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Certification and approved laboratories

The motors offered by Cemp herein comply with Directive 94/9/ EC ATEX, which states that two different certificates of conformity are to be issued:

  • EC Type examination certificate
  • Product quality assurance notification.


Flameproof motors and motors with added protection must be approved by a notified body appointed by the European Commission according to the methods defined by the same ATEX directive. The motors are classified based on the hazardous atmosphere of the place of installation. The type of motor protection must be chosen on the basis of the area of installation. The dangerousness of the zone is determined by the atmosphere involved. The user is responsible for determining the type of protection, enclosure group, and maximum surface temperature of the motor to be installed. The user must also correctly install, connect to the mains, use and service the motor. Certificates of conformity to CENELEC standards are valid in all member countries in the European Union and member countries of CENELEC. The electrotechnical committees of the following countries are members of the CENELEC: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Norway, Holland, Portugal, United Kingdom, Spain, Sweden and Switzerland. The nominal characteristics of motors relate to a maximum ambient temperature of 40°C. The certifications are valid for a maximum ambient temperature of 60°C (IIC) and 80°C (IIB). At ambient temperatures exceeding 40°C, the nominal characteristics may deviate from the standard. Certificates of EC Type Conformity relate to motors with:

  • IIB or IIC enclosure groups
  • Ex d or Ex de protection modes
  • category 2G and temperature classes T3, T4, T5, T6
  • category 2GD and surface temperatures T150°C, T135°C, T100°C, T85°C.
  • These certificates cover:

  • motors with voltage up to 1000V and frequencies of 50 and 60Hz
  • single-phase motors
  • three-phase double winding and/or double polarity motors
  • motors installed at altitudes higher than 1000m above sea level
  • service from S1 to S9
  • motors operated by electronic frequency converter and with forced
  • accessories such as: anti-condensation heaters and temperature detectors
  • ambient temperature: min. - 50 °C, max. + 80 °C (T3) + 60 °C (T4).

Notified bodies

The list of notified bodies can be found on the European Union website at the following address: