Auxiliary Voltage - ABB REF610 Technical Reference Manual

REF610 REF610
156
Feeder Protection Relay
Technical Reference Manual - ANSI Version
RS485 including DNP 3.0 protocol
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RS485 including DNP 3.0 protocol and arc protection input
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Auxiliary voltage

The relay requires a secured auxiliary voltage supply to operate. The internal power
supply of the relay forms the voltages required by the relay electronics. The power
supply is a galvanically isolated (flyback-type) DC/DC converter. When the
auxiliary voltage is connected, the green target LED (ready) on the front panel is lit.
For detailed information on power supply, refer to Table 5.2.4.-2.
The primary side of the power supply is protected with a fuse located on the printed
circuit board of the relay.
1MRS755535