The XJ Group WDR-820 series microcomputer capacitor protection and measurement device manual provides specifications, installation, operation, and…
The WDR-820 series microcomputer capacitor protection and measurement device is designed for parallel capacitor banks operating at 66 kV or lower. It features a 32‑bit floating‑point DSP, high‑precision 16‑bit A/D conversion, graphic LCD, and a real‑time multitasking OS, offering integrated protection and measurement functions for harsh environments.
The manual covers technical specifications, hardware description, protection principles, wiring diagrams, human‑machine interface, debugging procedures, commissioning notes, setting adjustments, communication protocols (IEC‑60870‑5‑103 or MODBUS), storage, warranty, ordering information, and detailed appendices with wiring and circuit diagrams. This manual is written in Chinese.
| Rated power supply voltage | DC220V, DC110V, AC220V |
|---|---|
| Rated AC voltage | Phase voltage 100/3 V, Zero‑sequence voltage 100 V, Current 5 A or 1 A |
| Operating temperature range | -25 °C ~ +55 °C |
| Relative humidity (operating) | Up to 80 % RH |
| Normal power consumption (protection power supply) | ≤ 12 W |
| Measurement accuracy (analog signals) | ±0.2 % of rated value |
The device can use IEC‑60870‑5‑103 or MODBUS protocols with dual RS‑485 interfaces.
The device can store at least 100 recent event and operation reports.
It is intended for parallel capacitor banks at 66 kV and below.
The device operates from –25 °C to +55 °C.