BOXER SERIES10-20 KVA
INSTALLATION
AG-SD-109 Publishing Date: 13.10.2015 Revision No: 0 Rev. Date:
Over current protecting must be installed on mains input board. This protection must be
selected in conformity with the bearing capacity of over current and over load of the UPS.
The fuses in the board must be chosen as 135% higher rated than the current values given in the
table below, and the fuses must be C-type (slow).
Ground leakages flow to the ground through the EMI filters on the input and the output of the
UPS. Accordingly, MAKELSAN recommends a residual current relay over 300mA.
The residual current relays to be placed in the UPS input must also be:
Resistant to both positive and negative DC pulses,
Not sensitive to transient currents.
Must be sensitive to currents which is average between 0, 3-1 ampere.
3.1.5.2 Cable and Fuse Configuration
Cable designs must be compatible to current and voltage values stated herein, additionally local
instructions must be obeyed about these topics.
UPS
Rating
(KVA)
Rated Currents
(A)
Mains Currents at Maximum
Battery Charge (3 phase +
neutral)
Output Currents under Full
Load (3 phase + neutral)
380V
400V
415V
380V
400V
415V
10
17,1
16,2
15,7
15,4
14,6
14,1
15
25,6
24,4
23,5
23,1
21,9
21,1
20
34,2
32,5
31,3
30,8
29,2
28,2
Non-linear loads (loads such as computer) may affect cable section design. Their neutral
currents might be more than phase currents, even may rise up to 1.5 times the phase current.
Each cabinet must be, directly and as short as possible, to ground line by means of protection
ground cable. Typical ground cable cross sections are 2,5 mm
2
for 10 kVA and 6 mm
2
for 15 kVA
and 10 mm
2
for 20 kVA. It is recommended that cable length not exceed 5 meters.
3.1.5.3 Cable Connections
UPS input, output and battery connection inlets are made from the rear side of the UPS. Cable
connections are performed after the big cover at the back of the device has been removed.