Products

WHB-898 Backup Power Automatic Switch Device

WHB-898 Backup Power Automatic Switch Device

WHB-898 is an advanced backup power automatic switch device designed for automatically switching section (bus-tie or bridge) switches for voltage classes up to 35kV. It features bus tie protection functions and can be directly installed in high voltage switch cabinets or combined panels.

Application

WHB-898 backup power automatic switch device is a backup power automatic switch device with perfect and advanced functions, which mainly applied to automatic switch section (bus tie or bridge) switch of 35kV voltage class and below. The device is equipped with bus tie protection functions and can be directly installed in the high voltage switch cabinet or combined panel.

Product features

  • 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;
  • 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 function 1 Section (bridge) switch auto-switching
2 Three-section overcurrent protection
3 Overcurrent accelerating protection
4 Zero-sequence overcurrent protection
5 Zero-sequence overcurrent accelerating protection
6 Overload cutoff protection
7 Bus voltage transformer line-break detection
8 Switch open position abnormal detection
9 Section switch control loop abnormal detection
10 Section switch handcart position abnormal detection
11 Section switch spring unstored energy alarm
Measure and Control Function 1 Remote signaling binary input acquisition, device remote signaling change, alarm remote signaling
2 Remote control tripping and closing circuit breaker
3 Fault wave records
4 Analog telemetering acquisition