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GE SERIES B 480 User Manual page 52

480 volts, 60hz
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TROUBLESHOOTING - continued
PROBLEM:
Possible cause:
Solution:
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Solution:
GEH-7252
Harmonic current distortion exceeds 8% on one or more
phases at full load.
On filters rated 52 amps and above, the capacitor assembly has not
been connected.
Check interconnection of capacitor assembly with reactor panel
(Figure 26).
A capacitor has failed.
Inspect the tops of all capacitors for bowing. Replace failed
capacitors.
Source impedance is less than 1.5%.
Add a minimum 1.5% impedance line reactor to the filter input
Input source voltage harmonic distortion.
Identify equipment causing harmonic voltage distortion and add
filters as required or accept elevated THVD
Line voltage unbalance exceeds 1%.
Balance input line voltage to 1% or less.
Harmonic current distortion exceeds 5% on one or more
phases at full load.
The input reactor required for a 5% filter was not installed. (See
Figure 38.)
Install the required input reactor
On filters rated 52 amps and above, the capacitor assembly has not
been connected.
Check interconnection of capacitor assembly with reactor panel
(Figure 26).
A capacitor has failed.
Inspect the tops of all capacitors for bowing. Replace failed
capacitors.
49
GE Capacitor & Power Quality Products
May 2003

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