Dust Protected Enclosures Ex tb Ex tc Class II Zone 21 Zone 22 ATEX Hazardous Areas

Dust Protected Enclosures

Ex tb Ex tc Enclosures

Ex tb Ex tc Class II Zone 21 Zone 22 ATEX Hazardous Areas

IECEx – ATEX Certified, Expo Dust & Protected by Enclosure, Ex tb (Type PE2E) or Ex tc (Type PE3E)

Dust protected enclosures hold IECEx & ATEX Certificates to IEC/EN 60079-0 & IEC/EN 60079-31 and EN 61241-1, ATEX hazardous area Zone 21, Ex tb or Zone 22, Ex tc for the populated Dust Protected Enclosure type PE2E/ PE3E.

The Ex tb tc enclosures for explosive atmospheres are designed to prevent the entry of flammable dust into the enclosure – custom designed and engineered for specific application or project.

The construction and power dissipation of the internal components of the dust protected enclosures are critical to ensuring effective purging, compliance with temperature rating and safe operations.

All internal components and details must be reviewed with the consultation of Thorne & Derrick to determine compliance with the IECEx / ATEX “Schedule of Limitations” required for the certificate to apply.

Dust Protected Enclosures

Features & Benefits

IECEx – ATEX Certified. Dust & Protected by Enclosure, Ex tb (Type PE2E) or Ex tc (Type PE3E)
IECEx ATEX Zone 21 & 22 Hazardous Area Certification to IEC/EN 60079-0 & IEC/EN 60079-31 or EN 61241-1, IP6X, Ex tb/Ex tc
No need for a Certified/Notified Body as the Certificate has been issued to Expo
Accept orders for your apparatus in hazardous locations and increase your market share
Ease of Certification for the OEM and the User
Reduced Certification cost
Reduced time to market – short lead time enclosures
After review, equipment not complying with the SoL may still be certified with a variation to the Expo Certificate
Passive operation, no external electric control system or air supply required

Dust Protected Enclosures

Model Number PE2E or PE3E

Specification

Sizes: Enclosures purpose built and designed for the application
Maximum Size: 2.1m H x 1.8m W x 1.0m D Approx: 82″ H x 70″ W x 39″ D Larger sizes are available
Material: 1.5mm to 3mm dependent on the size of the PE 316L Stainless Steel – Finish: NROB Mild (Carbon) Steel – Finish: Powder Coated RAL7035 (Light Grey)
Doors: Front, Back, Side, Top, Bottom or Double Doors
Door Fasteners: Tool Operated ¹/4 turn Stainless Steel
Hinges: Stainless Steel
Seals: Silicone seals fully compliant with IEC/EN 60079-0
Windows: Laminated Clamped Glass Maximum size up to 1m²(Approx: 10.76ft²)
Control Devices & Actuators: Certified Lamps, Push Buttons etc.
Sub-panel (Chassis): Rear, Sides, Top, Bottom or Door
19″ Rack: Fixed or Swing Frame
Mount Bosses
Lifting Eyes
Gland Plates
Mobile PE2E/PE3E: Anti-Static Wheels
Wall Lugs
Free Standing
Plinths

Exp Enclosures - Pressurized Enclosures Certifications

Ex tb Ex tc Enclosures – Dust Protected Enclosures Certifications

Certification of PE2E or pe3e Dust Protected Enclosure

Should you require any technical support to enable the design, specification or customisation of dust protection enclosures for explosive dust (Zone 21 & Zone 22) explosive atmospheres please contact our Hazardous Area Sales Team.

IECEx: Certificate of Conformity: IECEx ITS 08.0044X ATEX: Certificate of Conformity: ITS1OATEX16944X	Ex tb IIIC T135°C Db Hazardous Area Classification
IECEx: Certificate of Conformity No: IECEx ITS11.0042X ATEX: Certificate of Conformity No: ITS11ATEX17381X	Ex tc IIIC T135°C Dc Hazardous Area Classification
Ambient Temperature	-20°C, -4°F to 55°C, 131°F
IEC/EN 60529 & IEC/EN 60079-0	IP66 Ingress Protection
Compliance to General Conditions IEC/EN 60079-0	Includes thermal conditioning of Non metallic items, seals, etc, resistance to light testing, impact testing 4 -7 Joules
Schedule of Limitations	Request SoL PE2, Hazardous Area Zone 21 (22)
Special Conditions of Safe Use	Before closing the door dust must be removed from the inside of the enclosure and then power can be applied
Instruments & Electrical	Most apparatus installed within the PE2 are normally acceptable
Ex Apparatus	Permitted subject to internal temp
Effective Purging	Boxed apparatus will require ventilation holes
Power & Signals Inputs	Must be capable of being manually disconnected
Temperature Rating	T135, T200, T300 dependent on internal and external apparatus
Batteries	Check with T&D. Small memory type batteries may be able to be installed
Verification	Can be completed at the client’s or T&D premises. T&D will supply the verification document and certificate label(s)