Ningbo市海曙巨龙电气厂 Manuals

Julong WCK-7021/7022/7023 Capacitor Protection Monitoring Device Technical Manual

The WCK-7021/7022/7023 series is a capacitor protection and monitoring device designed for neutral‑grounded or arc‑suppressor grounded systems up to 35 kV. It provides two‑stage over‑current protection, zero‑sequence grounding protection, over‑voltage, low‑voltage, and additional functions such as imbalance voltage/current, bridge‑difference current, and differential voltage protection depending on the model.

The unit uses a modular, distributed architecture with a 32‑bit MCU, CAN or RS‑485 communication, and a large LCD panel for real‑time display of voltage, current, power, frequency, and alarms. Settings are adjusted via the built‑in menu, and the device supports remote telemetry, signaling, and control. This manual is written in Chinese.

Covers: Overview of WCK-7000 series devices · WCK-7021/7022/7023 device overview · Technical data and specifications · Hardware principle and module description · Panel and terminal description · Protection and measurement functions