Aros Flexus FM, Руководство пользователя

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P
ROTECTIONS INSIDE THE
UPS
The following table shows the sizes of the disconnecting switches on the UPS system as well as the sizes of the battery
fuses (SWBATT); these devices can be accessed from the front of the UPS.
The table also provides details on the internal fuses (not accessible) used to protect the input and output lines, and the
maximum input and nominal output currents. Please refer to the block diagrams in the “USAGE” section of the
“Description paragraph for the position of the fuses.
Fuses must be replaced with fuses of the same rating and with the same characteristics as indicated in the table.
Disconnecting switches and Internal protections
UPS
Model
Non automatic switches Battery fuse Current
[kVA]
UPS Input
UPS Output/
Maintenance/Separate
Bypass
Input current
[A] Max
*
Output
current
[A]
3P+N **
SWIN
SWOUT / SWMB /
SWBYP (optional)
SWBATT
L1*** L2/L3
P+N Nominal
10 63A(4P) 63A(2P) 32A gG 400V (10x38) 49A 18A 55A 45A
12 63A(4P) 63A(2P) 32A gG 400V (10x38) 59A 21A 64A 55A
15 100A(4P) 100A(2P) 50A gG 400V (14x51) 72A 25A 76A 68A
20 100A(4P) 100A(2P) 50A gG 400V (14x51) 95A 33A 98A 91A
* The maximum input current refers to a nominal load (PF = 0,8) and to an input voltage of 346V (200V for single-
phase connections), and with the battery charger under charge at 4A.
** On versions with additional internal battery chargers (optional), the maximum input current on lines L2 and L3 should
be increased to 7A.
*** When operating off the bypass with a three-phase connection, all the output current is applied to L1 and Neutral.
SHORT-CIRCUIT
In the event of a fault on the load, in order to protect itself the UPS limits the value and the duration of the power supplied
(short circuit current). These values also depend on the operating status of the unit at the time of the fault, which is
either:
ƒ UPS in NORMAL MODE: the load is instantly switched over to the bypass line (I
2
t=25000A
2
s): the input line is
connected to the output without any internal protection and shuts down after t>0.5s
ƒ UPS in BATTERY MODE: the UPS protects itself by supplying output current of around 1.5 times the nominal
current for 0.5s and then shuts down.
BACKFEED
The UPS is also protected internally against backfeed through metal separation devices.
An optional relay output card is available to ensure the control of a release device to be installed upstream of the UPS.
The UPS has an internal device (redundant bypass power supply) which in the event of a fault automatically
activates the bypass while ensuring power to the load without any internal protection and without any limit on
the power supplied to the load.
In these emergency conditions, any disturbance on the input line will have repercussions on the charge.
Please also refer to the “Usage” section of the paragraph entitled “Redundant auxiliary power supply for
automatic bypass”.