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Delivering Safety.
Home / Products & Services / Purge & Pressurisation Systems for Electrical Enclosures / Dust Protection Type X,Y and Z

Dust Protection Type X,Y and Z

IECEx, ATEX & FM certified protection systems for Zone 21/22 & Class II Div 1 & 2 dust applications

Features

  • Global approvals
  • Pressurisation of enclosures up to 5.5m³
  • Stainless steel panel construction

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  • Description
  • Specifications
  • Downloads

Description

Expo’s MiniPurge dust systems provide a pressurisation only protection solution for electrical enclosures and other equipment installed in Zone 21/22 or Class II Div 1/2 hazardous environments.

International standards require that the enclosure is first cleaned to remove any accumulations of dust prior to operation. Once the enclosure is free of dust and sealed, the MiniPurge DP can be started. After successful pressurisation, the equipment can be energised either automatically or manually, depending on the hazardous area requirements.

Hazardous area classification
Classification of equipment protected
Purge type
Control of power to enclosure
Class II Div 1; Zone 21
Standard uncertified
X DP
Automatic (via MIU)
Class II Div 1; Zone 21
Class II Div 2; Zone 22
Y DP
Manual
Class II Div 2; Zone 22
Standard uncertified
Z DP
Manual

 
The system comprises:

  • Control Unit (CU) – The CU contains the pneumatic logic to monitor and control air pressure and provide the system outputs.
  • Relief Valve (RLV) –provides over-pressure protection to the enclosure

Specifications

Air Inlet
Instrument quality air, 4-8 barg
Temperature range
-20°C to +55°C
Air flow rate
225 Nl/min.
Signal Outputs
Alarm/Pressurised
Options: IS output, pneumatic output
Certifications
IECEx, ATEX, INMETRO, FM , EAC, KOSHA*

* Not all certifications apply to all system variants. Check the specific Operating & Maintenance Manual for details.