The BHQ BHQ‑S‑C Motor Comprehensive Protector manual provides installation, operation, adjustment, maintenance and fault‑troubleshooting instructions.
This manual describes the BHQ‑S‑C motor comprehensive protector, a device that protects three‑phase motors from overload, phase‑loss and imbalance. It outlines the product’s structure, working principle, technical parameters, installation requirements, wiring diagrams and safety precautions.
Key features include adjustable trip current, three status indicator lights (run, overload, phase‑loss), automatic reset on power loss, and compliance with GB14048.4. The guide explains how to set the trip current, connect the device to an AC‑220V/380V supply, perform regular maintenance, and diagnose common faults such as failure to start or unexpected trips. This manual is written in Chinese.
| Rated voltage | AC220V±10% or AC380V±10% |
|---|---|
| Rated current range | 0.5 A ~ 100 A |
| Rated frequency | 50 Hz |
| Main circuit usage category | AC‑3, AC‑4 |
| Trip level | 10 A; 3 P |
| Electrical life of relay | AC‑15 (60 000 cycles), DC‑13 (30 000 cycles) |
| Withstand voltage | 2500 V rms for 1 min |
The three lights indicate running status, overload condition, and phase‑loss condition respectively.