Load checking ammeter

Abstract

The invention aims to provide a load checking ammeter, which comprises a pair of test tongs, a ammeter and an operation rod, wherein the test tongs are positioned on the left and right sides of the upper end of the ammeter; the lower end of the ammeter is connected to the operation rod through a connecting rod; the ammeter is provided with a digital display block for displaying current values. The open test tongs and a measuring lead form an electronic closed loop, so that the inconvenience in opening and closing operation of a tong-type ammeter is improved, an operator can operate even not beside the lead, limitations on safety distances are eliminated, and the current strength of the lead with any voltage value positioned between openings can be directly detected; the operator can slide the test tongs slide on the lead through the insulated operating rod, and tested current values are measured and stored automatically through the ammeter, so that values can be read conveniently after the height is reduced; the telescopic insulated operating rod is adopted, so that limitations on distances are eliminated, and safety and convenience in measurement are realized. The load checking ammeter is simple in structure, and is convenient to operate; the current values of leads of any distances and any voltages can be measured safely and effectively.

Description

technical field [0001] The invention belongs to a current testing device, in particular to an open-type load checking ammeter. Background technique [0002] Under the existing measurement technology, for online current measurement, a clamp ammeter is generally used. In this operation process, the measurer generally holds the measuring device at the wire, and at the same time operates the opening and closing handle mechanism of the clamp meter to make the clamp magnetic circuit Open it, and then put the circuit under test into the magnetic circuit to measure the current value of the circuit under test. Because the clamp ammeter can measure the AC current value without cutting off the current, it is widely used. However, due to the need for the operator to operate beside the wire during measurement, the device cannot be used due to the limitation of the safety distance and operation method. It is used for long-distance measurement, or to measure the current value of high-volt...

AI Technical Summary

Problems solved by technology

Because the clamp ammeter can measure the AC current value without cutting off the current, it is widely used. However, due to the need for the operator to operate beside the wire during measurement, the device cannot be used due to the limitation of the safety distance and operation method. For long-distance measurement, or to measure the current value of high-voltage wires

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