11
DO NOT LEAN OR LIFT THE BATTERY CABINET(S) AFTER THE BATTERIES
HAVE BEEN INSTALLED.
2.4 Connecting the UPS Power Cables
WARNING!!!
A separate power line should be used to supply the UPS AC input. Never use the same
line to supply another electrical device. Do not use any additional cable to increase the
length of the UPS’s input cable. It is advised to use an MCCB suitable for the input current
on the UPS’s input line.
The connection of the electrical panel should be supplied by a grounded outlet.
Otherwise,
the UPS and the load connected to the output will be left ungrounded. The grounding
system must be checked, and must be strengthen if required. Potential difference between
ground and neutral must be less than 3V AC.
Descriptions of the UPS input output cable connection terminals are shown in figure 2.2
Recommended input line cable and fuse ratings are given in the table below.
UPS power
(kVA)
Recommended cable size (mm
2
)
Line input
Bypass input
/ UPS output
External
Battery
AC Input /AC
Output Cable
Terminals
U-V-W-N
Battery
Terminals
+ & -
INPUT
Fuses
Output/
Bypass
Fuses
Battery
Fuses
100 50 50 50
M10 bolt M10 bolt
160A
160A
200A
120 70 70 70
M10 bolt M10 bolt
160A
160A
200A
160 95 95 95
M10 bolt M10 bolt
200A
200A
250A
200 95 95 95
M10 bolt M10 bolt
250A
250A
315A
250 120 95 95
M10 bolt M10 bolt
315A
315A
400A
NOTES: The neutral conductor should be sized for 1,5 times the output/bypass phase current. These
recommendations are for guideline purposes only and are superceded by local regulations
and codes of practice.
2.5 Safety Earth
The safety earth cable must be connected to the earth BUS BAR and bonded to each cabinet in
the system and also the earthing and neutral bonding arrangements must be in accordance with
the local laws.
ATTENTION!!! Failure to follow adequate earthing procedures can result in electric shock hazard to
personnel, or the risk of fire.
2.6 Cable connection procedure
WARNING!!! All connections of the UPS must be done by qualified service personnel
After positioning the UPS, the cables must be connected as described below:
1. Verify all switches and fuses in front of the UPS are at “0” position. (OFF)
2. Connect the 3 phase AC input supply coming from the mains distribution panel, to the AC input
terminals on S1 as shown on the label. (Figure 2.2)
ATTENTION!!!: ENSURE CORRECT PHASE SEQUENCE.
If there is a phase sequence error, UPS doesn’t transfer the load to INVERTER output. If
you can’t see SYNC:OK in the INFORMATION MENU on LCD, then change the input phase sequence.
3. Connect the output of the UPS to the load distribution panel.
4. Connect the battery groups. Refer to battery installation section.
WARNING :
- CHECK BOTH OF THE BATTERY GROUPS FOR CORRECT POLARITY AND VOLTAGE
- DO NOT TURN ON THE BATTERY SWITCH (ON THE EXTERNAL BATTERY CABINET) BEFORE
STARTING THE UPS
5. Connect the copper earth bus, to the safety earth of the mains distribution panel.
NOTE : The earth and the neutral connections must be in accordance with the local rules.
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