Voltage bus protection and isolation device
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Oct 28, 2015
filing date -
Oct 7, 2014
priority date (Note) -
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Abstract
A voltage bus protection/isolation device includes voltage input and output terminals, a disconnect circuit connected between the voltage input and output terminals, a voltage monitoring circuit connected to the voltage input terminal, a resistive circuit connected between a first and second return terminals, a current squared time monitoring circuit connected to the resistive circuit, a control circuit connected, and a fault latch circuit connected to the monitoring circuits, the disconnect circuit and the control circuit. The fault latch circuit: turns the disconnect circuit “OFF” thereby isolating the voltage input terminal from the voltage output terminal whenever the monitoring circuits detect an over voltage condition, an under voltage condition or an overload condition, or an “OFF” signal is received from the control circuit; and turns the disconnect circuit “ON” thereby connecting the voltage input terminal to the voltage output terminal whenever an “ON” signal is received from the control circuit.
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