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4200FA Installation and Operation Manual 55
Crest Factor
2.5 – 3.0 within the kW range
Neutral Line Conductor
1.73 times line rating
Harmonic Voltage Distortion
1.5% max (linear load)
Inrush Current protection Automatic Transfer to bypass, then retransfer to inverter
Environment
Efficiency (Typical)
AC/DC/AC – See Table 5.10, DC/AC: 85%
Heat loss to be removed
See Table 5.10
Audible Noise
~65dB @ 1 meter from the front of the unit
Operating Temperature
32 – 104 °F (0 – 40 °C); optimal temperature is 77 °F (25 °C)
Operating Humidity
30 – 90% RH (non condensing)
Altitude
3
Less than 2000 meters
3
1 – Specified at rated conditions under balanced linear loads.
2 – Battery backup time may vary depending on the operating conditions and ambient temperature at the installation site. An initial
charge time of 24 hrs is necessary to obtain proper battery performance level before the unit is placed in operation.
3 – At 6600 ft. (2000 m) above sea level, output capacity should be derated by 3% (Consult factory for higher elevations).
4 – Prolonged operation at this level requires derating of the maximum Operating Temperature to 90
°
F ( 32
°
C).
5 – SHORT TERM operation only (e.g. Brownouts). Operation at this level requires derating the maximum Operating Temperature to 95
°
F ( 35
°
C).
4200FA Efficiencies and Thermal Losses at Various Loads 7.10
The tables below list typical efficiency at 100% load, and thermal loss at various loads, for the
15/25/30/50kVA units in three configurations:
• UPS without input/output internal transformers
• UPS with Internal input isolation transformer
• UPS with internal input isolation transformer and autotransformer
(NOTE: The efficiencies and thermal values listed are representative only. Individual performance may
be different due to variations in operating environment, manufacture, transformer type, and transformer
performance at different loads.)
7.10.1 Efficiency with No Internal Transformers
4200FA Series 15 kVA Int Batt 25 kVA Int Batt 30 kVA Int Batt 50 kVA Int Batt
100% Load * 87.5% 89.2% 87.5% 88.3%
*Contact the factory for additional information on efficiency vs. load curves.
Table 7.1 Thermal Loss in BTU/Hr. at Load (No Internal Transformers)
4200FA Series 15 kVA Int Batt 25 kVA Int Batt 30 kVA Int Batt 50 kVA Int Batt
100% Load 5849 8262 11,699 18,085
75% Load 4875 6455 9096 14,356
50% Load 4134 4964 7339 12,232
25% Load 3304 3873 6150 8108
0% Load 1,798 2,409 2,890 3,722