3.2 Connecting the Cable
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Preparation before connecting the cable
Important
When connecting the UPS to the electrical power equipment with the
earth leakage breaker, select the earth leakage breaker not to trip due to
current leakage.
When connecting the UPS to the electrical power equipment with the earth leakage
breaker, select the earth leakage breaker in consideration of total number of current
leakage of the UPS plus current leakage of the connection device.
When connecting the UPS to a three-phase power supply system, be sure
to connect the grounding phase of the three-phase power supply system
to the electrode of a grounding side of the AC input of the UPS.
If connecting to an un-grounding power supply, there is fear of becoming the cause of
the malfunction.
When using a generator temporarily during the rolling blackouts, use a
generator satisfying the following specification.
If connecting a generator not satisfying the following specification to the input part of
the UPS, there is a possibility of becoming the cause of the malfunction or damage of
the UPS.
Voltage regulation: depend on the input specification of the connection
device
Frequency variation: within rated frequency ± 5% (frequency does not
change rapidly)
Voltage waveform distortion: within 5%
Voltage zero-cross condition: Zero-cross must not occur twice or more in 1
cycle.
1.
Confirm the input power supply. The input power supply which can connect with
this UPS is as follows.
UPS model
Breaker
capacity
Input
capacity
Input
voltage
Input
frequency
Number of
phase
M-UPS
050AD2B
(5kVA)
40A or
more
5kVA or
more
M-UPS
075AD2B
(7.5kVA)
50A or
more
7.5kVA or
more
M-UPS
100AD2B
(10kVA)
75A or
more
10kVA or
more
160 to 288V
AC
50/60Hz
± 5% (Note)
Single-phase
two-wire
50Hz or 60Hz
Illegal zero cross
Summary of Contents for M-UPS050AD2B
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