• Isolation switches for input, output and battery
• Draw-out sub-assemblies and printed wiring boards
• Built-in test (BIT) capability
• On-line maintenance of batteries and battery charger
• Output voltmeter
• LED status indication for input, output, back-up mode  operation, low battery, over current, over temperature and unit shutdown
• Fault signal for remote indication
• Circular coupling connectors for input and output
• Secondary fuse protection for output

DRS Pivotal Power's AC/DC uninterruptible power supply (UPS)
produces precise 60 Hz, 115 VAC output power and 28 VDC
output power to comply with the stringent system requirements
of STANAG 1008 specification for critical naval shipboard
applications.  Both outputs are electrically isolated from each
other.  In the event of loss of input power, the UPS is capable
of supplying the rated output power for 15 minutes minimum,
using internal batteries, with no transient interruptions.

The power conversion of the UPS is based on switch mode technology
using high-frequency pulse-width modulation (PWM) which provides
excellent DC output voltage regulation with low transients.  It also
provides sinusoidal AC output voltage with very low distortion even
under adverse non-linear loading conditions.  The use of power
MOSFETs as switching elements ensures high conversion efficiency.

The construction of the UPS is modular with draw-out type subassemblies for ease of maintenance.  The system reliability is an
order of magnitude greater than other static conversion
equipment due to the use of high reliability components and
stringent quality screening standards.

The UPS was developed and fully qualified for military
applications.