GE 745 TRANSFORMER MANAGEMENT RELAY

GE Power Management 745 Transformer Management Relay
vii
TABLE OF CONTENTS
9.1.4 TOOLBAR.................................................................................................. 9-3
9.1.5 HARDWARE CONFIGURATION............................................................... 9-3
9.2 INSTALLATION & CONFIGURATION
9.2.1 745PC INSTALLATION ............................................................................. 9-5
9.2.2 STARTUP & COMMUNICATIONS CONFIGURATION............................. 9-6
9.3 USING 745PC
9.3.1 SAVING SETPOINTS TO A FILE.............................................................. 9-7
9.3.2 745 FIRMWARE UPGRADES ................................................................... 9-8
9.3.3 LOADING SETPOINTS FROM A FILE...................................................... 9-9
9.3.4 ENTERING SETPOINTS........................................................................... 9-9
9.3.5 VIEWING ACTUAL VALUES................................................................... 9-11
10. COMMISSIONING
10.1 GENERAL
10.1.1 INTRODUCTION ..................................................................................... 10-1
10.1.2 TESTING PHILOSOPHY......................................................................... 10-1
10.1.3 SAFETY PRECAUTIONS........................................................................ 10-2
10.1.4 CONVENTIONS....................................................................................... 10-2
10.2 TEST EQUIPMENT
10.2.1 TEST SETUP........................................................................................... 10-3
10.3 GENERAL PRELIMINARY WORK
10.3.1 DESCRIPTION ........................................................................................ 10-4
10.3.2 DIELECTRIC STRENGTH TESTING ...................................................... 10-5
10.4 LOGIC INPUTS & OUTPUT RELAYS
10.4.1 LOGIC INPUTS........................................................................................ 10-6
a PROCEDURE.......................................................................................... 10-6
10.4.2 OUTPUT RELAYS................................................................................... 10-7
a PROCUDURE:......................................................................................... 10-7
10.5 DISPLAY, METERING, COMMUNICATIONS, ANALOG
OUTPUTS
10.5.1 DESCRIPTION ........................................................................................ 10-8
10.5.2 CURRENT INPUTS ................................................................................. 10-8
10.5.3 VOLTAGE INPUT .................................................................................... 10-9
10.5.4 TRANSFORMER-TYPE SELECTION ..................................................... 10-9
a AUTOMATIC TRANSFORMATION PERFORMED IN THE 745............. 10-9
b EFFECTS OF ZERO-SEQUENCE COMPONENT REMOVAL ............. 10-10
10.5.5 AMBIENT TEMPERATURE INPUT....................................................... 10-11
a BASIC CALIBRATION OF RTD INPUT................................................. 10-11
b DETAILED CALIBRATION OF RTD INPUT .......................................... 10-11
c AMBIENT TEMPERATURE BY MONTHLY AVERAGES...................... 10-12
10.5.6 ANALOG OUTPUTS.............................................................................. 10-13
10.5.7 TAP POSITION...................................................................................... 10-13
10.6 PROTECTION SCHEMES
10.6.1 WARNING.............................................................................................. 10-14
10.6.2 HARMONIC RESTRAINED PERCENT DIFFERENTIAL ...................... 10-14
a MINIMUM PICKUP ................................................................................ 10-14
b VERIFICATION OF LOCAL RESET MODE .......................................... 10-15
c VERIFICATION OF REMOTE RESET MODE....................................... 10-15
d VERIFICATION OF SOLID STATE OUTPUT........................................ 10-15
e BASIC OPERATING TIME .................................................................... 10-16
f SLOPE MEASUREMENTS.................................................................... 10-16
g
SLOPE KNEEPOINT ............................................................................. 10-17
h 2nd HARMONIC RESTRAINT............................................................... 10-18
i 5th HARMONIC RESTRAINT................................................................ 10-18
j ENERGIZATION DETECTION SCHEME.............................................. 10-19