This document is the user manual for WIC1, which introduces the features and characteristics of the product, usage methods, etc.
The WIC1 is a compact CT‑powered protection relay designed for medium‑voltage switchboards. It provides time‑over‑current, inverse‑time and earth‑fault protection functions with a sealed housing and high electromagnetic immunity.
The manual covers safety guidelines, handling, installation, wiring diagrams, user interface settings, technical data, commissioning procedures, maintenance tasks and product‑specific features such as current‑transformer selection and flag‑indicator connections.
| Frequency range | 45 Hz to 65 Hz |
|---|---|
| Nominal frequency | 50/60 Hz |
| Storage temperature range | -40 °C to +85 °C |
| Operating temperature range | -40 °C to +85 °C |
| Maximum operating altitude | 2000 m (up to 3000 m) |
| Flag indicator coil voltage | 24 V DC ±10 % |
The terminal block for CT connections is not a shorting block; CTs must be short‑circuited before loosening the terminals to avoid hazardous voltages.