8-4 MIB High Impedance Bus Differntial Relay GEK-106426B
8.4 WIRING AND NECESSARY EQUIPMENT 8 RELAY COMMISSIONING
8
8.4WIRING AND NECESSARY EQUIPMENT
Necessary equipment:
• 1 AC current source.
• 1 DC voltage power supply.
• 1 timing device.
• 1 Multi-meter.
Optionally, it is advisable to have a PC available, with the ENERVISTA MII SETUP software installed.
Relay wiring diagram.
Connect the relay as shown in Figure 8–1:
For safety reasons, the external protection earth terminal should be securely grounded.
Supply the unit through terminals H1 and H2 at the rated DC voltage.
Figure 8–1: TEST CONNECTIONS FOR MIB RELAY
MIB
H1
H2
H5
H6
Phase MIH Module
X Y
A
C1 C2
B C3 C4
C C5 C6
NOTE: Terminals for current injection
Iac
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