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1. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4
Low-voltage electrical installations –
Protection for safety
Bernd Siedelhofer, ABB STOTZ-KONTAKT, Heidelberg/Germany

2. © ABB STOTZ-KONTAKT GmbH
February 2014 | page 2
ABB
Power and automation technology in five divisions
Power Products Power Systems
Low Voltage
Products
Discrete Automation
and Motion
Process
Automation

3. © ABB STOTZ-KONTAKT GmbH
February 2014 | page 3
ABB in Germany
ABB STOTZ-KONTAKT, Heidelberg
Low Voltage
Products
ABB STOTZ-KONTAKT
Heidelberg
Germany
Dipl.-Ing. Bernd Siedelhofer
Low-voltage Installation Technology
 bernd.siedelhofer@de.abb.com

4. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4
IEC 60364 Low-voltage electrical installations
 Group 4 Protection for safety
 Part 4-41 Protection against electric shock
 Part 4-42: Protection against thermal effects
 Part 4-43: Protection against overcurrent
 Part 4-44: Protection against voltage disturbances
and electromagnetic disturbances
Structure
March 28, 2014 | Slide 4
© ABB Group

5. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4
IEC CLC VDE/DKE
IEC 60364-4-41 HD 60364-4-41 VDE 0100-410
IEC 60364-4-42 HD 60364-4-42 VDE 0100-420
IEC 60364-4-43 HD 60364-4-43 VDE 0100-430
IEC 60364-4-44
HD 60364-4-442 VDE 0100-442
HD 60364-4-443 VDE 0100-443
HD 60364-4-444 VDE 0100-444
HD 60364-4-45 VDE 0100-450
IEC 60364-4-46 HD 60364-4-46 VDE 0100-460
Relation to CLC and DKE
March 28, 2014 | Slide 5
© ABB Group

6. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-41
 current version: 5th edition
 date of issue: 2005-12
 stability date: 2015
 deals with protection against electric shock as applied to
electrical installations
 based on IEC 61140 which is a basic safety standard that
applies to the protection of persons and livestock (IEC
61140 provides fundamental principles and requirements
that are common to electrical installations, electrical
equipment and for their co-ordination)
Protection against electric shock
March 28, 2014 | Slide 6
© ABB Group
GROUP SAFETY
PUBLICATION

7. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-41
 fundamental rule of protection against electric shock:
 protection under normal conditions is provided by basic
protective provisions ( basic protection) and protection
under single fault conditions is provided by fault protective
provisions ( fault protection)
 alternatively, protection against electric shock is provided
by an enhanced protective provision, which provides
protection under normal conditions and under single fault
conditions.
Protection against electric shock
March 28, 2014 | Slide 7
© ABB Group
hazardous-live-parts must not be accessible and accessible
conductive parts must not be hazardous live, neither under
normal conditions nor under single fault conditions

8. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-41
 concept for the protection against electric shock:
Protection against electric shock
March 28, 2014 | Slide 8
© ABB Group
Protection against electric shock
basic
protection + fault
protection
• automatic disconnection of supply
• double or reinforced insulation
• electrical separation (mit einem Verbrauchsmittel)
• extra-low-voltage provided by SELV and PELV
• non-conducting location
• protection by earth-free local equipotential bonding
• electrical separation for the supply of more than one
item of current-using equipment
Annex C

9. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-41
Protection against electric shock
March 28, 2014 | Slide 9
© ABB Group
IF
IPE
exposed
conductive
part
IK
RB
L1
L2
L3
PE
N
IΔN
IK
basic isolation
class I equipment
PE
N
L
IΔN ≤ 30 mA

10. KEA Workshop on Electro-Technical Regulation 2014
additional protection by RCD with residual current up to 30 mA
IEC 60364-4-41
Protection against electric shock
March 28, 2014 | Slide 10
© ABB Group
typical RCD designs:
types of RCDs:
• type AC
• type A
• type B/B+
• type F
• type S

11. KEA Workshop on Electro-Technical Regulation 2014
DIN VDE 0100-410 (VDE 0100-410)
 German version of
 HD 60364-4-41:2007
+ special national conditions (SNCs) for Germany
which is
 IEC 60364-4-41:2005
+ common modifications for CENELEC
IEC 60364-4-41
VDE equivalent in Germany
March 28, 2014 | Slide 12
© ABB Group

12. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-42
 current version: 3rd edition
 date of issue: 2010-05
 stability date: 2015
 applies to electrical installations with regard to measures
for the protection of persons, livestock and property against
 thermal effects, combustion or degradation of
materials, and risk of burns caused by electrical
equipment,
 flames in case of a fire hazard being propagated from
electrical installations to other fire compartments
segregated by barriers which are in the vicinity, and
 the impairment of the safe functioning of electrical
equipment including safety services
Protection against thermal effects
March 28, 2014 | Slide 13
© ABB Group

13. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-42
 main clauses:
 Protection against fire caused by electrical equipment
 Precautions where particular risks of fire exist
 Protection against burns
 Protection against overheating
Protection against thermal effects
March 28, 2014 | Slide 14
© ABB Group

14. KEA Workshop on Electro-Technical Regulation 2014
DIN VDE 0100-420 (VDE 0100-420)
 German version of
 HD 60364-4-42:2011
+ special national conditions (SNCs) for Germany
which is
 IEC 60364-4-42:2010
+ common modifications for CENELEC
IEC 60364-4-42
VDE equivalent in Germany
March 28, 2014 | Slide 16
© ABB Group

15. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-43
 current version: 3rd edition
 date of issue: 2008-08 + Corr. 2008-10
 stability date: 2018
 provides requirements for the protection of live conductors
from the effects of overcurrents
 describes how live conductors are protected by one or
more devices for the automatic disconnection of the supply
in the event of overload and short-circuit except in cases
where the overcurrent is limited or where the conditions
described in “Omission of devices for protection against
overload” or “Omission of devices for protection against
short-circuit” are met
 includes coordination of overload protection and short-
circuit protection
Protection against overcurrent
March 28, 2014 | Slide 17
© ABB Group

16. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-43
 main clauses:
 Requirements according to the nature of the circuits
 Nature of protective devices
 Protection against overload current
 Protection against short-circuit currents
 Coordination of overload and short-circuit protection
 Limitation of overcurrent by characteristics of supply
Protection against overcurrent
March 28, 2014 | Slide 18
© ABB Group

17. KEA Workshop on Electro-Technical Regulation 2014
DIN VDE 0100-430 (VDE 0100-430)
 German version of
 HD 60364-4-43:2010
+ special national conditions (SNCs) for Germany
which is
 IEC 60364-4-43:2008 + Corr. 2008-10
+ common modifications for CENELEC
IEC 60364-4-43
VDE equivalent in Germany
March 28, 2014 | Slide 20
© ABB Group

18. KEA Workshop on Electro-Technical Regulation 2014
IEC 60364-4-44
 current version: 2nd edition
 date of issue: 2007-08 + Corr.1:2010-05 + Corr.2:2011-10
 stability date: 2015
 covers the protection of electrical installations and measures
against voltage disturbances and electromagnetic disturbances
 the requirements are arranged into four clauses:
 442 Protection of low-voltage installations against temporary
overvoltages due to earth faults in the high-voltage system
and due to faults in the low-voltage system
 443 Protection against overvoltages of atmospheric origin or
due to switching
 444 Measures against electromagnetic influences
 445 Protection against undervoltage (former part -45)
Protection against voltage disturbances and
electromagnetic disturbances
March 28, 2014 | Slide 21
© ABB Group

19. KEA Workshop on Electro-Technical Regulation 2014
DIN VDE 0100-442 (VDE 0100-442):2013-06
 HD 60364-4-442:2012
+ special national conditions (SNCs) for Germany
which is
 IEC 60364-4-44:2007, clause 442 “TOV”
+ common modifications for CENELEC
DIN VDE 0100-443 (VDE 0100-443):20007-06
 HD 60364-4-443:2006
+ special national conditions for Germany
which is
 IEC 60364-4-44:2001 + A1:2003, clause 443 “Protection
against transient overvoltages“
+ common modifications for CENELEC
IEC 60364-4-44
VDE equivalent in Germany
March 28, 2014 | Slide 23
© ABB Group

20. KEA Workshop on Electro-Technical Regulation 2014
DIN VDE 0100-444 (VDE 0100-444):2010-10
 HD 60364-4-444:2010-05 + Corr. 2010-07
+ special national conditions (SNCs) for Germany
which is
 IEC 60364-4-44:2007, clause 444 “EMC”
+ common modifications for CENELEC
DIN VDE 0100-450 (VDE 0100-450):1990-03
 HD 384.4.45:1988
which is
 IEC 364-4-45:1984 “Protection against undervoltage”
IEC 60364-4-44
VDE equivalent in Germany
March 28, 2014 | Slide 24
© ABB Group

21. KEA Workshop on Electro-Technical Regulation 2014
 at present, there is no part -46 on IEC level
 former IEC 60364-4-46 was integrated in IEC 60364-5-53:2001
DIN VDE 0100-460 (VDE 0100-460):2002-08
 Titel:
Protection for safety - Isolation and switching
 HD 384.4.46:2001
+ special national conditions for Germany
which is
 IEC 60364-4-46:1981
+ common modifications for CENELEC
IEC 60364-4-46
VDE equivalent in Germany
March 28, 2014 | Slide 25
© ABB Group

22. KEA Workshop on Electro-Technical Regulation 2014
 main clauses:
 General requirements
 Isolation
 Switching off for mechanical maintenance
 Emergency switching including emergency stopping
 Functional switching (control)
IEC 60364-4-46
VDE equivalent in Germany
March 28, 2014 | Slide 26
© ABB Group