Bw-hsci high-speed intelligent small current surface protection device is a new intelligent device launched on the basis of improving and perfecting the past small current line selection, harmonic eliminator, arc eliminator coil, fault wave recording. The device is suitable for 380V ~ 66kV neutral point grounding or arc suppression coil (or parallel resistance) grounding power plant, substation. It collects the phase and zero-sequence voltage of several circuits, as well as the zero-sequence current of each outgoing line. When the system appears single-phase grounding, resonance and other faults, the device can accurately judge which grounding line is which connection or abnormal, and display and print, line selection accuracy up to 100%.

Function and characteristics of the device

● Up to 64 sampling channels, each channel up to 50kHz sampling and recording rate.

● Simple operation panel design, using 7'TFT true color LCD Chinese display screen, touch operation, large amount of information, easy to understand (with guidance information), simple operation.

● The device has perfect wave recording function, with fault recording function, record all the information of the whole process of line selection action, can store not less than 1000 group ground information fault recording fluctuation report, provide detailed and comprehensive data information for the analysis of grounding action behavior. Not lost after power failure.

● The device supports the background or the master station call recording function, support the distance according to the file list selective reading wave data.

● Fault recording data should distinguish device starting, tripping and wheel cutting; The recording data of trip action and turn-off should be stored preferentially.

● High line selection accuracy: direct grounding, gap grounding, arc grounding can be accurate line selection.

● Easy and comprehensive automation and remote device interface. Communication ports Include at least two dry Ethernet ports (up to four), two 485 ports, one CAN port, and one debugging port, supporting various protocols.

● With alarm, coding, tripping and other output modes, can adapt to the needs of the site, action delay time can be set by software. You can set the rotation function. You can control whether to enable the rotation function by input words.

● The device has perfect calibration function, B code calibration, network calibration, manual calibration can be.

● On-site CT ratio, starting voltage and other related setting parameters can be set by software, easy to adjust on site, as required.

● The device has perfect self-detection ability, self-debugging ability.

Selection of instructions