Alpha Technologies Tri Power X31 HE, Руководство пользователя

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I
NTERNAL
P
ROTECTIVE
D
EVICES OF THE
TRIPOWER X31 HE
The table below shows the sizes of the isolators of the UPS and the sizes of the battery fuses (SWBATT): these devices are
accessible from the front of the UPS.
There are also indications about the internal fuses (not accessible) protecting the input and output lines and the maximum input
and rated output currents. To install the TRIPOWER X31 HE, see the block diagram in the “USE” section of the “Description”
paragraph.
Fuses are to be replaced with ones of the same size and the characteristics indicated in the table below.
Isolators and internal protective devices
UPS
mod.
Non-automatic switches Fuses
[kVA]
UPS input /
Separate bypass
UPS output /
Maintenance Rectifier input
fuse
Battery fuse Output fuse
Input
current
[A] **
Output
current
[A]
SWIN / SWBYP
(optional)
SWOUT / SWMB SWBATT
Max
*
Rated
10 40A(4P) 40A(4P)
25A FF 500V
(6.3x32)
32A gG 400V
(10x38)
25A FF 500V
(6.3x32)
20A 15A
15 63A(4P) 63A(4P)
2 x 20A FF
500V (6.3x32)
50A gG 400V
(14x51)
2 x 20A FF
500V (6.3x32)
29A 22A
20 63A(4P) 63A(4P)
2 x 20A FF
500V (6.3x32)
50A gG 400V
(14x51)
2 x 20A FF
500V (6.3x32)
38A 29A
* The max. input current refers to a rated load (PF = 0.8) and an input voltage of 346V,
and a battery charger charged with 4A.
** In versions with additional internal battery chargers (optional), the maximum input current on lines L2 and L3 must be increased
by 7A.
SHORT CIRCUIT
If a failure occurs on the load, the TRIPOWER X31 HE protects itself by limiting the value and duration of the current output (short-
circuit current). These values also depend on the operating status of the TRIPOWER X31 HE at the time of the failure; there are
two different cases:
 TRIPOWER X31 HE in NORMAL OPERATION: the load is switched instantaneously to the bypass line (I 2 t=11250A 2 s):
the input line is connected to the output without any internal protection (blocked after t>0.5s)
 TRIPOWER X31 HE in BATTERY OPERATION: the UPS protects itself by providing a current equivalent to about 1.5
times the rated current for 0.5s and turns itself off after this time has elapsed
BACKFEED
The TRIPOWER X31 HE has internal protection against backfeed through metal separating devices.
There is an output on the relay board (optional) for activating a releasing device to be installed upstream from the TRIPOWER
X31 HE.
The TRIPOWER X31 HE has an internal device (redundant bypass power supply) which, when a failure occurs on
the machine, activates the bypass automatically, thus keeping the load powered without any internal protection and
without any limitation to the power supplied to the load.
Under these emergency conditions, any disturbance present on the input line will affect the load.
See also the “USE” section of the “Redundant Auxiliary Power Supply for Automatic Bypass” paragraph.