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EX Electrical Equipment

DSEAR > ATEX Equipment > EX Electrical Equipment

The Standards for electrical equipment will be used and applied

There are eight electrical protection concepts. The concepts are:


Protection Concept		Zone(s)	Equipment Category
Intrinsic Safety	ia	0,1,2	1
Intrinsic Safety	ib	1,2	2
Flameproof	d	1,2	2
Increased Safety	e	1,2	2
Purged & Pressurised	p	1,2	2
Powder Filled	q	1,2	2
Encapsulated	m	1,2	2
Oil Immersion	o	1,2	2
Non Sparking	n	2	3

Protective Measures

Protective measures shall be considered

Ensure ignition sources can not arise
Ensure ignition sources can not become effective
Prevent explosive atmosphere reaching ignition sources
Contains the explosion and prevents flame propagation

Constructional Requirements

Category 1 not more than 10% in total of aluminium,magnesium, titanium and zirconium; and not more than 7.5% of magnesium, titanium and zirconium.
Category 2 not more than 7.5% magnesium
Category 3 no requirement

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