PUB 50413
D64RPBH13 SERIES B1 GROUND FAULT RELAY
Revision 2
September, 2009
Page 13
Output Circuit breaker:
Contacts:
Maximum UL rating: ............................................................... 3 A @ 250 V ac, resistive
EN 60947-5-1 rating: .......................... 1 A @ 125 Vac, Utilization category AC-12
Maximum fusing under EN 60947-5-1: ......................................................... 10 A
Endurance: ....................................................................Greater than 10,000 operations
Dielectric strength .............................................................................. 500 V ac at 60 Hz
Configuration .................................. Voltage free form "C" 1 N.O. - 1 N.C. (3 terminals)
Operating Mode (Selected on DIPswitch 12) ......................................................................... Non-Failsafe
Failsafe
Inhibit Level (Enabled - Disabled selected on DIPswitch 11)
With C311CT current transformer 500:1 ratio ............................... 10 to 100 Amps
With C311CT current transformer 10,000:1 ratio ............................... 200 to 2000 Amps
(Based on selected Trip Level setting)
Inhibit Time .......................................................................................................................... Instantaneous
Functional Test.............. Continuous monitoring of the external CT’s connection; Open Circuit causes trip
Local Test ................................................................................. Double click Push button on front of relay
Causes a G/F trip by voltage injection onto the CT input circuitry
Remote Test .......................... One press of SPST N.C. momentary contact Push button, 3 A @ 10 V ac
Causes an external CT Open Circuit trip by opening up the connection to the CT
Local Reset .............................................................................................Toggle Operated Circuit Breaker
Reset mode ................................................................................................................................... Manual
Ground Fault Circuit:
Ground Fault Trip Delay ................................................................25 milliseconds - 1.00 Second
Setting within Range ....................................................................... DIPswitches on front of relay
Zone Grading Backup Delay ........................................................ 25 milliseconds – 1.00 Second
Setting within Range ....................................................................... DIPswitches on front of relay
Ground Fault Trip Current Level ................................................. 2.5 - 60 Amps (using 500:1 CT)
50 - 1200 Amps (using 10,000:1 CT)
Setting within Range ....................................................................... DIPswitches on front of relay
Ground Fault Trip Inhibit Backup Delay ........................................................ Fixed at 1.2 Second
Frequency Response Range ..................................................................................... 45 - 200 Hz
Accuracy:
Trip current ...................................................................................... ±15% including CT accuracy
Trip current Repeat ............................................................................................................... ±1%
Trip time .......................................... -2/+5 ms or ±2.5% of G/F Trip Delay, whichever is greater
1
1
The ground fault detection mechanism has a “thermal” behavior for greatly reduced noise sensitivity: the
quoted delays are valid for sinusoidal currents exceeding the set point by > 10 times; for reduced current
excursions the delay increases as follows:
Current = 6 x set point:
add 3 ms
Current = 4 x set point:
add 8 ms
Current = 2 x set point:
add 20 ms
Current = 1.2 x set point: add 60 ms
