Uninterruptible power supply systems and enclosures

Details Uninterruptible power supply systems and enclosures Uninterruptible power supply systems and enclosures

2007-04-10

2007-04-10

Sircus, Brian (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

C439S924100

Reexamination Certificate

active

10690726

ABSTRACT:
One embodiment of the invention provides a UPS including a precharge circuit and a battery pack sensor electrically coupled to the precharge circuit. The sensor senses the presence of an extra battery pack. The precharge circuit includes: a first precharge contact; a capacitor having first and second leads, the first lead electrically coupled to the first contact; a second precharge contact electrically coupled to the second lead of the capacitor; a current limiting circuit having first and second leads, the first lead of the current limiting circuit electrically coupled to the first lead of the capacitor; and a third precharge contact electrically coupled to the second lead of the current limiting circuit. The UPS can further include an enclosure having a housing and a battery connector integral to the housing, the battery connector adapted to receive the first, second and third precharge contacts.

REFERENCES:
patent: 5174787 (1992-12-01), Shirai et al.
patent: 5216371 (1993-06-01), Nagai
patent: 5619076 (1997-04-01), Layden et al.
patent: 5821636 (1998-10-01), Baker et al.
patent: 6204574 (2001-03-01), Chi
patent: 6310783 (2001-10-01), Winch et al.

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