BS EN 60255-21-1:1996

National foreword
Committees responsible
Clause
1 Scope
2 Object
3 Definitions
3.1 Vibration test (sinusoidal)
3.2 Vibration response test
3.3 Vibration endurance test
3.4 Fixing point (*)
3.5 Measuring points (*)
3.6 Check point (*)
3.7 Reference point (*)
3.8 Sweep-cycle (*)
3.9 Distortion (*)
3.10 Cross-over frequency
3.11 Standard acceleration of gravity
4 Requirements for vibration tests (sinusoidal)
4.1 Test apparatus and mounting
4.2 Test severity class
4.3 Test procedure
5 Criteria for acceptance
5.1 Acceptance criteria for vibration response test
5.2 Acceptance criteria for vibration endurance test
Appendix A Output circuit response during vibration
            response test

Includes the acceptance criteria to be satisfied during and after testing. Also specifies test severity classes for the relays; and covers both vibration response and vibration endurance tests as in Part 2.1Fc of BS 2011.

This standard is part of a series specifying the vibration, shock, bump and seismic requirements applicable to measuring relays and protection equipment (with or without contacts).

This standard includes two types of vibration tests: the vibration response test and the vibration endurance test, and is generally based upon IEC 68-2-6.

The requirements of this standard are applicable only to measuring relays and protection equipment in a new condition.

The tests specified in this standard are type tests.