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Simplifying Complexity.
Delivering Safety.
Home / Products & Services / Motor Purge Systems / Pre-ventilation systems / Motor Pre-Start Ventilation Systems (3PV, 5PV, 7PV)

Motor Pre-Start Ventilation Systems (3PV, 5PV, 7PV)

IECEx & ATEX certified pre-start ventilation systems for large Ex e & Ex n electrical machines

Features

  • Certification to +60°C
  • Pre-start ventilation flow capacity up to 14,000 Nl/min
  • Remote start options
  • Stainless steel enclosure construction

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  • Description
  • Specifications
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Description

Expo’s PV range of pre-start ventilation systems provide essential protection to large non-sparking electric motors. The PV range can deliver pre-start ventilation flow rates of up to 14,000 Nl/min and is ideal for very large sized Ex e and Ex n electrical machines.

The system comprises the Control Unit (CU) and the Relief Valve (RLV). The Control Unit contains the pneumatic logic to monitor and control air flow, pressure and pre-start ventilation timing, and provides the system outputs. The RLV measures air flow at the outlet and provides over-pressure protection for the machine.

 

Specifications

Air Inlet
Instrument quality air, 4-10 barg
Pre-start ventilation flow rate
User selectable:
3PV: 500, 1,000, 1,500 Nl/min
5PV: 2, 3, 4, 5, 6,000 NI/min.
7PV: 7, 8, 10, 12, 14,000 Nl/min
Temperature range
-20°C to +60°C
Pre-start ventilation timer
1-99 minutes
Timer power source
IS (Intrinsically Safe) Battery or Electro-Pneumatic Power Supply (EPPS)
Signal Inputs/Outputs
Inputs: Remote start (if option selected) Outputs: Ventilation in progress; Ventilation complete. Connection: Ex e junction box Optional Ex i, Ex d junction boxes.
Certifications
IECEx, ATEX

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