IEC 60255-21-1 Electrical Relays - Part 21: Vibration, Shock, Impact and Seismic Tests on Measuring Relays and Protection Equipment - Part One: Vibration Tests (Sinusoidal)

IEC 60255-21-1 Electrical Relays - Part 21: Vibration, Shock, Impact and Seismic Tests on Measuring Relays and Protection Equipment - Part One: Vibration Tests (Sinusoidal)

The IEC 60255-21-1 standard published by the International Electrotechnical Commission (IEC) describes the vibration, shock, impact and seismic requirements applicable to protection equipment. Two types of vibration tests are included in this standard:

IEC 60255-21-1 Electrical Relays - Part 21: Vibration, Shock, Impact and Seismic Tests on Measuring Relays and Protection Equipment - Part One: Vibration Tests (Sinusoidal)

  • Vibration response test
  • Vibration endurance test

The effects of vibrations on the tested specimen are checked during and after the vibration response test and after the vibration endurance test.

The standard in question is mainly based on the IEC 68-2-6 standard. The requirements apply only to measuring relays and protection equipment in new condition.

In general, the IEC 60255 standard contains test specifications for vibrations, shocks, jolts and earthquake resistance, which are applied to measuring relays and protection devices (with or without contacts).

It is not easy for companies to meet environmental and IEC international standard vibration requirements. In this respect, advanced laboratories guide companies throughout the process.

The vibration displacement and acceleration amplitudes are measured at the reference point. This is normally declared by the manufacturer. If the dimensional sample makes testing as a whole impossible, the product may be tested as functional subunits. The vibration test is performed on a measuring relay or protection equipment. Sinusoidal vibration tests are also performed with the following energizing amounts and loading values ​​applied to the appropriate circuits:

  • Auxiliary energizing entities
  • Output circuit loads
  • Input energizing quantities

During the vibration response test, the operating values ​​of the measuring relay or protection equipment are of the highest precision. When testing protection equipment that includes several measuring functions, vibration testing is done to check only the function that is most sensitive to vibration.

Vibration endurance testing is performed without energy quantities or loads connected to the measuring relay.

Our organization, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, on vibration, shock, impact and seismic effects on measurement relays and protection equipment within the scope of IEC 60255-21-1 standard. It also provides vibration (sinusoidal) testing services between tests.

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