Xu Ji WXJ-845S microcomputer troubleshooting column protection device

Xu Ji WXJ-845S microcomputer troubleshooting column protection device


WXJ-845S breakdown device is to meet the needs of various small photovoltaic power generation automation, on the basis of summarizing the years of power station automation system development, research experience, according to the enterprise demand, for the characteristics of power supply and distribution system, for power users, with cost-effective protection, measurement, control and communication of the new computer protection device, suitable for 10KV and below voltage level protection and measurement and control.The WXJ-845S troubleshooting device can be dispersed in the low-voltage switchgear or in a centralized panel in the control room.1.1 Reliable Product Performance Series device components are all military or industrial products, with high stability and reliability, stable operation in harsh industrial environment; series device hardware design adopts various isolation and shielding measures, software design adopts digital filtering technology and advanced protection algorithm and other anti-interference measures, greatly improve the protection; SoC solution, strong data processing, logical operation and information storage capability, fast operation speed and high reliability.Powerful protection function according to the protected interval, the device configuration different protection functions, can achieve reliable protection of the interval; flexible adapt to the different operation mode; with perfect measurement function, can complete the interval power point measurement, measurement accuracy of ± 0.5%; with perfect remote communication and remote control function, background remote breaker tripping / closing simple and reliable, station SOE resolution can reach 1ms.Powerful auxiliary functions to provide perfect TV abnormal detection, control circuit abnormal detection and hardware self-inspection function; to provide a powerful fault recording function, Record the latest 32 protection action reports and 32 event reports; flexible with fully enclosed chassis design, It can be installed separately, Can also group screen installation; flexible hardware selection, It can cooperate with all mainstream circuit breakers and operators; flexible and powerful communication functions: support both Rs485 serial communication mode and CAN2.0B communication mode; The communication statute supports the Modbus statute, Flexible automation system communication with other manufacturers; humanity: Chinese icon menu design, be easy to understand; Four-digit direction navigation disk, Fast and convenient operation; integrated chassis design, Maintenance is more convenient; Perfect hardware and software self-inspection function and adjustment-free circuit design, Commissioning is simpler; provide comprehensive equipment operation information and fault information record; provide PC-based auxiliary analysis software.


Xu Ji WXJ-845S microcomputer troubleshooting column protection device
n the key technical indexes
1) Set the time limit over the flow
Current fixed value: 0.1In- -20In Time fixed value: 0S- -60S
Sensitivity angle: 30o, 45o, 60o optional value error: <5%
2) Zero sequence overflow
Current fixed value: 0.1In- -20In Time fixed value: 0S- -60S
Fixed value error: <5%
3) Overvoltage and low pressure
Overvoltage setting value: 90V- -150V fixed value error: <5%
Low voltage setting value: 0V- -150V fixed value error: <5%
4) Overdue frequency and low frequency
Overfrequency fixed value: 48Hz- -55Hz
Low frequency fixed value: 46Hz-50Hz low voltage lock: 50V-100V
Lock of df / dt: 0.3Hz / s- - -10Hz / s value error: <5%
Frequency error: <0.01Hz current locking value: 0.1In-1.1In
Xu Ji WXJ-845S microcomputer troubleshooting column protection device