Ups Functioning As Frequency Converter - GE Digital Energy LP 33 Operating Manual

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UPS FUNCTIONING AS FREQUENCY CONVERTER

When the UPS LP 33 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 IEM 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 F2 fitted on the board P12 - Control Interface.
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 4.8.1.
•
For UPS with separate AC input only the rectifier input must be powered (see Section 4.8.2)
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.
OPM_LPS_33E_10K_30K_4CN_V010.doc
Operating Manual LP 33 / 10-20-30 kVA
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