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D400 Substation Data Manager User's Manual 65
5.2 Power Connections
The D400 accepts power connections through two terminal blocks on the rear panel:
• Terminal block TB1 is reserved for connecting power from one or two external
sources to the D400.
• Terminal block TB2 provides contact closure outputs for power supply fail and system
fail alarms.
Wiring Requirements
The supply wiring for the D400 must be a minimum of 18 AWG (0.79 mm²), 3-conductor
cable with an external insulation jacket, and a minimum certified voltage rating of 600 V.
The protective conductor must be minimum 16 AWG (1.3 mm²) wire with (green-&-yellow)
insulation. Recommended conductor size is 12 AWG.
The wires must be terminated with an insulated #6 Forked Terminal.
The clear plastic protective barrier provided with the terminal strip connector must be in
place once wiring of the mains is completed.
Protective Earth
Terminal
Power Supply
Connections
Power Supply
Alarms