GE MDP User Manual

GE Power Management MDP Digital Time Overcurrent Relay
i
TABLE OF CONTENTS
1. INTRODUCTION
1.1 PRODUCT DESCRIPTION........................................................................ 1-1
1.2 ORDER CODES........................................................................................ 1-2
1.3 APPLICATION ........................................................................................... 1-4
1.4 INTERFERENCE SUPPRESSION GROUND CONNECTION.................. 1-5
1.5 TECHNICAL SPECIFICATIONS................................................................ 1-6
1.6 RANGES AND SETTINGS ........................................................................ 1-7
2. OPERATING
PRINCIPLES
2.1 INPUTS...................................................................................................... 2-1
2.2 EXTERNAL INPUTS.................................................................................. 2-1
2.3 COMMUNICATIONS PORT ...................................................................... 2-1
2.4 MEASUREMENT....................................................................................... 2-3
2.5 INVERSE TIME UNIT................................................................................ 2-3
a 51 INVERSE (5 A RATED RELAYS)...................................................... 2-4
b BS142 INVERSE (1 A RATED RELAYS)............................................... 2-4
c 53 VERY INVERSE ................................................................................ 2-4
d 77 EXTREMELY INVERSE .................................................................... 2-4
e 66 INVERSE LONG TIME ...................................................................... 2-4
2.6 INSTANTANEOUS UNIT......................................................................... 2-10
2.7 CHANGING SETTINGS........................................................................... 2-10
2.8 SETTINGS............................................................................................... 2-11
a PICKUP TOC........................................................................................ 2-11
b PICKUP IOC......................................................................................... 2-11
c TIME DIAL ............................................................................................ 2-11
d CURVE SELECTION............................................................................ 2-11
e IOC DELAY........................................................................................... 2-12
f COMMUNICATIONS ADDRESS.......................................................... 2-12
g
OUTPUT CONTACT CONFIGURATION ............................................. 2-12
2.9 DISPLAY AND RESET............................................................................ 2-13
2.10 SELF-TEST AND ERROR ROUTINES ................................................... 2-14
3. CONSTRUCTION
3.1 DESCRIPTION .......................................................................................... 3-1
3.2 DISPLAYS ................................................................................................. 3-3
3.3 RECEIVING, HANDLING, AND STORAGE .............................................. 3-3
4. INSTALLATION AND
MAINTENANCE
4.1 INSTALLATION ......................................................................................... 4-1
4.2 PERIODIC CHECKS AND ROUTINE MAINTENANCE............................. 4-5
5. PERIODIC &
ACCEPTANCE TESTS
5.1 DESCRIPTION .......................................................................................... 5-1
5.2 VISUAL INSPECTION ............................................................................... 5-1
5.3 INVERSE TIME UNIT................................................................................ 5-1
a PHASE PICKUP CALIBRATION VERIFICATION.................................. 5-1
b VERIFICATION OF OPERATING TIME................................................. 5-2
c VERIFICATION OF TIME DIAL.............................................................. 5-2
5.4 INSTANTANEOUS UNIT........................................................................... 5-3
a VERIFICATION OF PICKUP .................................................................. 5-3
b VERIFICATION OF OPERATING TIME................................................. 5-3
5.5 GROUND UNIT.......................................................................................... 5-3
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GE MDP Specifications

General

Brand	GE
Model	MDP
Category	Relays
Language	English