Modifications reserved
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OPM_LPS_33E_60K_M12_2GB_V010.doc
Operating Manual
LP 33 Series 60-80-100-120 kVA / S2
5.9 UPS FUNCTIONING AS FREQUENCY CONVERTER
When the UPS
LP 33 Series
is delivered as frequency converter (different output frequency with respect
to the input frequency),
the automatic bypass and manual bypass functions are disabled
.
Therefore the
load
cannot be transferred to mains in case of overload, short circuit, or inverter failure.
In cases where the UPS needs to be powered down for maintenance purposes, the critical load must
also be powered down during this time.
When the set-up parameters of the UPS are set for
frequency converter
, the
ECO Mode
operation is
automatically disabled.
The UPS delivered as
frequency converter
has the following differences:
•
Automatic
bypass disabled
by setting of dedicated parameter (access protected by password
reserved to service engineer).
•
The handle of the switch
Q2 - manual bypass
is removed to avoid accidental wrong manipulations.
•
Mains bypass
disabled by removing the fuse
F3
fitted on the board
P2 – Power Supply
.
WARNING !
In case a UPS delivered as frequency converter should be set on site for UPS
standard version, the operation must be performed by a qualified service engineer.
Notices for installation:
•
For UPS with
common AC input
follows the standard procedure described in
Section 5.8.1
.
Notices for start up procedures:
•
Follow the standard procedure indicated in
Section 8.1
.
Notices for shutdown procedures:
•
Follow the standard procedure indicated in
Section 8.1
.
NOTE !
The inverter can be turned off only by pressing the push-button
Total Off
.