The RealKing KSC-7118 manual explains features, wiring, settings, and installation for the generator over‑voltage and over‑current monitor.
The KSC-7118 is an intelligent monitor for small‑ to medium‑size generators that protects against over‑voltage, under‑voltage and three‑phase over‑current. It uses an industrial‑grade microcontroller with high reliability, fast response and strong anti‑interference capability.
The manual provides a schematic layout, principle of operation, technical specifications, wiring diagram, step‑by‑step adjustment procedures, and installation dimensions. Default protection values are preset, and users can modify voltage, current thresholds and timing via the set key and the four‑digit display. This manual is written in Chinese.
| Input voltage signal | PT100V (voltage transformer) and 230V phase voltage |
|---|---|
| Input current signal | CT5A (current transformer) 1~3 phase any |
| Output signal | Relay contacts: one NO, one NC, capacity 5A/220VAC 28VDC |
| Operating temperature | -10 °C ~ +50 °C |
| Relative humidity | ≤90 % |
| Maximum altitude | ≤2500 m |
Press the set key, use the “+” and “‑” buttons to adjust; when the first digit shows “1”, the range is 440 V ~ 550 V (default 500 V).
The factory defaults are: over‑voltage 500 V, detection time 1.0 s, recovery 120 s; over‑current 4 A, detection time 1.0 s, recovery 120 s; under‑voltage disabled.
Connect the secondary side (5 A) of the CT to the corresponding terminals; you may connect one, two, or three phases as needed.