The 33rd China International Exhibition on Electric Power Equipment and Technology
Shanghai New International Expo Center (Hall N1 - N5, W4 - W5), PR China 2026 • 12 • 3 - 5

DONGGUAN QIANBO ELECTRONIC TECHNOLOGY CO., LTD.
N5J31
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HIGH VOLTAGE INSULATION MONITOR
MIR2500 is an intelligent insulation monitor designed for motors up to 12 kV. It adopts DC 2500 V highvoltage injection method to measure insulation resistance during poweroff status, realizing early warning of motor insulation degradation.
It measures insulation resistance within 1 MΩ100 GΩ, and calculates Polarization Index (PI) and Dielectric Absorption Ratio (DAR) for quantitative insulation aging evaluation. It supports residualcurrent monitoring, automatic charge discharging, abnormal poweron protection and selftest functions to guarantee operation safety.
The device provides Modbus RTU (RS485) and Modbus TCP (RJ45) communication interfaces. Four independent relay outputs are available for alarms. It supports manual, remote and scheduled measurement triggers, and stores up to 100 event records for predictive maintenance of industrial highvoltage motors.
INSULATION FAULT LOCATION SYSTEM
The IFLS600 insulation fault location system is designed for ITtype unearthed power systems. It consists of QB600L insulation monitor, QIFL12 fault locator and CT/KCT lowfrequency current transformers.QB600L continuously monitors system insulation resistance and distributed capacitance. When insulation drops below the alarm threshold, it sends positioning signals to the grid and triggers QIFL12 via RS485 ModbusRTU communication. QIFL12 collects lowfrequency fault current from up to 12 branches through matched current transformers to pinpoint faulty circuits accurately. More QIFL12 units can be added to expand monitoring capacity, maximum 16 locators supported.This system supports AC/DC IT systems up to 690 V, works for singlephase and threephase networks, and delivers stable performance even with frequencyconverter loads. It features LCD display, relay alarm outputs, antiinterference filtering, and RS485 communication for data uploading to host computer. DINrail mounting ma
RESIDUAL CURRENT MONITOR
The RCMX100 Residual Current Monitor pairs with precision CT residualcurrent transformers for ACgrounded power grids. It precisely measures branch earthfault residualcurrent values and judges fault status, transmitting data to host systems over RS485 ModbusRTU.
Capable of Type AC and Type A residualcurrent detection, it activates alarm relays once current exceeds preset limits. Parameters including residualcurrent threshold and action delay are set via panel keys. Manual test and reset functions are available. Its 1.3inch TFT screen displays trueRMS fault current and fault information.
Mounted on standard 35 mm DINrail, the device delivers strong antiinterference capability and high measurement accuracy. It supports multiunit networking, offering prealarm instantaneous output and delayed alarm output. A transparent cover avoids accidental touching. Auxiliary power supply is mandatory; it cannot operate automatically upon auxiliarypower loss.
思源黑体预加载(勿删): DONGGUAN QIANBO ELECTRONIC TECHNOLOGY CO., LTD.