Powerware Ferrups FE/QFE UPS - Manual (Page 62)

Specifications
56 Powerware ® FERRUPS FE/QFE UPS (500 VA–18 kVA) User’s Guide
:
Rev A www.powerware.com
Table 11. Electrical Input and Output
Nominal Frequency Online: 60 Hz (FE) or 50 Hz (QFE) with nominal power line grid stability of ±0.005 Hz.
On inverter: 60 Hz (FE) or 50 Hz (QFE) ±0.03 Hz. Output frequency tracks input line frequency
up to limit, which is adjustable from ±0.01 Hz to ±3.00 Hz. Inverter turns on if line frequency
exceeds the selected limit.
Regulation ±3% load regulation (under any line, load, or battery condition to within -8.3% and +5% of
nominal)
Voltage Waveform Sine wave; <5% THD at rated linear loads, computer-grade power
Overload Capability On line (nominal Vac in): 150% surge and 125% for 10 minutes.
On inverter (nominal Vdc in): 150% surge and 110% for 10 minutes.
Overload operation is not thermally limited. The FERRUPS UPS microprocessor continuously
monitors output VA and sounds an alarm before loss of output voltage regulation occurs.
DC Input Protection DC fuse and battery charger fuse
Output Protection Output Protection: The ferroresonant transformer inherently limits current and provides
overload protection. The FERRUPS UPS has high AC and low AC output voltage alarms, as
well as an overload alarm. If the AC output voltage falls below the low AC output voltage
alarm setpoint, the UPS sounds an alarm after five seconds. If the AC output voltage falls
below the low AC output shutdown setpoint, the UPS sounds an alarm and shuts down.
Some models have output receptacles protected by fuses or circuit breakers.
Lightning and Surge
Protection The FERRUPS UPS provides 2000-to-1 spike attenuation. Tested using lightning standard
per ANSI/IEEE C62.41 Category A (6000V spike and 200A) and Category B (6000V spike
and 3000A) test, and ANSI/IEEE C62.45 test procedures.
Isolation, Including
Output Neutral to Ground
Bonding The FERRUPS UPS provides a true separately derived power source, as defined by National
Electrical Code Article 250-5d, with output neutral bonded to ground. There is no direct
connection between input and output, and less than 2 pF of effective input to output
capacitance.