Modifications reserved Page 43/103
OPM_LPS_33E_60K_M12_2GB_V010.doc Operating Manual LP 33 Series 60-80-100-120 kVA / S2
5.8.5 LP 33 Series 80 kVA - Power connection with separate input mains (option)
NOTE !
Neutral of rectifier input and neutral of bypass input must be coming from the
same input bar. Inside the UPS, neutrals N1 and N are connected together.
Load
X3
L1
L2
L3
N2
L
P
S
3
3
_
0
8
0
_
S
2
_
C
o
n
n
e
c
t
i
o
n
s
e
p
a
r
a
t
e
_
E
M
C
_
0
1
Mains 1
X4
Battery
X1
L1-1
L2-1
L3-1
N1
PE
-
0
+
PE
PE
Mains 2
X2
L1-2
L2-2
L3-2
N
PE
Fig. 5.8.5-1 Terminals for separated input mains
X1 Mains 1
Rectifier input mains connection
L1-1 = Rectifier Phase L1
L2-1 = Rectifier Phase L2
L3-1 = Rectifier Phase L3
N1 = Neutral of Rectifier Mains
PE = Main Ground
X2 Mains 2
Bypass input mains connection
L1-2 = Bypass Phase L1
L2-2 = Bypass Phase L2
L3-2 = Bypass Phase L3
N = Neutral of Bypass Mains
X3 Load
Load output connection
L1 = Load Phase L1
L2 = Load Phase L2
L3 = Load Phase L3
N2 = Load Neutral
PE = Load Ground
NOTE !
Max. rating X1 –X2 - X3 -X4 terminals: 70mm
2
.
Input/output terminals must be tightened with a
proper screwdriver applying torsion force 3 Nm.
LPS33_040-120_Connection battery_01
+
0
-
+
0
-
X4
PE
Fig. 5.8.5-2 External battery connection
X4 Battery
External battery connection
- = Negative pole of the battery
0 = Central point of battery blocks
+ = Positive pole of the battery
PE = Battery cabinet ground
WARNING !
Before closing the “external battery fuses”, verify for correct polarity of the battery
connection.
NOTE !
To meet standards concerning electromagnetic compliance, the connection
between the UPS and external Battery must be done by using a shielded cable or
suitable shielded (metal) conduit!
This UPS is only designed to operate in a wye-configured electrical system with a
solidly grounded neutral.
If the UPS is equipped with an input transformer, the secondary of the
transformer must be wye-configured with neutral solidly grounded.
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