DRS Pivotal Power's 5 KW uninterruptible power supply (UPS) produces high-quality 400 hertz, 3-phase power which exceeds the stringent system requirements of MIL-STD-1399, Section 300, Type III specification for critical naval shipboard applications. In the event of loss of input power, the UPS is capable of supplying the rated output power for 15 minutes minimum, using storage batteries, without any transient interruption.
The power conversion of the UPS is based on switch mode technology using high-frequency pulse-width modulation (PWM) which provides sinusoidal output voltage with very low distortion even under adverse non-linear loading conditions. The UPS output is controlled using a microprocessor based system which provides a high precision regulation and a very fast transient response. The use of power insulated gate bipolar transistors (IGBTs) as switching elements ensures high conversion efficiency.
The construction of the UPS is modular with draw-out 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 is fully qualified for military applications.