Table of Contents
Advertisement
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 "Removal from service" on page 11
and Service Information MN225003EN, CL -7
Voltage Regulator Control Installation, Operation,
and Maintenance Instructions, for detailed service
information and safe bypassing instructions.
InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN June 2020
VR-32 and EVER-Tap™ Voltage Regulator
35
Advertisement
Table of Contents
