GE SERIES B 480 - Manual (Page 51)

GEH-7252 48 May 2003
GE Capacitor & Power Quality Products
g
TROUBLESHOOTING
WARNING
When properly installed, this equipment
has been designed to provide maximum
safety for operating personnel. However,
hazardous voltages exist within the
confines of the enclosure. Servicing
should therefore be performed by
qualified personnel only and in
accordance with OSHA Regulations.
To aid in troubleshooting, a block diagram is
shown in Figure 38, and a list of potential
problems and solutions are listed below.
WARNING
HIGH VOLTAGE IS USED IN THE
OPERATION OF THIS FILTER. USE
EXTREME CAUTION TO AVOID
CONTACT WITH HIGH VOLTAGE WHEN
OPERATING, INSTALLING OR
REPAIRING THIS FILTER. INJURY,
DEATH AND/OR PROPERTY DAMAGE
MAY RESULT IF SAFETY PRECAUTIONS
ARE NOT OBSERVED.
After removing power, allow at least five
minutes to elapse and verify that the
capacitors have discharged to a safe
level before contacting internal
components. Connect a DC voltmeter
across the capacitor terminals 1, 2 and 3
on terminal block 1TB. Start with the
meter on the highest scale and
progressively switch to a lower scale as
the indicated voltage falls below the
maximum value of the scale used.
PROBLEM: Line voltage is not present at the filter
output terminals.
Possible cause: Power to the filter is turned off.
Solution: Turn power on.
Possible cause: One or more external line fuses are blown.
Solution: Verify the continuity of line fuses in all
phases. Replace as necessary.
.