Method and apparatus for connection and disconnection of batteri

Details Method and apparatus for connection and disconnection of batteri Method and apparatus for connection and disconnection of batteri

1994-12-19

1997-04-08

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

One source floats across or compensates for other source

307112, 307116, 307119, 307125, 307134, 307139, 307141, 307 12, 320 1, H01H 332

Patent

active

056190760

ABSTRACT:
Connection of batteries to the DC bus lines across which capacitors are connected in power systems, such as uninterruptible power systems, is carried out using an auxiliary switch which is controlled to connect the batteries to a DC bus line through a precharge resistor momentarily before connection is made through a main connector. The preconnection of the batteries through the precharge resistor provides a controlled rate of charge of the capacitors before closing of the main connector to thereby avoid excessive surge currents. When the main connector is opened, as when the power system is prepared for transportation or long term storage, the auxiliary switch interrupts the current path from the battery through the precharge resistor and provides a current path from the DC bus line through a discharge resistor to ground to bleed down the charge on the capacitors to a desired level within a selected period of time.

REFERENCES:
patent: 3666961 (1972-05-01), Bogue et al.
patent: 4618803 (1986-10-01), Hardy
patent: 5099187 (1992-03-01), Rippel
patent: 5144163 (1992-09-01), Matsuzawa
patent: 5315533 (1994-05-01), Stich et al.
A copy of pp. 10 and 11 of brochure by Anderson Power Products, 1994 and earlier, showing SB connectors.

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