Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1990-09-20
1992-11-10
Pellinen, A. D.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 66, 361 94, H02J 900
Patent
active
051626640
ABSTRACT:
A circuit arrangement is used to interface a fault-powered circuit breaker trip unit to a communication network. The circuit arrangement includes a diode protected line which draws power from the trip unit, a battery acting as a backup power source and a control circuit, responsive to the trip unit, which detects a trip unit alarm condition, receives data from a circuit breaker trip unit and processes the data for subsequent use. In response to the control circuit detecting the trip unit alarm condition, a switch circuit enables the backup power source such that power is provided to the control circuit after the trip unit alarm condition is received so that the control circuit can process the received data after the power provided by the trip unit expires.
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Durivage, III Leon W.
Haun Andy A.
Tessmer Earl J.
Crawford Robert J.
Fleming Fritz M.
Irfan Kareem M.
Pellinen A. D.
Square D Company
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