GEK-106426B
MIB High Impedance Bus Differntial Relay
8-15
8 RELAY COMMISSIONING
8.15 ACCEPTANCE TEST FOR HIGH IMPEDANCE MODULE
8
8.15ACCEPTANCE TEST FOR HIGH IMPEDANCE MODULE
8.15.1 WIRING AND NECESSARY EQUIPMENT
Necessary equipment:
1 AC voltage source.
1 DC voltage power supply.
1 timer.
1 Multi-meter.
Typical wiring diagram:
(3000) B5177F1
(2000) B5177F2
(1000) B5177F3
8.15.2 CONTINUITY
Test equipment:
An Multimeter or continuity measurer with a maximum threshold of 110
Ω
.
Method:
Check for continuity between the grounded screw and any metallic point of the case that has no painting on it.
8.15.3 ISOLATION TEST
IMPORTANT
:
During all tests, the screw located on the rear of the relay must be grounded.
For verifying isolation, independent groups will be created, and voltage will be applied as follows:
2500 RMS volts will be applied
progressively
among all terminals in a group, short-circuited between them and the
case, during one second. In case the Hi-Pot device used to test the relay trips due to excessive consumption, apply the
test between each group and ground one at a time.
2500 RMS volts will be applied
progressively
between groups, during one second.
•
Group 1 (LATCHING RELAY contacts): A5 – A6 – A7 – A8– A9 – A10– A11 – A12– B1 – B2– B3 – B4– B5 – B6
– B7 – B8
•
Group 2 (LATCHING RELAY coils):
A1 – A4 – B9 – B12
•
Group 3 (Pushbutton):
C5 – C6 – C7 – C8
•
Group 4 (Analogical Group):
C10 – C11 – C12 – D6 – D7 – D8 – D2 – D3 – D4
Consumption will not be higher than 20 mA.
8.15.4 MEASURES
Latching relay Coil Resistor (HID module)
NOTE: Accuracy of 20%.
POWER SUPPLY
A1 – A3 TERMINALS
B10 – B12 TERMINALS
LO
340 OHM
340 OHM
HI
2K15
2K15
