CONTACTORS ELECTRO-PNEUMATIC
for Traction Vehicles

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Contactors CONTACTORS ELECTRO-MAGNETIC CONTACTORS ELECTRO-PNEUMATIC

CONTACTORS ELECTRO-PNEUMATIC

Electro pneumatic Contactor is a double pole heavy duty contactor designed to be used on traction vehicles. The contactors are equipped with arc blow-out circuit and Auxiliary Switch. Additionally the exhaust air blast is utilized for extinguishing the arc.

Technical Features

  • Used for Higher voltage upto 3000V and 600A AC/DC application. Having double pole normally open contacts.
  • Compact and Space saving.
  • Low Maintenance and Reliable operations under extreme condition.
  • Contact movement designed for self-cleaning action.
  • Contacts are easily inspected and replaced.
  • Independent of polarity.
  • Arc Extinguisher helps to break down the arc voltage and to cool the arc effectively.
  • Operating Coil designed for voltage tolerance of -30% to +25%.
  • All non metallic components are of fire retardant self –extinguishing materials.
  • Option of upto 8 (NO or NC) auxiliary contacts, customization possible.
  • Sturdy structure and a long mechanical life (over 10 million operations).
  • Supplementary air blast ensures short switching times throughout the entire range.

Applications

Used in traction vehicle as a Contractor Filter On/Off, Contactor Filter Adaption, Auxiliary Equipments, Traction Converters, etc.

Technical Specifications

Main Circuit

Number of poles, type of contact Two, normally open mechanically coupled
Rated voltage Both poles in series 3000V
Max. service voltage 3600V
Frequency 50Hz
Rated current 600A
One hour current 630A
Short time current 5 minute 800A
Peak breaking current 2400A
Peak breaking current at
1.2 U (L/R = 15ms)		 2400A
Closing time Approx. 100ms
Interrupting / Break time Approx. 75ms
Weight 20.5 kg (Approx.)
Mounting Contactor to be fitted only with arc chute on top
Mechanical operation switching rate 2 operations per sec.
Mechanical life 10 million operations
Operating Temperature -40°C to +70°C
Standards IEC 77, IEC158-1, IS11731(Part 1 & 2)

Control Circuit

Mechanism Construction Electro-pneumatic with return springs
Operating pressure 0.4 to 1.0 MPa
Rated control voltage U 110V DC N
Service voltage 0.7 to 1.25 UN
Power consumption at nominal control volatge 8~20W (approx.)
Auxiliary Contacts
Nature of contacts 8 (4NO & 4NC) can be customized
Rated voltage 220V
Rated current 20A
Max. closing current 50A