14 15
longer than 1.5s, this signal can no longer be canceled.
3. The UPS is not switched off immediately after the receipt of a switch off signal
at Pin 4; instead, the unit starts a 2-minute timer and the switch off will only
take place after 2 minutes.
Note: the switch off timer cannot be stopped midway once it is activated.
4. In case the Power Mains resumes supply during the 2-minute countdown, the
timer still fulfills the countdown and switches off the UPS. The UPS will remain
OFF for at least 10s before automatically resuming the LINE MODE, even if
the AC input is resumed before the UPS is switched off.
6. Electrical Specification
6.1 Input
Model: 6kva 120v/240v
Acceptable L-N Input
Voltage without damage 0-150 VAC
Note 3
Acceptable input frequency
without going to batteries 40-70Hz; 0.1
Low Line Transfer Voltage
Range With 110, 115, 120,
127 Nominal L-N
(based on % loading)
L1-N or L2-N voltage, whichever is less
100-90% / 90-70% / 70-30% / 30-0%
Low Line transfer 90 / 80 / 70 / 60 VAC; 3.1 VAC
High Line transfer 140 VAC; 3.1 VAC
Input power factor
0.97 at full resistive load, nominal input conditions
0.95 at half load
Input frequency 40 Hz to 70 Hz; ±0.1 Hz
Bypass Protection Limits
Disable Bypass operation If input voltage exceeds ±15% of the nominal voltage
Re-enable Bypass
operation If input voltage returns to within ±10% of nominal output
voltage
Note - The intent of low and high line transfer and comeback voltages is to
establish about 7 VAC of hysteresis. The ±3.1 VAC tolerance is to mean that if the
transfer point is +2 VAC, then the retransfer point should also be about +2 VAC. If
the low line transfer point is +3.1 VAC and the retransfer point is –3.1VAC, the
hysteresis could be reduced to 0.8 VAC. To prevent this, the voltage error should
be in the same direction and about the same magnitude for each transfer point
voltage pair.
Note – At a nominal line voltage of 127 VAC, the maximum AC input will be
reached before 127 + 15% and the unit will go to battery mode before the bypass
reaches the disable voltage, so 127 +15% can be ignored.
Note - If the transfer points are specified using L-N voltages, the L-L voltage will
depend upon whether the inverters are 120 or 180 degrees apart. For reference,
this table shows the equivalent L-L voltages for the specified L-N voltages.
Angle Max VAC (120 +
25%)L-N / L-L High Line Transfer
(120 + 17%)L-N / L-L Low Line Transfer (120 –
25%)L-N / L-L
180 150 / 300 140 / 280 90 / 180
120 150 / 260 140 / 242 90 / 156
6.2 Output
Model: 6kva 120v/240v
Power
Load may be all L-N, all L-L, or mixed
Power (kVA) max. 6.0 (110V derated to 5.4 kVA)
Power (kW) max. 4.2 (110V derated to 3.78kW)
Load Power Factor
Range 0.65 lagging to 1.0 (unity)
Output Voltage
Waveform Sinusodial
Nominal L1-N & L2-N
Voltages
120 VAC (Factory default setting)
Line Mode RMS Voltage L1-N, L2-N = 3 % of nominal, L1-L2 = 5 % of nominal;
no load to full load, resistive & RCD loads
Battery Mode RMS
Voltage L1-N, L2-N = 3 % of nominal, L1-L2 = 5 % of nominal;
no load to full load, resistive & RCD loads
Transfer Time 0 mS
Output Voltage Distortion
Linear Load 3% THD, R load
Non-Linear Load
(no load to full load) 5% THD, RCD load
Output Frequency 50 Hz nominal operation
Synchronization Range 46.5 Hz - 53.5 Hz; ±0.1 Hz
47 Hz - 53 Hz; ±0.1 HzCapture Range 60 Hz nominal operation
Synchronization Range 56.5 Hz – 63.5 Hz; ±0.1 Hz
Capture Range 57.0 Hz – 63.0 Hz; ±0.1 Hz
Free-Running Mode 0.1 Hz of nominal
AC Efficiency
