34007724EN/AD - Page 35
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5. Appendices
5.1 Technical specifications
Electrical characteristics
I/T network and industrial operating modes
Selection of protection devices
UPS unit with common Normal and Bypass AC inputs
UPS unit with separate Normal and Bypass AC inputs
When sizing the upstream circuit breakers, the parameters presented below must be taken into account:
Line current values
UPS
power rating
Continuous current
at 400/320 Volts
and nominal load
Continuous current
at 320 Volts and
overload = 110 %
limited to 2 minutes
Input fuse rating
Output fuse rating
5 kVA
9/10 A
11 A
25 A
80 A
7 kVA
10/11 A
12 A
25 A
80 A
11 kVA
15/19 A
21 A
30 A
100 A
Discrimination of upstream/downstream protections mentioned in paragraph 2.6 is achieved for a 30 m
cable length and 10 mm
2
cross section.
Circuit breaker capacity must be selected according to the installation, length and cross section of cables.
Mode Industrial mode
I/T network mode
Overload, and Bypass
AC source in tolerance.
Same as I/T network mode, but the UPS
does not return to normal mode if overload
released.
Load is transfered to Bypass AC
source.
UPS returns to normal mode if
overload released.
Overload, and Bypass
AC source not in
tolerance.
Load is transfered to Bypass AC source
with 10 milliseconds output break. The
UPS does not return to normal mode if
overload released.
The UPS shuts down and load is not
transfered to Bypass AC source.
Output short circuit and
Bypass AC source in
tolerance.
Load is transfered to Bypass AC source,
the UPS returns to normal mode if the
short circuit is released by downstream
circuit breaker action (see section 2.6).
The load remains powered by the
UPS.
The UPS shuts down after 3 minutes
if the short circuit remains.
Output short circuit and
Bypass AC source not
in tolerance.
The load is transfered to Bypass AC source
with 10 milliseconds output break. The
UPS does not return to normal mode if the
short circuit is released by downstream
circuit breaker action (see section 2.6).
The load remains powered by the
UPS. The UPS shuts down after 3
minutes if the short circuit remains.
Bypass AC
Normal AC
Bypass AC
Normal AC
Upstream
circuit breaker
(not supplied)
Downstream
circuit breaker
(not supplied)
Input
fuse
Output
fuse
Upstream
circuit breaker
(not supplied)
Downstream
circuit breaker
(not supplied)
Input
fuse
Output
fuse
Upstream
circuit breaker
(not supplied)
Normal
AC source
circuit
breaker
Normal
AC source
circuit
breaker
