Matrix Series D Users Manual
STARTUP - CONTINUED
45
Part No.
INSTR-025 REL. 071207
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.
PROBLEM:
Full Load Harmonic current distortion exceeds 5% on one or more
phases at full load.
Possible cause:
The capacitor assembly has not been connected.
Solution:
Check interconnection of capacitor assembly with HMR (Figure 19 & 20).
Possible cause:
A capacitor has failed.
Solution:
Inspect the tops of all capacitors for bowing. Replace failed capacitors.
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.
