Power Supply Module - GE D90 Plus Instruction Manual

ELECTRICAL INSTALLATION

Power supply module

FASTPATH:
FASTPATH:
52
The power supply module provides power to the relay and supplies power for dry contact
input connections. It can be connected to any of the following standard power sources.
• DC power: 110 V DC, 125 V DC, 220 V DC, or 250 V DC.
• AC power: 115 V AC or 230 V AC.
Control power supplied to the relay must be connected to the matching power supply
range of the relay. If the voltage is applied to the wrong terminals, damage can occur.
Plus
The D90 system, like almost all electronic relays, contains electrolytic capacitors. These
capacitors are well known to deteriorate over time if voltage is not applied periodically.
Deterioration can be avoided by powering up the relay at least once a year.
The power supply module provides 48 V DC power for dry contact input connections and a
critical failure relay. The critical failure relay is a form-C that will be energized once control
power is applied and the relay has successfully booted up with no critical self-test failures.
If on-going self-test diagnostic checks detect a critical failure or control power is lost, the
relay will de-energize.
Figure 24: IRIG-B connection
Figure 25: Control power connection
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 3: INSTALLATION