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ABB Modures LZ92-1 User Manual

ABB Modures LZ92-1
72 pages
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ASEA BROWN BOVERI
CH-ES 83-92.10 E
Edition May
1991
modures®
Static Distance Relays
Types
L291
, L292, LZ92-1
Instructions for Installation
and
Operation
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ABB Modures LZ92-1 Specifications

General IconGeneral
BrandABB
ModelModures LZ92-1
CategoryRelays
LanguageEnglish

Summary

DETERMINING THE SETTINGS

SELECTING THE OPERATING MODE

How to choose between different operating modes for various system grounding conditions.

SETTING THE STARTING UNITS

Configuration of overcurrent and underimpedance starting units for fault detection.

OVERCURRENT STARTING SETTINGS

Setting parameters for the overcurrent starting detection method.

UNDERIMPEDANCE STARTING SETTINGS

Setting parameters for the underimpedance starting detection method.

IMPEDANCE SETTINGS FOR RELAY ZONES

Procedures for calculating and setting impedance values for each distance relay zone.

DETERMINING DISTANCE ZONE REACHES

Steps for calculating the reach of each distance relay zone.

SETTING FACTORS M AND N

Calculating and setting impedance measuring range (m) and percentage setting (N).

INSTALLATION AND WIRING PROCEDURES

COMMISSIONING PROCEDURES

PRE-COMMISSIONING SETTING VERIFICATION

Performing checks from installation sections and setting the relay before energizing.

TESTING WITH FRONTPLATE BUTTONS

Performing functional tests by simulating faults using frontplate test buttons.

TESTING WITH EXTERNAL TEST SET

Procedures for connecting and using a test set for comprehensive relay verification.

OPERATION AND MAINTENANCE GUIDE

TROUBLE-SHOOTING GUIDE

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