User Manual Liebert Hipulse E Chapter 12 – Additional Equipment
Single or '1+N' UPS System
(07/04) Page 12-9
12.5 EMC Class A filter
To convert to Class ‘A’ UPS, the following factory installed optional EMC kits must be fitted (to require when placing
the order).
Model P/N
300 kVA UPS (6&12 pulse) 4641134E
This option is needed to control the single and combined effect of both radiated and conducted noise within the range
of specified EN and IEC Standards. Refer to Chapter 6 ‘Installation drawings’.
12.6 Input Harmonic Filter (5th and 11th)
Properly designed tuned filters are available to reduce the most critical harmonic pollution (5th and 11th).
They also can improve the Liebert Hipulse E input power factor, leading Power Factor (P.F.) from 0,8 up to 0,93.
These optional input filters can be installed without any additional system footprint and their performances are shown
in Chapter 5 ‘System performance’.
Figure 12-4 – Optional input filter schematic
5
th
harmonic filter
This optional harmonic filter can be fitted in the 6 pulse UPS to improve the UPS input power factor and reduce the
amount of electrical noise reflected into the input three phase supply.
Model P/N Weight (kg.)
300 kVA UPS 4641182A 160
400 kVA UPS 4641056E 184
11
th
harmonic filter
This filter can be fitted in a 12 pulse UPS.
Model P/N Weight (kg.)
300 kVA UPS 4641165N 106
400 kVA UPS 4641066O 132
12.7 Additional autotransformer
When the mains voltage or the voltage required by the load has a different value in respect to the UPS standard value,
an autotransformer for the voltage adjustment can be added.
To Next Page
Loading...
