data processing, logic operation and information storage capacity, fast running speed, highly reliability;
Flexible and powerful communication function: supports both RS485 serial communication mode and Ethernet communication mode; Communication protocols support DL/T667-1999 (IEC-60870-5-103), the Modbus protocol, can achieve communication with other manufacturers’ automation system flexibly;
Flexible support network timing, GPS pulse timing, B-code timing, to ensure that the device has a unified and accurate clock;
Provided with perfect measurement function, can measure and upload power point of interval which device is located in, measuring precision can be up to ± 0.5%;
Provided with perfect remote-communicating and remote-controlling function, backgrounds supervising system can remote trip/close the breaker simply and reliably, the SOE resolution of the station can achieve 2 ms;
Provided with perfect events protection treatment, can store latest 100 incident report records and 100 action report records, can record 5 fault waves continuously, each wave recorded can records 10 frequency waveforms of current and voltage;
Provided with friendly man-machine interface, full Chinese menu mode, clear structure, easy to use;
Provided with operating loop which can be configuration flexibly, can adapt to all kinds of operating mechanism.

Function Configuration

Function Classification	No.	Function name	Protection object configuration
Function Classification	No.	Function name	Line	Capacitor	Station transformer	Motor	Charge	Motor differential
Protection function	1	Three-section overcurrent protection	√ (directional and undervoltage block)	√ (complex- voltage block)	√	√	√	√
	2	Overcurrent accelerating protection	√
	3	Overload protection	√		√		√	√
	4	Inverse-time overcurrent protection	√		√	√	√	√
	5	Two-section charging protection		√
	6	FC loop blocking protection			√		√	√
	7	Motor start overtime protection					√	√
	8	Thermal overload protection					√	√
	9	Two-section definite time negative sequence overcurrent protection			√		√	√
	10	Inverse-time negative sequence overcurrent protection					√	√
	11	Three section zero-sequence overcurrent protection	√	√	√	√	√	√
	12	Low voltage side zero sequence overcurrent protection			√
	13	Low voltage side zero sequence inverse-time overcurrent protection			√
	14	Undervoltage load shedding protection	√
	15	Voltage loss protection	√
	16	Under frequency load shedding protection	√		√		√	√
	17	Undervoltage protection			√	√	√	√
	18	Overvoltage protection				√	√	√
	19	Zero-sequence over-voltage protection			√
	20	Unbalanced current protection				√
	21	Unbalanced voltage protection				√
	22	Three-phase one-shot automatic reclosing function	√
	23	Four way non electrical quantity protection	√	√	√	√	√	√
	24	Differential quick-break protection						√
	25	Percentage differential protection						√
Auxiliary Function	1	Control loop abnormal detection	√	√	√	√	√	√
	2	Hardcart position abnormal detection	√	√	√	√	√	√
	3	spring unstored energy detection	√	√	√	√	√	√
	3	Circuit breaker open position abnormal detection	√	√	√	√	√	√
	5	Voltage transformer supervision	√	√	√	√	√	√
	6	Line voltage transformer supervision	√
	7	Manually tripping access abnormal detection	√	√	√	√	√	√
	8	Difference current out-of-limit detection						√
	9	Current transformer supervision						√
Measure and Control Function	1	Remote signaling acquisition	√	√	√	√	√	√
	2	Remote control tripping and closing circuit breaker	√	√	√	√	√	√
	3	Analog telemetering acquisition	√	√	√	√	√	√
	4	Fault wave records	√	√	√	√	√	√

Products

WHB-891 Integrated Protection and Measurement & Control Device

WHB-891 Integrated Protection and Measurement & Control Device

Application

Product features

Function Configuration

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