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Models 850VA 1.15kVA 1.4kVA 1.8kVA 2.1kVA 3.1kVA 4.3kVA* 7kVA*
Part Number QFES850 QFES1.15 QFES1.4 QFES1.8 QFES2.1 QFES3.1 QFES4.3 QFES7
Capacity (kVA/kW) .8/.6 1.15/.8 1.4/1 1.8/1.25 2.1/1.5 3.1/2.2 4.3/3 7/5
Dimensions
inches
mm
HxWxD

9.75 x 16 x 21.25
248 x 406 x 540

9.75 x 16 x 26.25**
248 x 406 x 667

19 x 16 x 26.25
483 x 406 x 667
Front Panel
inches
mm
HxW

10.5 x 19
267 x 483

10.5 x 19
267 x 483

19.25 x 19
489 x 483
Battery Pack
inches
mm
HxWxD

internal

internal

8.3x16.25x24.25
211x413x616
Weight
lbs
kg
(incl. batteries)

108
49

141
64

154
70

216
98

227
103

245
111

509
231

600
272
Input - Hardwired Connection Circuit Breaker Requirement** 220/4.4A
230/4.2A
240/4.0A
220/4.9A
230/4.6A
240/4.4A
220/5.7A
230/5.4A
240/5.2A
220/7.9A
230/7.5A
240/7.2A/
220/8.2A
230/7.8A
240/7.4A
220/13A
230/12A
240/12A
220/19A
230/18A
240/17A
220/27A
230/26A
240/24A
Output Connection Hardwired output is standard.  Contact factory for receptacle options.
Typical Runtime
full load
half load
(minutes)


11
28


19
49


14
36


31
73


24
58


14
35


26
61


12
33
Operation
Nominal Input Voltage 220/230/240
Input Voltage Range +15%, -20%
Operating Frequency 50Hz (on-line - ±0.01Hz to ±3Hz adjustable, on inverter - ±0.005Hz)
Nominal Output Voltage 220/230/240
Output Voltage Regulation ± 3% for input voltages of + 15% to -20% of nominal.
+5%, -8.3% for any line, load or battery condition.
Output Voltage Waveform Sine wave
Output Voltage THD 5% or less THD at rated kW load
Overload Capacity 150% surge and 125% for 10 minutes on-line,
150% surge and 110% for 10 minutes on inverter
Transfer Time 0 ms
Lightning, Surge & Noise Protection 2000:1 spike attenuation using ANSI/IEEE C62.41
and C62.45 Category A and Category B tests.
Common Mode - >120dB.  Normal Mode - >60dB
Efficiency 85 88 88 90 90 91 90 90
Heat (on-line)
BTU/hr
kW/hr

361
0.106

372
0.109

465
0.136

474
0.139

568
0.166

742
0.217

1138
0.333

1896
0.556
Battery Charger (DC) 12V, 4A 12V, 8A 48V, 4A 48V, 5A
Safety Certification UL, CSA (cUL)
EMI Compliance FCC Class A
Testing Standards ANSI/IEEE C62.41 (1980); ANSI/IEEE C62.45 (1987); IEC 801-2, 801-4, 801-5
Communication RS-232 serial port (DB-25), plus contact closures
Environmental
Operating Temperature 0† to 40† C
Storage Temperature -20† C to +60† C  (-20† C to +40† C if battery is not removed.)
Relative Humidity 0 to 95% without condensation
Audible Noise (dBA) 48 50 50 50 50 51 50 52
Altitude  3,050 m (10,000 ft) maximum
All specifications subject to change without notice.
  * Includes front panel keypad and display.
** 1.8, 2.1 and 3.1kVA models can be configured with 21.25 depth.  Consult factory.
 

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Bomara Associates Phone: 800.5BOMARA (800.526.6272) Phone: 978.452.2299 Fax: 978.452.1169 3 Courthouse Lane, Chelmsford, MA 01824 USA
email: bobr@bomara.com      web: www.bomara.com
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