Instrument for lightning arrester monitor test

A lightning arrester monitor and instrument technology, applied in the direction of instruments, measuring devices, measuring electrical variables, etc., can solve the problems such as the inability to check the current meter of the arrester monitoring and the inability to guarantee the reliability of the arrester monitor, and achieve the effect of simple design and convenient installation.

Inactive Publication Date: 2009-11-25
SHANGQIU POWER SUPPLY ELECTRIC POWER OF HENAN
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing test instruments for arrester monitors can only complete the function of "checking the action performance of the discharge cou...

Method used

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  • Instrument for lightning arrester monitor test
  • Instrument for lightning arrester monitor test
  • Instrument for lightning arrester monitor test

Examples

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Embodiment Construction

[0009] The electrical principle of the present invention is as attached figure 2 As shown, the voltage regulator and step-up transformer are connected to the 220V AC power supply, the test power switch 5 is connected to the front of the voltage regulator, the current / counting function selection switch 6 passes through the charging resistor 7, the rectifying silicon diode 8, and a charging capacitor 13 9. Damping inductance 9 connects discharge counter trigger button 10, connects digital ammeter 14 through current-limiting resistor 11, adjustable resistor 12, and is connected at both ends of monitor, and current test function and counting function are synthesized into a circuit. Because the voltage of the counting function circuit reaches about DC 600V, in order to protect the electronic equipment in the current test circuit, a protective diode 15 is installed after the digital ammeter 14 in the protective current test circuit. The protective diode 15 requires a reverse voltage...

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Abstract

The invention provides an instrument for lightening arrester monitor test. The invention has the following key technology: synthesizing the current test function and a counting function into a circuit, the function is selected through a current/counting function selecting switch for respectively completing the current test and the counting function test; the current/counting function selecting switch is connected with a discharge counter triggering button through a charging resistor, a rectifier diode and a damping resistor, and is connected with a digital ammeter through a current limiting resistor and an adjustable resistor; two wires are used as the leading-out wires of the instrument for test according to the invention and are connected with two ends of the lightning arrester monitor. The instrument for lightening arrester monitor test according to the invention has the beneficial effects of simple design, convenient installation, capacity for testing the millammeter and the action counter of the lightning arrester monitor test. The peak current and the effective-value current can be switched freely according to the factory demand of the monitor. Action test can be executed to the action indicator of the monitor. The reliability of the lightning arrester monitor can be guaranteed effectively.

Description

technical field [0001] The present invention relates to a test instrument for electric power, which can complete all the tests required by the current regulations on monitors for lightning arresters. Background technique [0002] The arrester monitor, also known as the arrester leakage current and action recorder, is an instrument used in conjunction with the zinc oxide arrester in the high-voltage AC power system. The instrument is connected in series to the grounding circuit of the arrester. The monitoring ammeter in the monitor is used to monitor the leakage current (peak value) passing through the arrester under the operating voltage, and can judge whether the interior of the arrester is damp, whether the components are abnormal, etc.; the action counter records the number of overvoltage actions of the arrester. [0003] According to Article 21.0.5 of GB50150-2006 "Electrical Equipment Handover Test Standard for Electrical Installation Engineering", two tasks should be c...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 郑新才刘勋王丽君张凯
Owner SHANGQIU POWER SUPPLY ELECTRIC POWER OF HENAN
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