Application Of Use (Zone Xx) In Accordance With Equipment Category; Gas Explosion Group (Iia, Iib Or Iic) In Accordance With Equipment Group (Iia, Iib Or Iic); Temperature Class Of The Equipment - Atexor SLAM TrafoEx 400 Instructions For Safe Use

2.1.2 Application of use (Zone XX) in accordance with equipment
category
Operator has the best knowledge of area classification at his site. To help the operators' selection of
equipment the certification is describing the equipment category. For explosion hazardous areas there
are three equipment categories. SLAM
equipment.
Category 1 product is suitable for use in Zones 0, 1 and 2 / (20, 21 and 22)
Category 2 product is suitable for use in Zones 1 and 2 / (21 and 22)
Category 3 product is suitable for use in Zones 2 / (22)
2.1.3 Gas explosion group IIA, IIB or IIC and dust explosion group IIIA,
IIIB or IIIC in accordance with Equipment group IIA, IIB or IIC for gases
and equipment group IIIA, IIIB or IIIC for dusts
This information is vital because the substances require different amount of energy to be ignited. Safety
requirements for equipment are not the same for different substances (e.g. static electricity
requirements).Therefore making the selection easier the gases are divided to three different groups (IIA,
IIB and IIC). Further information about the substances can be found from EN 60079-20 (Data for
flammable gases and vapours, relating to the use of electrical apparatus).
SLAM ® -units mentioned in this instruction are Equipment group IIC for gases, group IIIC for dusts

2.1.4 Temperature class of the equipment

Please observe the Ignition Temperature (IT) of the substance creating the explosion hazard at your
site. Select the equipment based on IT of the substance. The temperature of the equipment must be
lower than IT. The highest temperature of the equipment is specified by using Temperature Classes T1
to T6.
Example:
Petroleum IT is approximately 250 Celsius  Maximum allowed temperature class of the equipment is
T3 (< 200° C)
SLAM ® -units mentioned in this instruction are Temperature Class T3/T4 (GASES)
®
SLAM -units mentioned in this instruction maximum surface temperature of 70⁰C (DUSTS)
9/16
®
-units mentioned in this instruction fall into Category 2