BS 7739-1:1994

Committees responsible
National foreword
Specification
1. Scope
2. Normative references
3. Definitions
4. Requirements
5. Specific requirements
6. Tests
7. Specific tests
Annexes
A. (normative) Chronology of tests
B. (normative) Instructions for use
C. (normative) Sampling procedure
D. (normative) Mechanical shock test
E. (normative) Symbol for marking
F. (normative) In-service care
Tables
1. Climatic categories
2. Minimum length of the insulating element (L1 min.)
3. Maximum length of bare position of contact electrode
4. Electrode separation distances (horizontal distance)
5. Protection against bridging narrow point spacings
     for testing
Figures
1. Detectors
2. Test set-up for measuring function voltages
3. Circuit connections for function tests
4. Test set-up for measurement of clear perceptibility
     of visual indication
5. Test set-up for measurement of clear perceptibility
     of audible indication
6. Curves of measurement of response time
7. Test set-up with bars for testing of bridging
     protection
8. Arrangement for testing bridging protection of
     outdoor type detector
9. Test for grip force
10. Curve of test cycle for climatic resistance
11. Test set-up for dielectric strength for indicator
     casing
A.1 Sequential order for performing tests
D.1 Pendulum method for shock testing
E. Symbol for marking

Applicable to portable voltage detectors with or without built-in power sources, to be used on electrical systems for voltages of 1 kV to 420 kV a.c. operating between 15 Hz to 60 Hz.