What is the insulation testing standard for DCY160F-31.5-5N reducer after moisture exposure

The insulation testing core of DCY160F-31.5-5N reducer is designed for built-in motors (if integrated with motors) or electrical components. The standard is based on insulation resistance values and testing conditions, and is implemented in accordance with industrial electrical equipment insulation specifications.
1、 Testing objects and core standards

Test object: The internal motor winding, junction box terminal, and casing of the gearbox. If it is a pure mechanical gearbox (without electrical components), only mechanical drying needs to be confirmed, and insulation testing is not required.

Insulation resistance standard: tested with a 500V megohmmeter, and qualified if the insulation resistance value is ≥ 1M Ω at room temperature (20-30 ℃); If the environmental humidity is greater than 60%, the minimum allowable value is ≥ 0.5M Ω, but subsequent drying and retesting are required.

Unqualified judgment: If the insulation resistance is less than 0.5M Ω or the pointer continues to drop during testing, it indicates that the internal moisture has not been completely removed, and there is a risk of leakage.

2、 Testing condition requirements

Environmental conditions: The testing should be conducted in a dry and ventilated environment, avoiding rainy and high humidity (>75%) environments to prevent moisture from affecting the results.

Equipment status: After drying, the reducer is cooled to room temperature (below 40 ℃), the water and oil containing fluids are drained, and the electrical components (such as junction boxes) are free of water and oil stains.

Instrument requirements: Use a calibrated and qualified 500V megohmmeter, with good contact between the instrument terminal and the detection point to avoid false connections that may cause reading distortion.

3、 Testing operation specifications

Disconnect the gearbox from the external power supply, remove the junction box cover, and clean the oil and dust on the surface of the terminals.

The "L" end of the megohmmeter is connected to the motor winding terminal, and the "E" end is connected to the gearbox housing (the surface paint needs to be scraped off to ensure metal contact).

Shake the megohmmeter at a constant speed (about 120 revolutions per minute) for 1 minute, then read the value and record the detected temperature and humidity.

If the detection value does not meet the standard, it needs to be re dried and retested. It is forbidden to operate directly with power on.