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Harm of insulation working voltage to relay HKE
Categories:
relay HKE
Source:
Release time:
2022-07-28
The lead-out end of the non-sealed or sealed relay HKE exposed insulators are subject to long-term dust, water vapor environmental pollution and other factors, resulting in a decrease in the insulation compressive strength, and it is very easy to cause the insulation penetration to fail. Therefore, the following aspects should be paid attention to:
1. Sufficient creepage distance: generally not less than 3 mm;
2. Sufficient dielectric compressive strength: the middle of the electrical conductor without electrical equipment contact exceeds AC2000V, and the middle of a group of contacts exceeds AC1000V.
3. Long-term working ability to withstand climatic stress: the electromagnetic coil can be removed from mildew and broken, and the insulation and anti-electricity level is stable and reliable for a long time.
4. The hazard of the contact output (replacement of the power circuit) load.
The key is the contact load characteristics, such as: lamp load, motor load, inductance, AC contactor (relay HKE) electromagnetic coil, inductive load load, etc.; contact load value (open circuit voltage value, cable digital TV current value) , such as: low frequency load, dry power circuit load, small current load, high current load, etc.
All automated machinery must further evaluate the specific required load characteristics and the size of the load value, and it is very important to use suitable relay HKE products. The invalidity or reliability of relay HKE depends on whether the contact can perform the required switching power circuit function. If the specific load of the conversion is inconsistent with the conversion load required by the relay HKE used, the reliability will be impossible.
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