Overvoltage protector
First Claim
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1. Overvoltage protector with a housing and with at least one overvoltage limiter located in the housing, wherein:
- a monitoring component is assigned to the overvoltage limiter and detects a current (i) flowing via the overvoltage limiter,the monitoring component is an optical coupler which is connected in parallel to a resistor that is located in series with the overvoltage limiter, the monitoring component being operative for detecting current flowing through the resistor, andan evaluation unit is provided which is adapted for evaluating a signal of the monitoring component, the evaluation unit being electrically isolated from a discharge current path via which the current (i) detected by the monitoring component flows.
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Abstract
An overvoltage protector having a housing and at least one overvoltage limiter arranged in the housing, especially a gas-filled surge arrester (1), a suppressor diode (2) or a varistor. The functional ability and the state of the overvoltage protector can be controlled during operation by associating a monitoring component with the overvoltage limiter which detects a current (i) flowing over the overvoltage limiter component, and by providing an evaluation unit that evaluates the signal of the monitoring component.
10 Citations
6 Claims
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1. Overvoltage protector with a housing and with at least one overvoltage limiter located in the housing, wherein:
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a monitoring component is assigned to the overvoltage limiter and detects a current (i) flowing via the overvoltage limiter, the monitoring component is an optical coupler which is connected in parallel to a resistor that is located in series with the overvoltage limiter, the monitoring component being operative for detecting current flowing through the resistor, and an evaluation unit is provided which is adapted for evaluating a signal of the monitoring component, the evaluation unit being electrically isolated from a discharge current path via which the current (i) detected by the monitoring component flows. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification