Key facts
- Manuals
- 1
- Languages
- ZH
- Last added
- 2012-02-22
Featured REX manuals
ABB REX 521 Feed Line and Motor Protection Relay Operation Manual
This manual introduces the REX 521 feed line and motor protection relay, describing its purpose, safety requirements, and basic features such as the LCD HMI, multi‑processor architecture, and AC current/voltage transformer inputs. It also lists related documents and revision history.
The guide details HMI characteristics, button functions, menu navigation, parameter settings, LED indicators, and various test modes (I/O, IRF, function module). Safety information, self‑test procedures, and troubleshooting tips are included to ensure proper installation and operation. This manual is written in Chinese.
Covers: About This Manual · Safety Information · Introduction · HMI Features · Button Functions · Menu Overview
Latest REX manuals
ABB REX 521 Feed Line and Motor Protection Relay Operation Manual
User Manual 39 pages · 6.1 MB · ZHThe ABB REX 521 operation manual provides safety guidelines, HMI usage, configuration, testing procedures, and troubleshooting for the feed line and motor…
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in REX manuals
What safety precautions are required when installing the REX 521 relay?
Installation must be performed by qualified electricians, the device must be properly grounded, and all national and local electrical safety regulations must be followed.
From: ABB REX 521 Feed Line and Motor Protection Relay Operation Manual
How can the language be changed on the HMI?
The language can be changed by using a specific button combination on the front panel.
From: ABB REX 521 Feed Line and Motor Protection Relay Operation Manual