The manual provides installation, operation, adjustment, troubleshooting, and warranty information for the JD-5(B) motor protector.
This document describes the JD-5(B) electric motor protector, a device that offers phase‑loss and overload protection for three‑phase motors. It outlines the installation conditions, mechanical structure, working principle, and technical parameters such as rated voltage, current range, and installation category.
The manual also covers wiring diagrams for AC220V and AC380V supply, step‑by‑step adjustment of the setting current, common fault symptoms with troubleshooting methods, and warranty terms. It is intended for qualified personnel who install, commission, and maintain the protector. 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 (relay) | AC‑15: 60 000 cycles; DC‑13: 30 000 cycles |
| Mechanical life (relay) | 300 000 cycles |
| Withstand voltage (50 Hz) | 2500 V rms for 1 min |
Turn the two adjustment knobs clockwise to the stop, then power on the device. After the motor runs, slowly turn the right‑hand knob counter‑clockwise until the overload indicator just begins to flash, then turn it slightly clockwise; the knob position at which the overload light stops flashing for one minute is the initial setting.