Modifications reserved
Page 37/103
OPM_LPS_33E_60K_M12_2GB_V010.doc
Operating Manual
LP 33 Series 60-80-100-120 kVA / S2
5.8 ELECTRICAL CONNECTION
WARNING !
The connections to and from the UPS must be executed by QUALIFIED PERSONNEL
ONLY.
Refer to the “
Safety prescriptions
” described on
Section 1
.
Carefully read the following recommendations before proceeding:
•
Ensure that the
AC
and
DC
external isolators are Off, and prevent their inadverted operation.
•
Do not close any external isolators prior to the commissioning of the equipment.
•
The input/output cables must be put in order and fixed, taking care to avoid risk of short-circuit
between different poles.
•
The earthing and neutral connection of the electrical system must be in accordance with local
regulations.
•
In case of additional cabinets containing batteries, filters, input/ output transformers, etc, the earth
must be connected to the UPS main earth.
•
Once the power cables have been connected, re-install the internal safety shields and close the
cabinets by re-installing all external panels.
OFF
ON
B
A
C
D
OFF
ON
LPS33_060-080_
S2_Connection_0
1
Fig. 5.8-1 LP 33 Series 60 - 80 kVA
Power IN / OUT connections
ON
OFF
Q1
ON
OFF
B
A
C
D
Q2
LPS33_100-120_
S2_Connection_0
1
Fig. 5.8-2 LP 33 Series 100 - 120 kVA
Power IN / OUT connections
Access to the AC terminals
1
- Open the front door
“
A
”
of the UPS cabinet.
2
- Remove the front panel
“
B
”
.
3
- Cut an opening into rubber
“
C
”
to allow cable passage.
4
- Fix the cables on profile
“
D
”
with the enclosed cable ties.
NOTE !
For UPS correct operation, the input mains phase rotation must be clock-wise.
