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.
H02H 3/00 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
H02H 3/20 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess voltage
H02H 3/24 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to undervoltage or no-voltage
2t) value between the input power terminal and the output power terminal. The control device automatically turns the power switching circuit “OFF” whenever the load current exceeds a first value or the current squared time value exceeds a second value or an “OFF” signal is received from the one or more data interfaces, and automatically turns the power switching circuit “ON” whenever an “ON” signal is received from the one or more data interfaces.
G05D 3/12 - Control of position or direction using feedback
H02H 3/00 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
H01H 73/00 - Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
H05B 7/11 - Arrangements for conducting current to the electrode terminals
G06E 3/00 - Devices not provided for in group , e.g. for processing analogue or hybrid data
G05F 1/00 - Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
G01R 21/06 - Arrangements for measuring electric power or power factor by measuring current and voltage
H03K 17/082 - Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
H03K 17/18 - Modifications for indicating state of switch
H03K 17/691 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current
H03K 17/795 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
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