Introduction - ABB REU 513 User Manual

ABB Substation Automation
Products and Systems
1MRS750886-MUM
User's Guide

Introduction

About this manual
The purpose of this manual is to provide the user with thorough information on the
relay REU 513 and its applications. The manual consists of three parts, the first of
which, part A, instructs the user in controlling the relay functions. Part B is a more
detailed description of the features, operation and applications of the relay, whereas
part C concentrates on service.
Instructions for installation are found in separate "Installation Manual".
The use of the relay
The three-phase voltage relay REU 513 is intended to be used for overvoltage and
undervoltage protection and supervision in distribution substations. It can also be
used for protection of generators, motors and transformers.
The relay features two over- and two undervoltage protection functions that evaluate
the fundamental wave of the three phase-to-phase voltages but can also be
programmed to evaluate single phase-to-phase voltage. One of the undervoltage
stages can alternatively be set to evaluate the positive-phase-sequence voltage.
The protection relay REU 513 is based on a microprocessor environment. A self-
supervision system monitors continuously the operation of the relay.
Local control of the protection relay is carried out with a portable computer
connected to the front connector.
Features
• Overvoltage and undervoltage protection
• Single- or three-phase operation
• High-set overvoltage stage with definite-time or inverse definite minimum time
(IDMT) characteristic
• Low-set overvoltage stage with definite-time or IDMT characteristic
• High-set undervoltage stage with definite-time or IDMT characteristic
• Low-set undervoltage stage with definite-time or IDMT characteristic
• Positive-phase-sequence protection
• Settable drop-off/pick-up ratio for low-set overvoltage and low-set undervoltage
stages
• Circuit-breaker failure protection unit (CBFP)
• Disturbance recorder
• All settings are modified with a personal computer
• Settings are stored into non-volatile memory and remain even in case of power
supply failure
• Two normally open power output contacts
• Two change-over type signal output contacts
• Output contact functions freely configurable for desired operation
• Three accurate voltage inputs
• Galvanically isolated binary input with a wide input voltage range
REU 513
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