Products

WHB-897 Backup Power Automatic Switch Device

WHB-897 Backup Power Automatic Switch Device

WHB-897 is an advanced automatic switch device designed for backup power applications. It automatically switches the incoming line and section (bus-tie or bridge) switches for voltage classes up to 35kV. This device can be directly installed in high voltage switch cabinets or combined panels.

Application

WHB-897 is an advanced automatic switch device designed for backup power applications. It automatically switches the incoming line and section (bus-tie or bridge) switches for voltage classes up to 35kV. This device can be directly installed in high voltage switch cabinets or combined panels.

Product features

  • See Figure 1-1 for device protection configuration. All components of series of device adopt 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 remote-communicating function, 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.

Function Configuration

Function Classification No. Function name
Protection functions 1 Incoming line auto-switching (mode 1,2,5,6)
2 Section (bus-tie or bridge) switch auto-switching
3 Auto-switching auto-recovery function
4 Incoming line 1/2 overcurrent accelerating protection
5 Incoming line 1/2 overload protection
6 Bus voltage transformer supervision
7 Incoming line voltage transformer supervision
8 Switch open position abnormal detection
Measure and Control Function 1 Remote signaling binary input acquisition, device remote signaling change, alarm remote signaling
2 Analog telemetering acquisition