98-19604J001.pdf

This is a source control drawing for an inverter/converter power supply unit rated at 60 Hz and 400 Hz, serving as a technical specification document for a federally contracted item.

The drawing specifies a power inverter/converter manufactured by Technology Research Corp (vendor part 29350 and 29340) with dual output frequencies of 60 Hz and 400 Hz. Key electrical specifications include: 120 VAC, 2-wire input with 5 kW @ 0.8 power factor, and 120/240 VAC 3-wire output with 3 kW @ 0.8 power factor. The unit requires reconnectable input from 120 VAC 2-wire to 120/240 VAC 3-wire with a switch in the inverter access door to prevent changing connections when the inverter is energized. Voltage adjustment range spans 2,114 to 126 volts for 120-volt connections and 2,228 to 252 volts for 240-volt connections. Output frequency stability is specified at <0.3% of rated frequency under short-term steady-state conditions and <0.5% under long-term conditions. Transient frequency response must not exceed ±1% with maximum recovery time of <0.1 seconds. The unit operates at temperatures from −25°F to +140°F at altitudes up to 8,000 feet and must comply with ASME Y14.100 drawing standards and MIL-STD-130 identification requirements. The approved source is restricted to Technology Research Corp, and substitution requires Project Manager approval from Expeditionary Energy & Sustainment Systems at Fort Belvoir, Virginia. Document control number is 98-19604, released for unlimited public distribution.