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OVR-15, 27 & 38 LV cabinet Instruction Manual
8
C
OMMON TROUBLES AND TROUBLE SHOOTING
Table 4: Trouble shooting chart for OVR reclosers
(Please read this table in conjunction with the
approved/ as built wiring diagram)
Sr.
No.
Trouble /
Malfunction
Indication /
Observation
Possible Causes
Remedy / Trouble Shooting
1
Auxiliary Power
failure
No voltage across
auxiliary supply
terminals in LV Unit
-
External Auxiliary power
connection to LV Unit is
loosely connected
-
External Auxiliary Power
may be OFF
-
Properly connect the Auxiliary
Power supply cable to the
plug inside LV Unit
-
Check & correct the status of
the external power supply.
Voltage is present
across auxiliary
power terminals in LV
unit but cubicle light
& aux. power outlet,
heater(s), do not
have power.
Auxiliary Supply Mains MCB is
OFF
Switch ON the MCB for Auxiliary
Supply Mains
2
ACM/RER615
does not power
up even after
main Aux. MCB
is ON & Aux
Supply is
available for
more than 60s
Charging device is
defective ( its LED is
not glowing
continuously)
If LED is blinking.
Charging device needs to be
reprogrammed.
If LED is not Glowing
Charging device is defective.
Consult ABB representative.
Check the resistance between
NTC + & NTC
–
for the values
in between 8 to 10 k.Ohm @
35⁰C Ambient.
If found open or no values of
resistance could be measured,
temperature sensing cable is
defective. Consult ABB
representative.
None of the LEDs
(RED/GREEN) on
ACM glow
MCB for ACM is OFF
Switch ON the MCB for ACM
No LEDs on RER615
HMI glow and LCD
screen does not light
up
3
Recloser (AR) is
NOT ready;
OPEN & CLOSE
operations not
possible from
RER615 or from
remote
One or more blinking
RED LED on ACM
Manual Lock out activated.
Emergency manual trip (k69)
handle has been operated and
is locked in operated/tripped
position.
Reset the emergency manual
trip handle & release the manual
lock out
AR Ready LED on
Relay glowing RED
Control cable between LV & HV
units loose / not connected
Connect and secure the control
cable between HV & LV units
Capacitors not sufficiently
charged
-
Put selector switch in
DISCHARGE position
-
Allow capacitors to fully
discharge (follow warning
label text guidelines)
-
Check capacitor connections
to ACM for loose contact and
correct polarity as per wiring
diagram
-
Check the capacitor health;
replace capacitors if needed