This manual provides overview, operation, wiring, protection, and communication details for the SEC18C series soft starter used with three‑phase…
The SEC18C series electronic soft starter is designed for three‑phase cage‑type asynchronous motors. It reduces start‑up current, protects the motor and power network, and supports remote monitoring and control.
The manual covers three start modes (current‑limit, voltage‑ramp, voltage‑ramp + current‑limit), two stop modes, extensive protection functions, wiring diagrams, physical dimensions, and RS‑485/MODBUS communication for integration with PLCs or DCS systems. This manual is written in Chinese.
| Rated working voltage | AC380V, AC690V, AC1140V (±15% / –20%) |
|---|---|
| Rated current | 17 A ~ 1600 A (see selection table) |
| Motor power range (380 V version) | 7.5 kW ~ 870 kW |
| Protection functions | Over‑voltage, under‑voltage, missing‑phase, over‑current, overload (4 adjustable levels), bypass fault, silicon fault |
| IP rating | IP20 |
| Control power supply | AC220 V (±20% / –30%) or AC110 V selectable |
| Control power consumption | ≤ 5 W |