Protector for over tensions of industrial and home networks

Details Protector for over tensions of industrial and home networks Protector for over tensions of industrial and home networks

2007-10-16

2007-10-16

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

10973645

ABSTRACT:
There are multiple distortions and anomalies during the operation of the electric energy sources. The anomaly that with more incidence produces destruction is the over voltage, when the voltage of the feeder source goes over the maximum level supported by the isolation system of one equipment or device. A device is provided to protect industrial and domiciliary installations against over voltages. This device is built with passive elements, i.e., resistors, diodes, Zener Diodes and by controllable interrupters by the use of gate currents. This device is connected to the network as protection. When a voltage level higher than the pre-selected and adjusted level appears in the network, the protection produce a controlled short-circuit in the network that is cleared by a thermo magnetic interrupter that is part of the circuit to be protected, achieving in this way the over voltage clearing. The protection result is very effective, i.e. protects against over voltage to adjusted levels to a level closer to the maximum operation level of the devices that are connected to the network.

REFERENCES:
patent: 4586104 (1986-04-01), Standler
patent: 4644437 (1987-02-01), Robe
patent: 5570260 (1996-10-01), Kanai et al.

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