ELECTRICAL REQUIREMENTS: SX PLANTS

 

 

                                                                                                                                           EnglishEspaņol

HOME

SITE MAP

PRODUCTS

SX PLANTS

EW PLANTS

LEACHING

HYDROMET

COALESCERS

SERVICES

PROJECTS

TECHNOLOGY

DOWNLOADS

CONTACT

 

DEFINITION OF ELECTRICAL CLASSIFICATIONS

 

Hazardous Locations:

Class I Locations:

Hazardous locations because flammable vapours may be present in sufficient quantities to produce ignitable mixtures.

Class I, Division 1:

Locations in which ignitable concentrations of flammable vapours can exist under normal operating conditions.

Class I, Division 2:

Locations in which flammable liquids are used, but are normally confined within closed systems from which they can escape only in the event of accidental breakdown.

Class II Locations:

Hazardous locations caused by combustible dust.

Class III Locations:

Hazardous locations caused by ignitable fibres.

Electrical Enclosures:

NEMA 1:

General Purpose: Enclosures for indoor use to provide protection from incidental contact and protection against falling dirt.

NEMA 2:

Drip Tight: Enclosures for indoor use to provide protection from falling water and dirt.

NEMA 3:

Water Resistant: Enclosures for outdoor use to provide protection from wind blown dust and rain. Undamaged by ice formation on the enclosure.

NEMA 3R:

Rain Tight: Enclosures for outdoor use to provide protection from wind blown  rain. Undamaged by ice formation on the enclosure.

NEMA 4:

Water Tight: Enclosures for outdoor use to provide protection from wind blown dust and rain, splashing water, and hose directed water. Undamaged by ice formation on the enclosure.

NEMA 4X:

Corrosion Resistant: Enclosures for outdoor use to provide protection from corrosion, wind blown dust and rain, splashing water, and hose directed water. Undamaged by ice formation on the enclosure.

NEMA 5:

Dust Tight: Enclosures for indoor use to provide protection from falling dust.

NEMA 6:

Submersible: Enclosures for outdoor use to provide protection against submersion in water.

NEMA 7:

Hazardous Locations: Enclosures for class I hazardous locations (presence of flammable vapours). Circuit interruption occurs in air.

NEMA 8:

Hazardous Locations: Enclosures for class II, oil immersed, groups A, B, C, and D hazardous locations (explosive atmosphere). Circuit interruption occurs in oil.

NEMA 9:

Hazardous Locations: Enclosures for class II, groups E, F, and G hazardous locations (presence of combustible dusts)

NEMA 10:

Mines: Enclosures for hazardous locations (such as coal mines).

NEMA 11:

Acid Mists: Enclosures for use in corrosive atmospheres.

Electrical Requirements for Solvent Extraction Plants:

SX Plants with Combustible Liquids:

Electrical wiring and components in solvent extraction plants with combustible liquids (class II or class IIIA combustible liquids) should be suitable for general purpose locations with NEMA 4 or NEMA 4X enclosures.

SX Plants with Flammable Liquids:

Electrical wiring and components in solvent extraction plants with flammable liquids (1A, 1B, or 1C flammable liquids)  should be suitable for class I, division 2 hazardous locations with NEMA 7 enclosures.

For more details regarding classes of combustible and flammable liquids: Combustible / Flammable Liquids

 

| HOME | SITE MAP | SX PLANTS | EW PLANTS | LEACHING | HYDROMET | COALESCERS | SERVICES | PROJECTS | TECHNOLOGYDOWNLOAD | CONTACT |

This page was last updated on 04/17/14

39A Hamilton Avenue, Cobourg, Ontario, Canada, K9A 1V7  Tel: +1 905 372 5981

© Copyright 2002 -2014  SX Kinetics, Inc. All Rights Reserved                                               email: steven.webster@sxkinetics.com