PUB 51079
D64RP14 SERIES A2 DIGITAL GROUND FAULT RELAY
Revision 1
May, 2005
Page 6
The two secondary terminals of the external CT are to be connected to terminals T1 and T2 of
the D64RP14.
Chassis Ground
Chassis ground is the ground to which all of the non-current carrying metal equipment is
connected/bonded. Typically, equipment grounding is provided by means of a ground bus. A
solid connection is to be made from terminal N- of the D64RP14 to the nearest chassis
ground to ensure the relay complies with the specified Electromagnetic compatibility (EMC)
standards.
2.2
DIPSWITCH SETTINGS
FOR MAXIMUM SAFETY THE SETTINGS DESCRIBED IN THIS SECTION SHOULD BE MADE
WITH CONTROL VOLTAGE REMOVED FROM THE D64RP14 RELAY.
The DIPswitches are mounted inside of the relay and are accessible through the front cover. It is
recommended that all of the DIPswitches be set at one time.
Should it be necessary to make changes to the DIPswitch settings when the D64RP14 relay is
energized, this can be done without having any adverse effect on the performance of the relay.
Please Refer to Table 1. This provides a list of the 8 DIPswitches, the function of each group, and the
values related to each setting. The DIPswitches are numbered from 1 to 8 left to right.
TABLE 1 – DIPSWITCH SETTINGS
In the table below ‘D’ denotes down and ‘U’ denotes up.
Switch
Function
Set to
Meaning
1 2 3
Ground fault trip current limit D U U
D U D
D D U
D D D
♦
U U U
U U D
U D U
U D D
1.0 Amps
1.5 Amps
2.0 Amps
2.5 Amps
4.0 Amps
6.0 Amps
8.0 Amps
10.0 Amps
4 5 6
Trip time delay
D D D
♦
D D U
D U D
D U U
U D D
U D U
U U D
U U U
0.5 seconds
1.0 seconds
1.5 seconds
2.0 seconds
2.5 seconds
5.0 seconds
7.5 seconds
10.0 seconds
7 8
Trip relay operation mode
D D
♦
D U
U D
Non-failsafe, continuous operation
Failsafe, continuous operation
Pulsed Auto reset operation (pulse turns
off 3 seconds after G/F removed)
♦
FACTORY SETTING
2.2.1
GROUND FAULT TRIP CURRENT LEVEL - DIPSWITCHES 1, 2, & 3
The ground fault TRIP LEVEL range is 1 Amp - 10 Amps. Table 1 provides a listing of the eight TRIP
LEVEL settings, which can be made on DIPswitches 1, 2, & 3.
