SN EN 60255-21-1 : 1995

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

Describes the vibration, shock, bump and seismic requirements applicable to measuring relays and protection equipment. Gives vibration response and endurance test, fixing and measuring points, check and reference point, sweep-cycle, distortion, cross-over frequency and standard acceleration of gravity.