Ex Star Triangle Motor Starters Atex & IECEx

MOTREX SERIES

Used to reduce the peak start current in the induction Ex motors. The Atex & IECEx star-triangle motor starter has been designed for optimum performance at start-up.
This start-up mode is used to reduce the peak start current in the induction ex motors, which can damage the network and / or other receivers during the acceleration period of the machine.
The peak current, in direct connection, can reach 5 to 6 times the nominal motor current. With this method, the starting current will be reduced in 1/3 of the rated current and therefore there will be no danger of any component being damaged.
The Ex components of the Atex & IECEx motor starter are protected inside an Atex & IECEx enclosure, made of 304L stainless steel. 

Ex Star Triangle Motor Starters Atex & IECEx · Atex DelvalleAtex Delvalle
Ex Star Triangle Motor Starters Atex & IECEx · Atex DelvalleAtex Delvalle

This product has the following certificates

  • Logo Atex · Atex Delvalle
  • Logo CE · Atex Delvalle
  • Logo IECEx · Atex Delvalle
  • Logo IK10 · Atex Delvalle
  • Logo IP66 · Atex Delvalle
  • Logo IP6x · Atex Delvalle

Description

The Atex & IECEx star-triangle motor starter has been designed for optimum performance at start-up.
This start-up mode is used to reduce the peak start current in the induction ex motors, which can damage the network and / or other receivers during the acceleration period of the machine.
The peak current, in direct connection, can reach 5 to 6 times the nominal motor current. With this method, the starting current will be reduced in 1/3 of the rated current and therefore there will be no danger of any component being damaged.
The Ex components of the Atex & IECEx motor starter are protected inside an Atex & IECEx enclosure, made of 304L stainless steel. 
The enclosure has a specific design, being watertight, anticorrosive and with an IP66 protection.  Achieving “Ex e” and “Ex d” protection, allowing its use in areas with a high risk of explosion.

The maximum rated voltage of the Atex & IECEx motor starter is 690V and the rated current is from 12A to 38A.
The power for which the Atex magnetic starter is designed is between 4 and 18.5 kW.
It is able to work between two temperature ranges to give it a greater versatility:

  • -20°C≤ Ta ≤60°C    
  • -20°C≤ Ta ≤40°C

Regarding to the Atex & IECEx enclosure that surrounds it:

  • The connection between the body and the cover is designed to ensure minimum IP66 protection.
  • It has “Ex e” protection suitable for areas with explosive gas and dust atmospheres 1, 2, 21 and 22.
  • Includes three Ex cable glands with “Ex e” protection made of nickel-plated brass or stainless steel from M25.
  • It has “Ex e” and “Ex d” protection, suitable for zones 1, 2, 21 and 22, with explosive atmospheres of gas and dust.

Discover the advantages

Reduction of Ex motor starting current, avoiding high voltage drop in the mains supplies system.
It avoids interferences in equipment installed in the distribution system (network).
Reduced cost in the protection system (cables, contactors), avoiding excessive oversizing.
It allows adapting to the limitations imposed by the rules of distribution of electric power, in terms of voltage drop in the network.
Suitable for loads requiring small starting torque.
Possibility of manufacturing of the enclosure by AISI 316L stainless steel for highly corrosive & marine environments.
Great versatility and possibilities.
Unique monobloc manufacture enclosure system that achieves perfect sealing and impact resistance. With body and door pre-assembled, and minimum welding.

Regulations

It is certified for use in potentially explosive atmospheres of zones 1, 2, 21 and 22 and has an “Ex e” and “Ex d”.

  • Atex marking:
    • II2G Ex d e IIC T6 Gb
    • II2D Ex tb IIIC T85°C Db
    • Certificate number: LOM14Atex2082
  • IECEx marking:
    • Ex d e IIC T6 Gb
    • Ex tb IIIC T85°C Db
    • Certificate number:  EX/LOM/IECEx

Atex directive and normative:

  • Directiva Atex 2014/34/EU
  • EN 60079-0:2012
  • EN 60079-1:2007
  • EN 60079-7:2015
  • EN 60079-31:2010

IECEx normative:

  • IEC 60079-0:2011
  • IEC 60079-1:2006
  • IEC 60079-7:2015
  • IEC 60079-31:2013

Enclosure normative:

  • Norme IP66 IEC 60529
  • Norme IK10 IEC 62262

Low voltage directive and normative:

  • Directiva de 2014/35/UE
  • EN 61439-12011
  • EN 61439-22011

Custom Made Solutions
We offer multiple solutions

Ex Star Triangle Motor Starters Atex & IECEx · Atex Delvalle
Do you need ATEX solutions?
2021 product catalogues
  • The rated current of the Ex contactors is selectable between: 12, 25 and 38A.
  • The control voltage has several options: 24, 36, 48, 110, 220-230 and 380-400V.
  • The capacity range of the thermal relay is selectable between: 7-10, 9-13, 12-18, 16-24, 23-32 and 30-38A.
  • The Ex enclosure can be made of AISI 316L stainless steel.
  • Atex cable gland of any size and thread in nickel plated brass & stainless steel.
  • Possibility of different ex configurations, with indicator lights, emergency mushroom, etc.
Ex Star Triangle Motor Starters Atex & IECEx · Atex Delvalle

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