1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 General notes on tests
6 Ratings
7 Classification
8 Marking and documentation
9 Construction
10 Clearances, creepage distances
and solid insulation
11 Protection against electric shock
12 Terminals and terminations
13 Screws, current carrying parts
and connections
14 Mechanical strength
15 Insulation resistance test and dielectric
strength test
16 Normal operation
17 Temperature rise
18 Short-circuit protection and short-circuit
withstand strength
19 Resistance to heat
20 Fire hazard
21 External influences
22 Electromagnetic compatibility
Annex AA (normative) - Additional test requirements
for PT systems already complying
with IEC 61534-21:2006
Annex ZA (normative) - Normative references to
international publications with their
corresponding European publications