Table Of Contents - GE STD15C Instructions Manual

DESCRIPTION .....................................................
APPLICATION .....................................................
CALCULATION OF SETTINGS .........................................
METHOD ....................................................
CURRENT TRANSFORMER CONNECTIONS ...........................
DETERMINATION OF CT TURNS AND TYPE
CURRENT TRANSFORMER RATIO ERROR ...........................
..
PERCENT SLOPE SETTING....................? ..............
I DETERMINATION OF CT TURNS AND
11 PERCENT RATIO ERROR ....................................
IA REPEAT-CT TURNS AND RELAY TAP SETTING ..................
IIA REPEAT
III PERCENT SLOPE SETTING .................................
RATINGS .........................................................
AUXILIARY RELAY CONTROL CIRCUIT ...........................
CHARACTERISTICS ..................................................
PICKUP AND OPERATING TIME .................................
OVERCURRENT UNIT PICKUP ...................................
PERCE
HARMONIC RESTRAINT CHARACTERISTICS ........................
BURDENS .........................................................
CONSTRUCTION. ...................................................
CURRENT TRANSFORMERS ............................................
THROUGH CURRENT RESTRAINT CIRCUIT .........................
DIFFERENTIAL
OVERCURRENT UNIT ..........................................
TARGET AND SEAL-IN UNIT ...................................
CASE ............................................................
RECEIVING, HANDLING, AND STORAGE ................................
ACCEPTANCE TESTS ................................................
VISUAL INSPECTION .........................................
MECHANICAL INSPECTION .....................................
ELECTRICAL TESTS ..........................................
TEST FACILITIES ...........................................
INSTALLATION PROCEDURE...................~ .....................
TESTS .....................................................
PICKUP ....................................................
HARMONIC CURRENT RESTRAINT ................................
THROUGH CURRENT RESTRAINT .................................
INSTANTANEOUS OVERCURRENT UNIT ............................
DROPOUT OF MAIN UNIT ......................................
LOCATION ........................................................
MOUNTING. .......................................................
ADJUSTMENTS .....................................................
RATIO MATCHING ADJUSTMENT .................................
UNBALANCE CURRENT MEASUREMENT .............................
PERCENT SLOPE SETTING .....................................
OPERATION. ......................................................
TARGETS ...................................................
DISABLING OF TYPE
MAINTENANCE .....................................................
CONTACT CLEANING ..........................................
PERIODIC TESTS ..................................................
PICKUP ....................................................
HARMONIC CURRENT RESTRAINT ................................
THROUGH CURRENT RESTRAINT .................................
RENEUAL PARTS ....................................................
Courtesy of NationalSwitchgear.com
GEK-45307
CONTENTS
....................................................
PERCENT RATIO ERROR ..........................
AND
T CHARACTERISTICS ...................
N AGE
CURRENT CIRCUIT ............................
OPERATING UNIT .......................................
.....................................................
RELAY ...............................
RELAY TAP SETTING . .
RELAY TAP SETTING .....
..............................
PAGE
15
15
15
15
16
16
16
17
17
17
17
18