Page 267 - IRSEM_Main Book

Example of Fault
Fault Name Ref: Fault Information Momentary Confirmed
Message
Power Supply
Use analog voltage monitoring where LVR is not
16 Power Supply Failure Alarm RDSO M C (120 Sec) Failure & Power
provided.
Supply Restored
17 Fuse Blown Off (Additional
Hardware to be used to RDSO Additional hardware to be used to detect Fuse Failure. C
Detect Fuse Failure)
18 ELD Detected Low Earth Leakage
Insulation of Supply appeared in 110V
(Potential Free Contact of RDSO Potential free contact of ELD. C AC Supply, Earth
ELD to be Wired as Input to Leakage
Datalogger) disappeared in
110V AC Supply
19 Route not set when
Operation is Valid giving the
Sequence of Relay
Operations.
(1. Possible in case of panels
where button/switch relays
pick up with operation of
GNR, UNR are Up, EGGNR is Dn then after given time
button/switch even-though RDSO C Route Failure
the operating conditions are interval if HR is in down then check the Route.
not favourable
2. Sequence of relays shall be
provided by railways
3. Not possible for switch
type non route setting type
panels)

Chapter 11: Dataloggers and Predictive Maintenance Systems Page 228 of 535