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DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . .
APPLICATION . . . . . . . . . . . . . . . . . . . . . .
TIME OVERCURRENT UNIT .... ':. ....
DIRECTIONAL UNIT ...............
INSTANTANEOUS UNIT .............
TARGET AND SEAL-IN UNIT ........
CONTACTS .......................
CHARACTERISTICS . . . . . . . . . . . . . . . . . .
PICKUP .........................
RESET (TIME OVERCURRENT UNIT) ...
OPERATING TIME .................
BURDENS ........................
CONSTRUCTION .....................
DIRECTIONAL UNIT ............... ll
CONTACTS ........................
TIME OVERCURRENT UNIT ........... 11
TARGET SEAL-IN UNIT ............. 12
INSTANTANEOUS UNIT ............. 12
ACCEPTANCE TESTS ................. 13
VISUAL INSPECTION .............. 13
MECHANICAL INSPECTION .......... 13
TOP UNIT (TOC) ............... 13
BOTTOM UNIT (DIR) ............ 13
TARGET AND SEAL-IN UNIT/
INSTANTANEOUS UNIT .......... 13
POWER REQUIREMENTS, GENERAL .... 14
TARGET AND SEAL-IN UNIT ........ 14
PICKUP AND DROPOUT TEST ...... 14
TIME OVERCURRENT UNIT .......... 15
CURRENT SETTING .............. 15
TIME SETTING ................. 16
PICKUP TEST ..................
TIME TEST .................... 16
GEK-49822
CONTENTS
DIRECTIONAL UNIT ............ 17
3
CURRENT POLARIZATION ...... 17
4
.....
POTENTIAL POLARIZATION .... 17
5
6
7
INSTALLATION . . . . . . . . . . . . . . . . . .
LOCATION ....................
7
MOUNTING .....................
8
CONNECTIONS .................
8
INSPECTION ..................
8
CAUTION ...................
OPERATION .....................
TARGET AND SEAL-IN UNIT ..... 18
TIME OVERCURRENT UNIT ....... 18
DIRECTIONAL UNIT ............ 19
CURRENT POLARIZATION ....... 19
POTENTIAL POLARIZATION .... 19
11
INSTANTANEOUS UNIT .......... 19
TARGET AND SEAL-IN UNIT ..... :;
TIME OVERCURRENT UNIT ....... 19
DIRECTIONAL UNIT ............ 19
SERVICING . . . . . . .........................
TIME OVERCURRENT UNIT ....... 20
DISK AND BEARINGS ......... 20
CONTACT ADJUSTMENT ........ 20
AND ADJUSTMENTS .......... 20
DIRECTIONAL UNIT ............ 21
BEARINGS ..................
CUP AND STATOR ............ 21
CONTACT ADJUSTMENTS ....... 21
BIAS TORQUE ADJUSTMENT .... 22
CLUTCH ADJUSTMENT ......... 22
16
INSTANTANEOUS UNIT .......... 23
CONTACT CLEANING .......... 23
2
PAGE
ROUTINE
. . . . . . . . . . . . . . . . . .
17
21
23
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