Over-voltage protection device

Details Over-voltage protection device Over-voltage protection device

1976-02-19

1978-02-07

Miller, J D

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361128, H02H 322

Patent

active

040729982

ABSTRACT:
In an over-voltage protection device which includes a plurality of stacks of series-connected, substantially identical surge arrester sections, each comprising an insulated casing containing a voltage-dependent resistor with a spark gap assembly, which sections are mutually electrically connected at their upper and lower ends, there is provided a triggering circuit in parallel with the arrester stacks which includes a plurality of series-connected control spark gaps corresponding to the number of arrester sections in each arrester stack and a triggering resistor connected in series with the control spark gaps. Cross-connections containing triggering impedances extend from a connection point between two control spark gaps to the corresponding connection point between two arrester sections of each of the parallel stacks. Control impedances are connected in parallel with the spark gap. The triggering impedances are constituted by resistors.

REFERENCES:
patent: 2608600 (1952-08-01), Vorts et al.
patent: 3094648 (1963-06-01), Nilsson
patent: 3566197 (1971-02-01), Nilsson et al.
patent: 3657594 (1972-04-01), Latal

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