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PUB 50413
D64RPBH13 SERIES B1 GROUND FAULT RELAY
Revision 2
September, 2009
Page 7
Table 2: Ground Fault Trip Level
As indicated in the General Description, it is recommended that the ground fault TRIP LEVEL setting be
kept as close to the charging current as possible. This will provide maximum safety for operating
personnel and equipment protection. On resistance grounded systems, the TRIP LEVEL setting should
be set lower than 20% of the Neutral Grounding Resistor let-through current.
If the measured ground fault current exceeds the TRIP LEVEL setting, the output circuit breaker will trip
after the pre-selected TRIP DELAY.
2.2.3
TRIP INHIBIT MODE
TRIP INHIBIT is described under the glossary of terms. The setting of DIPswitch 11 determines if TRIP
INHIBIT is disabled or enabled. This is shown in Table 3.
Table 3: Trip Inhibit Mode
DIPSWITCH
SETTINGS
TRIP
INHIBIT
MODE
11
L=LEFT
R=RIGHT
L
* DISABLED
R
ENABLED
* Factory Setting
DIPSWITCH
SETTINGS
LEVELS WHEN USING C311CTs
WITH 500:1 TURNS RATIO
LEVELS WHEN USING C311CTs
WITH 10,000:1 TURNS RATIO
5
6
7
8
9
TRIP LEVEL
IN AMPS
INHIBIT LEVEL
IN AMPS
(When INHIBIT is
Enabled)
TRIP LEVEL
IN AMPS
INHIBIT LEVEL
IN AMPS
(When INHIBIT is
Enabled)
L=LEFT
R=RIGHT
L
L
L
L
L
* 2.5
10
*
50
200
L
L
L
L
R
3
10
60
200
L
L
L
R
L
3.5
10
70
200
L
L
L
R
R
4
10
80
200
L
L
R
L
L
4.5
10
90
200
L
L
R
L
R
5
20
100
400
L
L
R
R
L
6
20
120
400
L
L
R
R
R
7
20
140
400
L
R
L
L
L
8
20
160
400
L
R
L
L
R
9
20
180
400
L
R
L
R
L
10
20
200
400
L
R
L
R
R
12.5
50
250
1000
L
R
R
L
L
15
50
300
1000
L
R
R
L
R
17.5
50
350
1000
L
R
R
R
L
20
50
400
1000
L
R
R
R
R
22.5
50
450
1000
R
L
L
L
L
25
50
500
1000
R
L
L
L
R
27.5
50
550
1000
R
L
L
R
L
30
100
600
2000
R
L
L
R
R
35
100
700
2000
R
L
R
L
L
40
100
800
2000
R
L
R
L
R
45
100
900
2000
R
L
R
R
L
50
100
1000
2000
R
L
R
R
R
55
100
1100
2000
R
R
L
L
L
60
100
1200
2000
* Factory
Setting
* Factory
Setting