Foreword
1 Scope
2 Conditions of use
3 Terms and definitions
4 General
5 General conditions for type testing
6 Classification and rating
7 Marking and labelling
8 Clearances, creepage distances and solid
insulation
9 Accessibility of live parts
10 Provisions for earthing
11 Terminals and terminations
12 (not used)
13 Construction of socket-outlets
14 Resistance to ageing, resistance to humidity
and protection provided by enclosures
15 Insulation resistance and electric strength
16 Temperature rise
17 Breaking capacity of socket-outlets
18 Normal operation of socket-outlets
19 Connection of flexible cables and cable anchorage
20 Mechanical strength
21 Screws, current-carrying parts and connections
22 Resistance to heat
23 Resistance to abnormal heat and fire
24 Resistance to excessive residual stresses and to
rusting
25 (not used)
26 Cyclic loading test
Annexes
Annex A (normative) - The construction and calibration of
a calibrated link
Annex B (normative) - Measurement of clearances and
creepage distances
Annex C (normative) - Determination of the Comparative
Tracking Index (CTI) and Proof Tracking Index (PTI)
Annex D (normative) - Relation between rated impulse
withstand voltage, rated voltage and overvoltage
category
Annex E (normative) - Pollution degree
Annex F (normative) - Impulse voltage test
Annex G (normative) - Test plug for temperature-rise test
Annex H (informative) - Specific structure of BS EN 50525
and its derivation from British Standards and from
HD 21 and HD 22 (BS EN 50525-1:2011, National
Annex NA)
Annex I (normative) - Requirements for incorporated
electronic components
Bibliography