DIN EN 61241-4 : 2007

Name: DIN EN 61241-4 : 2007
Brand: VDE

Superseded

View Superseded by

ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - PART 4: TYPE OF PROTECTION 'PD'

Superseded date

05-01-2015

Published date

01-12-2013

Publisher

Verband Deutscher Elektrotechniker

1 Scope
2 Normative references
3 Definitions
4 Pressurization principle
   4.1 Protective gas
   4.2 Automatic disconnection
   4.3 Cleaning
   4.4 Discharge of protective gas
5 General constructional requirements
   5.1 Electrical performance of apparatus
   5.2 Mechanical strength
   5.3 Apertures
   5.4 Electrical connections to enclosures
   5.5 Doors and covers
6 Temperature limits
7 Safety provisions and safety devices (except for static
   pressurization)
   7.1 General
   7.2 Pressure- or flow-activated devices
   7.3 Electrical supply
   7.4 Switching off electrical supply
   7.5 Failure of pressurization
   7.6 Level of overpressure
   7.7 Possible sources of ignition
   7.8 Enclosed components
   7.9 Separate enclosures
8 Safety provisions and safety devices for static pressurization
9 Supply of protective gas
   9.1 Type of gas
   9.2 Second source of supply
   9.3 Temperature
10 Verification and tests
   10.1 General
   10.2 Type verification and tests
   10.3 Overpressure test
   10.4 Minimum overpressure test
   10.5 Leakage test
   10.6 Impact test
   10.7 Routine tests
11 Marking
   11.1 Pressurized enclosure
   11.2 Additional marking
   11.3 Pressurized enclosures protected by static pressurization
   11.4 Any other marking required
Annex A (normative) Ducts for protective gas supply
Annex B (normative) Installation requirements for pressurization
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Annex ZZ (informative) Coverage of Essential Requirements of
         EC Directives

Presents requirements on the design, construction, testing and marking of electrical apparatus for use in combustible dust atmospheres in which a protective gas (air or inert gas), maintained at a pressure above that of the external atmosphere, is used to prevent the entry of dust which might otherwise lead to the formation of a combustible mixture within enclosures which do not contain a source of combustible dust.

DevelopmentNote	Supersedes DIN IEC 31H-67-CD. (09/2004) A transition period, as set out in DIN EN 60079-2 issue 05-2015, exists until 25-08-2017. (05/2015)
DocumentType	Standard
PublisherName	Verband Deutscher Elektrotechniker
Status	Superseded
SupersededBy	DIN EN 60079-2 : 2015 COR 1 2016

Standards	Relationship
NF EN 61241-4 : 2007	Identical
IEC 61241-4:2001	Identical
NBN EN 61241-4 : 2007	Identical
I.S. EN 61241-4:2007	Identical
VDE 0170-15-4 : 2007	Corresponds
UNE-EN 61241-4:2007	Identical
EN 61241-4:2006	Identical
BS EN 61241-4:2006	Identical

VDI 2263 Blatt 7:2010-07

Dust fires and dust explosions - Hazards - assessment - protective measures - Dust fires and explosion protection in spraying and drying integrated equipment