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UPS Specifications
40
6.4.1 Battery Manufacturers and Models
Either of two manufacturers’ batteries will be installed in the NX 10-30 kVA 208V as shipped. Below
are the battery makers and the models they supply.
6.4.2 Input Rectifier
6.4.3 DC Intermediate Circuit
Table 11 Approved batteries
Battery Manufacturer Models Supplied
Enersys Yuasa NPX-80FR NPX-100FR NPX-150FR
C&D Dynasty UPS12-100MR UPS12-140MR -
Table 12 Rectifier input power
Rated Power 10kVA 15kVA 20kVA 30kVA
Rated Voltage, VAC 120/208
Supply 3-phase, 4-wire plus ground
Input Voltage Tolerance, VAC (without derating) 166-239
Frequency, Hz 50 / 60
Input Frequency Tolerance % ±10
Power Factor
≤ 0.99 at full load
≤ 0.95 at 50% load
Harmonic Current Less than 4% at full rated UPS output load
Input Current,
1
Nominal, A 28 42 56 83
Output Current, Nominal, A 28 42 56 83
Notes:
1. Overload capacity of input current: 100% Imax <I<125% Imax:
125% Imax <I<150% Imax:
I>150%:
10 min.
1 min.
Limits input current immediately
Table 13 DC intermediate circuit
Rated Power 10kVA 15kVA 20kVA 30kVA
Recommended number of lead-acid batteries
Number of batteries is 24 jars (12V per jar), or 144 cells (2V per
cell) for VRLA. The unit is shipped with a nominal voltage of
288VDC.
Recommended float charge voltage 2.27VDC*
Recommended boost charge voltage 2.3VDC*
Recommended end of discharge voltage 1.65-1.8 VDC
Maximum recharge battery current, A 7.5 7.5 15 15
Maximum boost charge duration, min.* 1440
Boost-float threshold current, A* 0.1 C default
Temperature voltage compensation, mV/°C* 3
Ripple voltage superimposed % ≤ 1
* Set by configuration software and based on usage of VLRA batteries.