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页码 13
 
 
 
 
MGE UPS SYSTEMS 
CleanWave - Installation and user manual Page 
12/13 
 
Version 2.1.4 – 15/01/2007 - 
 
7. TROUBLESHOOTING 
 
 
Malfunction Solution 
 
No neutral current is measured downstream 
the filter. 
•  Is the filter energised ? 
•  Is breaker D1 closed ? 
•  Is the filter feeding the distorting load ? 
 
 
No neutral current is measured upstream the 
filter. 
• The CleanWave
®
 filter reduces the neutral current 
by 10, approximately.  It can happen that the 
remaining value is too low and is not measurable. 
 
 
Tripping of the ‘Warning’ temperature sensor 
of one of the chokes (Lo or Zo) (option)
•  Temperature of the element has reached 165°C 
•  The load must be reduced in order to avoid 
overheating of the filter. 
•  Check that the phase and neutral currents respect 
the limits given in table 4. 
•  Check that the ventilation grids (front and rear) are 
not obstructed.  
•  Check that the Lo and Zo elements are not covered 
with dust. 
•  Isn't the ambient temperature excessive (standard : 
50°C) ? 
 
 
Tripping of the "Alarm" temperature sensor of 
one of the chokes (Lo or Zo) (option)
•  Temperature of the element has reached 190°C 
•  Danger !  The filter must immediately be switched 
off. 
 
 
 
 
Table 11 
 
If the observed malfunction is not in this list or if the problem remains after applying the recommended 
solutions, please contact MGE UPS SYSTEMS to the address below. 
 
 
8. CONTACT 
 
For any assistance or complementary information, please contact your local distributor MGE UPS 
SYSTEMS. You will find his details on the website 
www.mgeups.com
 .