Surge Voltage Generator for Pulsing Grounded and Ungrounded Electrical Equipment.
Patent, Filed 30 Sep 94, patented 16 Jul 96,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A coupling circuit receives a high voltage surge wave and injects it into one or more power lines of a single-phase or three-phase power supply circuit, either line-to-line or line-to-ground. The coupling circuit may have a surge coupler including a series connection of a gas tube and a coupling capacitor, and preferably a rectifier, and a shunt resistor for discharging the coupling capacitor. A one-stage or two-stage surge back filter across the power lines protects the power source from the surge wave. Each surge back filter may have series inductors, and shunt surge suppression circuits, which may each include a series combination of a capacitor and a resistor, in parallel with at least one metal-oxide varistor MOV or a cluster of MOVs. A grounding suppressor connected from a power line to ground may include gas tubes andor MOVs, inductors and resistors. Risetime adjusting circuits including resistors and capacitors may be connected between the power lines andor between the power lines and ground.
- *PULSE GENERATORS
- *HIGH VOLTAGE
- *COUPLING CIRCUITS
- *ELECTRICAL GROUNDING
- GROUND LEVEL
- TRANSMISSION LINES
- POWER SUPPLIES
- ELECTRIC POWER
- Electrical and Electronic Equipment