SN EN 60068-2-27 : 1993

National foreword
1. Object
2. General description
3. Definitions
4. Description of test apparatus
5. Severities
6. Pre-conditioning
7. Initial measurements
8. Conditioning
9. Recovery
10. Final measurements
11. Information to be given in the relevant
     specification
Appendices
A. Guidance
B. Shock response spectra and other characteristics
     of pulse shapes
C. Comparison between impact tests
Tables
I. Acceleration and duration of the pulse
II. Examples of pulse shapes and test severities
     typically employed for various applications
Figures
1. Final-peak saw-tooth pulse
2. Half-sine pulse
3. Trapezoidal pulse
4. Frequency characteristics of the measuring system
5. Shock response spectrum of a final-peak saw-tooth
     pulse
6. Shock response spectrum of a symmetrical half-sine
     pulse
7. Shock response spectrum of a symmetrical trapezoidal
     pulse
8. Framework or box containing oscillatory systems of
     which f1, f2 and f3 are examples of resonance
     frequencies
9a. Exciting pulse
9b. Responses for f1, f2 and f3
9c. Spectra which result from an infinite number of
     frequencies, with f1, f2 and f3 shown as finite
     points on the continuous curves
10. Framework containing damped multi-degree-of-freedom
     system
11. Shock response spectrum of a half-sine pulse with
     ripple
12. Spectrum of a final-peak saw-tooth 300 m/(s squared),
     18 ms pulse compared with the spectra of
     200 m/(s squared) half-sine pulses with durations
     between 3 ms and 20 ms

Determines the ability of a specimen to withstand specified severities of shock. Relevant for electrotechnical products liable to fairly rare one-off shocks. Not for evaluating mechanical strength or for quality control.