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Appendix 3 Specifications
Electrical
Model
VFI6KT
VFI10KT
Capacity
6 kVA, 5.4 kW, 0.9 pf
10 kVA, 9 kW, 0.9 pf
Input
Power factor
≥0.99
Rated voltage (nominal)
220 230
240 Va.c.
Rated frequency
50 Hz or 60 Hz
Voltage range
120 to 276 Va.c.
Maximum input voltage
320 Va.c., 1 hr
Frequency range
45-55 / 64-66 Hz
Bypass voltage range
max: +10%
, +15% or +20%, d20%
min: -20%, -30% or -45%, default -45%
Bypass frequency range
±1%, ±2%, ±4%, ±5%, ±10%
THDI
3% (100% linear load, input THDV ≤1%)
5% (100% non-linear load, input THDV ≤1%)
Battery
Number of 12 V batteries
16, 18 or 20 batteries in series, centre tapped
Battery type
VRLA
Charge model
Boost charge or float charge auto switch
Charge time
Boost charge up to 20 hr (max)
Charge current (A)
1 A
Output
Output type
Single phase
(L, N and E)
Output precision
1.0%
Voltage distortion (THD)
<2% with 100% linear load
<5% with 100% non-linear load
Rated voltage
220
/
230
/240Va.c.
Frequency precision
±0.1%
Frequency
50 Hz / 60 Hz
Frequency tracking speed
1 Hz/s
VFI-KT Series User Manual
