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PUB 50413
D64RPBH13 SERIES B1 GROUND FAULT RELAY
Revision 2
September, 2009
Page 18
TABLE 1 – CIRCUIT BREAKER TRIP CONTACT STATES
STATE OF CIRCUIT BREAKER TRIP CONTACTS UNDER VARIOUS OPERATING CONDITIONS
WITH DIPSWITCH 12 IN SELECTED POSITIONS
OPERATING
DIPSWITCH 12 IN LEFT POSITION
NON-FAILSAFE MODE
NON-FAILSAFE
(LEFT)
DIPSWITCH 12 IN RIGHT POSITION
FAILSAFE MODE
FAILSAFE
(RIGHT)
CONDITIONS
CB TOGGLE
POSITION
11
14
11
12
CB TOGGLE
POSITION
11
14
11
12
1. CONTROL POWER OFF
TRIPPED
TRIPPED
2. CONTROL POWER OFF
NORMAL
NORMAL
3. CONTROL POWER ON
TRIPPED
TRIPPED
4. CONTROL POWER ON
NORMAL
NORMAL
5. LOSS OF CONTROL
POWER
NORMAL
TOGGLE
TRIPS
6. CONTROL POWER ON
FAULT CURRENT ABOVE
TRIP SETTING
NORMAL
+ Time Delay
TRIPPED
+ Time
Delay
=
+ Time
Delay
=
NORMAL
+ Time Delay
TRIPPED
+ Time
Delay
=
+ Time
Delay
=
7. CONTROL POWER ON
FAULT STILL ON SYSTEM
ATTEMPT TO RESET CB
TRIP FREE
TOGGLE
REMAINS
TRIPPED
TOGGLE
REMAINS
TRIPPED
8. CONTROL POWER ON
FAULT CLEARED
NO RESET
TRIPPED
TRIPPED
9. CONTROL POWER ON
FAULT CLEARED
RESET CB TOGGLE
NORMAL
NORMAL
10. CONTROL POWER OFF
AFTER GROUND FAULT
TRIP, NO RESET
TRIPPED
TRIPPED
11. CONTROL POWER OFF
AFTER GROUND FAULT
TRIP, RESET CB TOGGLE
NORMAL
NORMAL
12. CONTROL POWER
RESTORED, FAULT
STILL ON SYSTEM,
RESET CB TOGGLE
NORMAL
+ Time Delay
TRIPPED
+ Time
Delay
=
+ Time
Delay
=
NORMAL
+ Time Delay
TRIPPED
+ Time
Delay
=
+ Time
Delay
=