Foreword
Cooperating organizations
Specification
Section one. General
0. Introduction
1. Scope
2. Definitions
Section two. Requirements for all ESH devices
3. General
4. Grading
5. Construction
6. Terminations
7. Tests
8. Test methods
9. Marking
Section three. Additional requirements for ESH devices
for use in hazardous areas
10. General
11. Types of protection
12. Terminations
13. Temperature classification
14. Type test to establish the maximum temperature
of the surface to be heated
15. Marking
Appendix
A. Guidance regarding certification
Tables
1. Degree of water resistance
2. Degree of mechanical strength
3. Minimum tensile breaking loads
4. Temperature correction factors for converting
resistances, at various temperatures, of annealed
high conductivity copper of 100 % conductivity to
the standard reference temperature of 20 deg C
5. Conditioning treatments
6. Proof loads for deformation test
7. Heights of fall for impact test
Figures
1. Impact test apparatus
2. Low temperature bend test apparatus
3. Apparatus for determining relationship between
electrical loading and temperature of surface to
be heated
4. Typical graphs of TL against TV
5. Typical graph showing variation of constructional
material temperature (TL) with electrical loading
for different values of test place temperature (TV)
6. Typical graphs of TS against TV
7. Typical graph showing variation of sample surface
temperature (TS) with electrical loading for
different values of test plate temperature (TV)