System Fail Alarm - GE Multilin D400 Instruction Manual

To connect the Power
Fail contact closure

System fail alarm

86
The back panel contact closure indicator or audible alarm can be wired to operate as
follows:
• Lit when a power failure has occurred
• Lit when power is present
The Power Fail contact closure provides three contacts (terminals 1, 2 and 3) on terminal
block TB2.
Contact closure rated for 0.1 A @ 300 V maximum.
1. Remove the terminal block protective plastic cover.
2. Wire a lamp or audible alarm to terminals 1, 2 or 3 on terminal block TB2 as follows
(see figure):
To enable the indicator when power is...
Absent
Present
For proper connection, the recommended tool torque settings for power terminal
screws are 10.8 in-lb [1.22 Nm]. A Phillips (#1) screwdriver tip is recommended.
3. Replace the terminal block protective plastic cover.
Figure 50: Power Fail Alarm Connection
TB2
Light ON Light ON
after failure when operational
The D400 includes a System Fail contact closure to provide an external indication of
system status. The System Fail alarm is also indicated by the CPU Ready LED on the front
panel of the main module turning off.
The indicator or audible alarm can be wired to operate as follows:
• ON when system failure has occurred
• ON when system is functioning properly
GE INFORMATION
Wire the lamp between...
Terminals 1 and 2
Terminals 2 and 3
Power
Fail
Station Battery / Power Source
D400 SUBSTATION GATEWAY INSTRUCTION MANUAL
CHAPTER 5: POWERING UP THE D400
System
Fail