Key facts
- Brand
- NARI-RELAYS
- Model
- RCS-943A
- Category
- Other
- Documents
- 2
- Languages
- ZH
- Last added
- 2012-03-14
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NARI-RELAYS RCS-943AU High-Voltage Transmission Line Protection Device Technical and User Manual
The NARI-RELAYS RCS-943AU is a digital, micro‑computer‑based protection device for 110 kV transmission lines. It provides fast primary protection with differential and zero‑sequence functions, plus a full set of backup protections such as distance, over‑current, low‑frequency and low‑voltage protection.
The manual covers application scope, hardware and software principles, setting and adjustment procedures, operation instructions, and detailed debugging guidelines, including communication interface configuration and fiber‑optic link testing. This manual is written in Chinese.
NARI-RELAYS RCS-943A specifications
| Mechanical dimensions | 482 mm × 177 mm × 291 mm |
|---|---|
| Operating temperature range | 0 °C – 40 °C (normal), -10 °C – 50 °C (extreme) |
| Storage temperature range | -25 °C – 70 °C |
| DC power supply | 220 V, 110 V |
| AC voltage rating | 3/100 (Un) |
| AC current rating | 5 A, 1 A |
| Frequency | 50 Hz / 60 Hz |
| Normal power consumption | < 35 W |
| Trip power consumption | < 50 W |
Source: NARI-RELAYS RCS-943AU High-Voltage Transmission Line Protection Device Technical and User Manual
All NARI-RELAYS RCS-943A documents by type
Instruction set, parameters and examples for configuring or programming the device.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What communication protocols does the RCS‑943A support?
It supports the 1E080870‑5‑103 protocol and the LFP protocol, selectable in the device parameters.
From: NARI-RELAYS RCS-943A Communication Protocol Specification
How is the communication address configured?
The communication address is set in the device parameter menu and cannot be modified remotely.
From: NARI-RELAYS RCS-943A Communication Protocol Specification
What is the mechanical size of the RCS-943AU device?
The device measures 482 mm × 177 mm × 291 mm.
From: NARI-RELAYS RCS-943AU High-Voltage Transmission Line Protection Device Technical and User Manual