Power Supply Alarms; Power Fail Alarm - GE Multilin D400 Instruction Manual

CHAPTER 5: POWERING UP THE D400

Power supply alarms

Power fail alarm

D400 SUBSTATION GATEWAY INSTRUCTION MANUAL
Power Source Connection
Two External DC First source connected
Power Sources to SUPPLY1 terminals.
with Optional Second source
Redundant D400 connected to SUPPLY2
DC Power terminals.
Converter
3. Connect protective earth wire to the Protective Earth terminal
The terminal is an M5 threaded stud with M5 nut and washers. The recommended
order for stacking the washers on the chassis is: flat washer, ground wire ring terminal,
toothed washer, M5 nut.
For proper transient protection, the recommended tool torque settings for the M5 nut
is 18.1 in-lb [2.04 Nm].
It is recommended to terminate 12 AWG green & yellow wire with a Panduit PV10-14R
or equivalent ring terminal.
4. Verify that Power LEDs on the front panel of the power supplies and the D400 main
module are lit.
5. Replace the terminal block protective plastic cover.
The D400 includes connections for two alarm outputs:
• Power Fail to indicate one of the two power supplies or one of the two power feeds
has failed
• System Fail to indicate system operation status
Terminal block TB2 on the rear panel of the D400 provides contact closure outputs for
connection to an external circuit, for example, to connect an external LED indicator or
audible alarm.
The contact closure used for alarm outputs is a solid-state photo-MOS device. Contact
closure output ratings at maximum ambient temperature are:
• Continuous current: 0.1 A continuous at 300 VAC / 300 VDC
• Peak current: 0.28 A peak for 10 ms
• Maximum on resistance: 35 ohm
• Dielectric isolation: 2 kV
The Power Fail contact closure provides for an external indication upon loss of power. The
Power Fail alarm is also indicated by the Power LED on the front panel of the power supply
turning off.
The front panel Power indicator LED is lit when any one power supply is ON, but does not
indicate that any one power supply has failed.
Wiring Diagram
DC Power Source #1
RMS
GE INFORMATION
Supply 1 Supply 2
+
-
+
DC Power Source #2
-
on the rear panel.
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