Standards & ATEX€¦ · Standards & ATEX . Standards PP-00044 C Objectives North American Agencies Enclosure Standards Agency Marks ... IEC 60529 - General enclosures

Standards PP-00044 C

Standards & ATEX

Standards PP-00044 C

Objectives

North American Agencies

Enclosure Standards

Agency Marks

European Standards

IEC IP Rating System

ATEX

CE Mark

Standards PP-00044 C

NEMA

National Electrical

Manufacturer’s Assoc.

EEMAC

Electrical/Electronic

Manufacturer’s Assoc. of Canada

UL

Underwriters Laboratories

CSA

Canadian Standards Assoc.

North American Agencies

Standards PP-00044 C

Testing

Perfomed By:

Testing

Reviewed

Manufacturing

Site Inspection

Field

Inspection Penalties Certification

North America

UL UL Lab Yes Yes Yes Yes UL

CSA CSA Lab Yes Yes Yes Yes CSA

NEMA Manufacturer No No No No Self Declared

EEMAC Manufacturer No No No No Self Declared

Certification Agency Differences and Similarities

North American Agencies

Standards PP-00044 C

United States

UL 50 - Enclosures for electrical equipment

UL 508A - Industrial Control panels

NEMA 250 - Enclosures for electrical equipment

Canada

CSA - C22.2 #14 - Industrial Control

CSA- C22.2 #40 - Cut-out, Junction & Pull boxes

CSA - C22.2 #94 - Special Purpose enclosures

Europe

IEC – 60529 – General enclosures

IEC – 60204 – Industrial Equipment

Enclosure Standards

Standards PP-00044 C

UL

listed

UL tested to

CSA standard

UL tested to

UL/CSA

standards

UL

recognized

component

UL tested to

UL/CSA

requirements

CSA tested to

UL standard

CSA certified

CSA tested to

UL/CSA

standards

Agency Marks

Standards PP-00044 C

NEMA, UL & CSA Type

Rating

Approximate IEC

IP Classification

Abbreviated Protection Description

1 IP23 Indoor personal protection from contact with contents

2 IP30 Indoor with limited protection from dirt, dust & water

3 IP64 Outdoor protection from rain, sleet, windblown dust, and ice damage

3R IP32 Outdoor protection from rain, sleet and ice damage

4 IP66 Indoor and outdoor protection from windblown dust, rain, splashing water, hose-directed water, and ice damage

4X IP66 Indoor and outdoor protection from corrosion, windblown dust, rain, splashing water, hose-directed water, and ice damage

6 IP67 Indoor and outdoor protection from hose-directed water, entry of water during submersion at a limited depth, and ice damage

12 IP55 Indoor protection from dust, falling dirt, and dripping non-corrosive liquids

13 IP65 Indoor protection against dust, spraying water, oil and non-corrosive liquids

NEMA, CSA, IP Specifications

Standards PP-00044 C

VDE (German)

IEC - international electrotechnical commission IEC 60529 - General enclosures

IEC 60204 - Industrial equipment

European Standards

Standards PP-00044 C

I P

Protection against

Solid Objects 0 - 6

Protection against

Liquids 0 - 7

IEC IP Rating System

Requirements in IEC 60529

6 6

Standards PP-00044 C

ATEX is the abbreviation for “Atmospheres Explosive” Directive 94/9/EC

In effect in Europe since 2003

Similar to the NEC Class and Division system and addresses potentially explosive atmospheres

Accepted widely outside of North America

Enclosure Protection Methods Protection methods vary based on the gas or dust and the

likelihood of combustion

The applicable standard for enclosures is EN60079

In place of a Class or Division, hazardous areas are rated based on their Zones

ATEX

Standards PP-00044 C

ATEX Zones

Area Area

Zone 0 A place where an explosive atmosphere consisting of air mixed with flammable vapor or mist in the form of a gas that is persistent for long periods of time or frequently

Zone 20 A place where an explosive atmosphere consisting of a cloud of combustible dust is present continuously or frequently for long periods of time

Zone 1 A place where an explosive atmosphere consisting of air mixed with flammable vapor or mist in the form of a gas that is likely to occur in normal operation occasionally

Zone 21 A place where an explosive atmosphere consisting of a cloud of combustible dust is likely to occur occasionally in normal operation

Zone 2 A place where an explosive atmosphere consisting of air mixed with flammable vapor or mist in the form of a gas that is not likely to occur in normal operation, but if it does would be present only for a short period of time

Zone 22 A place where an explosive atmosphere consisting of a cloud of combustible dust is not likely to occur in normal operation, but if it does would be present only for a short period of time

Standards PP-00044 C

ATEX Zones

A graphical depiction of the zone classification system

Standards PP-00044 C

ATEX Protection Types

Protection Method EN Standard IEC Standard

General Requirements EN 60079-0 IEC 60079-0

Flameproof enclosures “d” EN 60079-1 IEC 60079-1

Pressurized enclosures “p” EN60079-2 IEC 60079-2

Powder filling “q” EN60079-5 IEC 60079-5

Oil immersion “o” EN60079-6 IEC 60079-6

Increased safety “e” EN60079-7 IEC 60079-7

Intrinsic safety “i” EN60079-11 IEC 60079-11

Type of protection “n” EN60079-15 IEC 60079-15

Encapsulation “m” EN60079-18 IEC 60079-18

Intrinsically safe systems EN60079-25 IEC 60079-25

Electrical equipment for Zone 0 EN60079-26 IEC 60079-26

Intrinsically safe field bus systems

EN60079-27 IEC 60079-27

Optical radiation “op” EN60079-28 IEC 60079-28

Standards PP-00044 C

Frequency of

Occurrence

CEC, NEC Editions

Division System

Zone System

Class 1, CEC, NEC

Continuous Class 1, Division 1 Zone 0

Intermittent

Periodically

Class 1, Division 1

Class 2, Division 1

Abnormal

Condition

Class 1, Division 2

Class 2, Division 2 Zone 2

Comparing Divisions to Zones

Zone 1

Standards PP-00044 C

CE is the abbreviation for conformité européenne

Comprised of 18 countries

Union of countries eliminates separate electrical requirements

An enclosure is NOT ELIGIBLE for a CE Mark

Inactive component part

Application of the CE Mark is the responsibility of the final equipment manufacturer

Hoffman offers a Declaration of Conformity

CE Mark

Standards PP-00044 C

Declaration is not

required

Customer assurance

Customer Technical

Construction File

Test reports available

Manufacturer’s Declaration of Conformity

Standards PP-00044 C

Review

There are 3 different agencies in North America; UL, NEMA & CSA

European standards include VDE & IEC

ATEX is a European directive

ATEX has 3 zone levels

Hoffman offers online tools and resources to help determine the right agency rating

Standards PP-00044 C

Available Resources

Hoffman Specifier’s Guide

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Download product drawings

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