9. Place the
CONTROL FUNCTION
switch on
LOCAL
MANUAL
.
10. Jog the
RAISE/LOWER
switch in the direction the
capacitive voltage was observed. This should allow the
tap-changer to free itself. Using the
RAISE/LOWER
switch, run the tap-changer one or two steps. Inspect
the position indicator to verify that the indicating
pointer is directly over a tap position mark. If the
pointer is not directly over a tap position mark, jog the
RAISE/LOWER
switch in the same direction as done
previously. This should put the pointer in the correct
position.
11. Remove the voltage regulator from service as soon as
possible to determine the cause of the problem and
perform maintenance.
12. Place the
CONTROL FUNCTION
switch on
OFF
.
13. Place the
POWER
switch on
OFF
.
14. Open
V1
disconnect switch.
15. Reconnect the orange lead to the
HS
terminal restoring
power to holding switch.
16. Close the
V1
disconnect switch.
17. Open the
C
switch.
18. Place the
POWER
switch on
INTERNAL
.
19. Turn
CONTROL FUNCTION
control switch to
LOCAL
MANUAL
.
20. Using the
RAISE/LOWER
switch, step the regulator to
the neutral position.
21. Before de-energizing the regulator by bypassing to
remove it from service, verify that the regulator is
in the neutral position. It is recommended that you
perform a minimum of four checks to confirm that the
voltage regulator is in the neutral position:
●
●
The neutral light remains on continuously.
●
●
The position indicator points directly at N.
●
●
The control panel position indication viewed at FC 12
reads zero.
●
●
A voltage measurement between the S (Source) and
L (Load) bushings measured using voltmeter test
equipment or CL-7 control SAFE-TO-BYPASS feature
indicates no differential voltage.
Refer to
and Service Information MN225003EN,
CL-7
Voltage Regulator Control Installation, Operation,
and Maintenance Instructions
, for detailed service
information and safe bypassing instructions.
35
VR-32 and EVER-Tap™ Voltage Regulator
InstallatIon, operatIon, and MaIntenance InstructIons
MN225008EN June 2020
