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Liebert NXC
9.4 Electrical Characteristics (Input Rectifier)
Item
1
Rated AC input voltage
2
Frequency
Power factor
Input power
Input current
Harmonic current distortion
Duration of progressive power walk-in
Note:
1
Rectifier operates at any of the rated supply voltages and frequencies without further adjustment.
2
At 305 V mains input, the UPS maintains the specified output voltage at rated load without discharging a previously charged battery.
3
EN/IEC 62040-3/EN50091-3: at rated load and input voltage 400V, battery charged.
4
EN/IEC 62040-3/EN50091-3: at rated load and input voltage 400V, battery charging at maximum rated power
9.5 Electrical Characteristics (Intermediate DC Circuit)
Item
Battery bus voltage
Quantity of lead-acid blocks
Float voltage
Ripple voltage
Ripple current
Boost voltage
Boost control
EOD voltage
Max battery charging power
charging current (adjustable)
Note:
1
At low input voltage the UPS recharge capability increases as the load decreases (up to the maximum capacity indicated).
2
Max currents listed are for EOD voltage of 1.67 V/cell for 240 cells
User Manual 10H52188UM60 - Rev. 2 - 09/2012
Table 9-4 Rectifier AC Input (Mains)
Unit
Vac
Hz
kW/kVA,
full load;
half load
3
kVA rated
3
kVA rated
4
(max.
)
3
A rated
3
A rated
4
(max.
)
THDI% FL
s
Unit
Vdc
Nominal
Other
possible
values
V/cell
(VRLA)
% V float
% C10
V/cell
(VRLA)
-
V/cell
(VRLA)
1
kW
and max
2
A
10
380/400/415; default 400
>0.99 @ full load; > 0.98 @ half load
10
15
14
21
Table 9-5 Battery
10
Nominal: 384 (VRLA float charge is 436 V); range: 300 to 576
2.27 (selectable between 2.2 V/cell and 2.3 V/cell)
Constant current and constant voltage charge mode
2.35 (selectable between 2.3 V/cell and 2.4 V/cell)
Constant current and constant voltage charge mode
Programmable automatic trigger or inhibit of boost mode
Float-boost current trigger 0.050 C10 (selectable between 0.001 and 0.070)
Boost-float current trigger 0.010 C10 (selectable between 0.001 and 0.025)
24h safety time timeout (selectable between 8h and 30h)
Boost mode inhibit also selectable
Lower limit: 1.63 (selectable between 1.60 V/cell and 1.67 V/cell)
Upper limit: 1.75 (selectable between 1.67 V/cell and 1.85 V/cell)
Automatic inverse, EOD voltage x discharge current mode
(the EOD voltage increases at low discharge currents)
Product Specifications
Rated power (kVA)
15
40...70
15
20
21
28
<5 (3/3); <15 (3/1)
5
Rated power (kVA)
15
32
30-34-36-38-40
1.41
5
4.5
11
20
20
25
28
35
20
61
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