Aging Test System for Varistor

Aging test system can produce AC and DC high voltage. Thermoelectric accelerated aging test can be carried out on Metal Oxygen Varistor. The full current, resistive current, capacitive current are calculated and P-t curve can be displayed online, the test system can meet the requirements of IEC 60099-4 and relevant standards.

Application

Power Systems & Surge Arresters:

Evaluate the aging mechanisms of grid lightning protection devices under long-term system voltage stress, such as increased power loss and reduced breakdown field strength.

New Energy & PV Inverters:

Test thermally protected metal oxide varistors (TFMOV) used in photovoltaic systems to ensure their reliability and weather resistance under harsh environmental conditions.

Industrial & Communication Power Supplies:

Ensure the long-term stability of surge protection circuits in communication equipment rooms and data center power systems.

Standards

The test system can meet the requirements of IEC 60099-4 and relevant standards.

Technical Parameters

Features

Thermal–Electrical Combined Aging:

The system can simultaneously apply high voltage (AC/DC) and high-temperature environments, accelerating the degradation process of the internal microstructure of the device.

Pulse Current Aging:

Simulates lightning strikes or power grid surges by applying thousands of continuous impulse current cycles to varistors, evaluating their degradation behavior under repeated surge stress.

Maintenance Information

Equipment Cleaning:

Regularly clean the interior of the test chamber, cooling fans, and ventilation openings. Remove metal oxide dust and debris generated during testing to prevent poor ventilation and excessive internal temperature rise.

Terminal Tightening:

Inspect the connection cables of the high-voltage generator, aging fixtures, and load terminals. Long-term high temperature and current stress may increase contact resistance and cause localized heating.

Fixture Contact Maintenance:

Check whether aging test fixtures and probes are oxidized or deformed. Frequent insertion/removal and high-temperature operation may reduce spring force or cause surface oxidation, leading to increased contact voltage drop.

FAQ

1. What is this product?

You are using an Aging Test System for Varistor, a specialized reliability testing device designed to evaluate the long-term electrical and thermal stability of metal oxide varistors (MOVs) and thermally protected MOVs under controlled aging conditions.

2. What is this product used for?

You can use it to perform accelerated aging tests on varistors by applying high voltage, surge pulses, and elevated temperature conditions. It is used to measure degradation behavior such as leakage current increase, varistor voltage drift, and nonlinear coefficient changes over time.

3. Why is this product important?

It allows you to simulate long-term operational stress in a shortened test cycle, helping to identify early failure risks and degradation mechanisms. This ensures product reliability, improves surge protection performance, and supports compliance with international safety and endurance standards.

4. What industries is this product suitable for?

You can use it in surge protection device manufacturing, power electronics, renewable energy systems (solar and wind), automotive electronics, telecommunications, industrial power supplies, and electrical safety certification laboratories.

5. What types of this product are available?

You can choose from multi-channel aging systems, high-voltage AC/DC combined aging models, pulse current aging systems, and fully automated platforms with temperature-controlled chambers, real-time parameter monitoring, and data logging software for long-term reliability analysis.