The GL-15 and 16 series overcurrent relays from Chunxing Electric Technology are AC-operated protection relays that can be used to protect motors, transformers, and transmission lines from overload and short circuits. The GL-16 series overcurrent relays also have a pair of auxiliary signal contacts that can be used to send a signal in the event of an overload.
The GL‑15 and GL‑16 over‑current relays are AC protection devices for motors, transformers and transmission lines. They combine induction and electromagnetic elements to detect overload and short‑circuit conditions, and the GL‑16 version includes an additional signal contact for overload indication.
The manual describes the relay’s structure, adjustment of actuation current and time, wiring configurations (protruding front, protruding rear and embedded rear), installation guidelines, maintenance procedures, and the technical data such as rated current, frequency, power consumption, insulation strength and weight. This manual is written in Chinese.
| Rated frequency | 50 Hz |
|---|---|
| Power consumption | ≤ 15 VA at actuation current |
| Weight | ≤ 4 kg |
Adjust the current by turning the adjustment screws; first insert the spare screw into the required slot, then remove the other screw and insert it into the spare slot to avoid simultaneous adjustment screws in marked slots.
The signal contact can operate up to 220 V and switch DC 0.2 A or AC 1 A.
It is recommended to check the relay’s operation every six months.