GE SERIES B 480 User Manual

Page 53

Advertising
background image

TROUBLESHOOTING - continued

GEH-7252

50

May 2003

GE Capacitor & Power Quality Products

g

PROBLEM:

Harmonic current distortion exceeds 5% on one or more
phases at full load.

Possible cause:

Solution

Source impedance is less than 1.5%.

Add a minimum 1.5% impedance line reactor to the filter input

Possible cause:

Solution

Input source voltage harmonic distortion.

Identify equipment causing harmonic voltage distortion and add
filters as required or accept elevated THVD

Possible cause:

Solution:

Line voltage unbalance exceeds 1%.

Balance input line voltage to 1% or less.

PROBLEM:

Filter output voltage is not within specification

Possible cause:

Filter input voltage is not within specification.

Solution:

Check the AC input line voltage and verify that it is within tolerance.
Refer to the filter service conditions and performance specifications
in Chapter 3 for tolerances.

Possible cause:

Source impedance is out of tolerance.

Solution:

Verify that the source impedance is within tolerance. Refer to the
filter service conditions and performance specifications in Chapter 4
for tolerances.

Advertising