A relay electrical life load test system

By designing a relay electrical life load testing system that automatically controls voltage and current output, the problems of low efficiency and arcing damage caused by manual adjustment in existing technologies have been solved, achieving efficient and accurate relay testing.

CN224758683UActive Publication Date: 2026-09-15SHENZHEN AUTO AUTOMATION TECH CO LTD
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Patent Information

Application Number
CN202522098211.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-28
Publication Date
2026-09-15
Estimated Expiration
2035-09-28

AI Technical Summary

Technical Problem

Existing load testing methods for high-power relays rely on manual adjustment of voltage and current, which makes it difficult to automate and achieve precise control, resulting in low testing efficiency and the potential for arcing damage to the relay.

Method used

A relay electrical life load testing system was designed, which includes a transformer circuit, a high-low voltage switching circuit, a multi-channel switching circuit for the relay under test, and a phase acquisition circuit. It realizes automatic control of voltage and current output, supports parallel testing of multiple relays, and adjusts the 0-degree phase angle of the load voltage through the phase acquisition circuit to reduce arcing damage.

Benefits of technology

It enables automated and precise control testing of relays, improves testing efficiency, and reduces arcing damage to relays during testing.

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Abstract

The utility model discloses a relay electric life load test system, include: voltage transformation circuit, high low voltage switching circuit, the relay to be measured multichannel switching circuit, first road relay to be measured and second road relay to be measured, wherein, high low voltage switching circuit and the relay to be measured multichannel switching circuit are connected, the relay to be measured multichannel switching circuit switches first road relay to be measured and / or second road relay to be measured respectively, first road relay to be measured is connected with first positive and negative control module and second positive and negative control module, second road relay to be measured is connected with third positive and negative control module and fourth positive and negative control module, the utility model discloses through voltage transformation circuit, high low voltage switching circuit and the relay to be measured multichannel switching circuit can fast selection multichannel relay to be measured and test, can through the phase acquisition circuit automatic regulation output load voltage sine wave phase angle, can reduce the arc injury of relay in the testing process.
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