Ex Star Triangle Motor Starters Atex & IECEx

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.