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User Manual 10H52246UM60 - Rev. 1 - 01/2017
ECLECTRICAL INSTALLATION
port
capacity of input
external switch
Capacity
capacity of output
external switch
60kVA
(3-in 3-out)
Terminal
block
125A (3P), bypass
125A (3P)
10kA
DC 200A (4P)
Terminal blcok
125A (3P)
3.1.5
Distance Between The UPS Connection Point And The Floor
See Table 3-4 for details.
Table 3-4
Min. distance between UPS connection point and floor
UPS connection point
Min. distance
(
mm
)
60kVA
Rectifier input
236
Bypass input
236
AC Output
236
Battery 265
PE terminal
220
3.1.6
Notes
The following points are for general guidance only. If there are any relevant local regulations, these shall prevail.
1. The neutral line cable size must be selected for a current 1.5 times greater than the output/bypass phase current.
2. The protective earth cable size shall be selected according to the AC power failure level, cable length and
protection type. The grounding wire connection must use the shortest possible connection path.
3. In the case of cables carrying large currents, it is possible to connect multiple cables with smaller current carrying
capacities in order to facilitate installation.
4. When selecting the battery cable size, refer to the current value indicated in Table 3-1, allowing a maximum
voltage drop of 4Vdc.
3.1.7
Power Cable Connection Terminals
The rectifier input, bypass input, output and battery power cables are connected to the corresponding terminals
shown in Figure 3-2.
3.1.8
Protective Earth
The protective earth cable must be connected securely to the PE input terminal (see Figure 3-2) using the fixing
bolt.
All the cabinets and cable troughs shall be grounded according to the local regulations. The grounding cables shall
be secured so as to prevent the tightening screws from being loosened when the grounding cables are pulled.
Warning
Failure to ground units correctly can cause EMI, electric shock or fire risk.
3.1.9
External Protective Device
To guarantee safety, it is necessary to install external circuit breakers on the UPS main, bypass and battery input
lines. Because of the differences between specific installations, this section is intended to provide general practical
information for the installation engineer only. Qualified installation engineers should have the knowledge of the local
wiring regulations that apply to the equipment to be installed.
Rectifier and bypass input power supply
1. Input over-current and short circuit protection
Install suitable protection devices on the input mains supply distribution line. Such devices should be selected in
order to protect the UPS against over current and short circuits, provide isolation protection and trip in the event of
back-feed. When selecting the protective devices, consider the power cable current-carrying capacity, system
overload capacity (see Table 11-6 and Table 11-7) and the short circuit capacity of the upstream power distribution
system. We normally recommend using a thermo-magnetic circuit breaker having an IEC60947-2 tripping curve C
(normal), when the current value reaches 125% of the current value listed in Table 3-1.
2. Separate bypass configuration
If the UPS is supplied by a separate bypass configuration, an independent protective device shall be installed on the
rectifier input and bypass input distribution lines.
Note
The rectifier input and bypass input must use the same neutral line.
3. Ground fault protection
If the pre-stage input power supply is fitted with an RCD, the transient state and steady state ground leakage
current upon the startup of the UPS must be taken into account.
The RCCB shall meet the following requirements:
Be sensitive to the DC unidirectional pulse (class A) of the whole distribution network
Be insensitive to transient state current pulses
Have an average sensitivity of 0.3A ~ 3A (adjustable)