The Equipment and components that shall be certified according to the Technical Regulation TR CU 012/2011 “On safety of the equipment for operation in explosive atmospheres” have to be marked appropriately. This includes the explosion protection marking as well as the identification number, which indicates the explosion protection of the machine and its components.

 

The marking shall be conducted according to the GOST standards. Electrical equipment has to be marked according to GOST 31610.0-2014 “Explosive atmospheres. Part 0. Equipment. General requirements” and GOST 60079. GOST standards are harmonised with IEC 60079-0:2001.

 

Ex Label

EAC EX Kennzeichen

In addition to the EAC conformity Mark, the Ex label has to be attached on the equipment.

The EAC EX label consists of the combination of to conventionalized letters “E” and “X”, while “Ex” stands for explosion protection. The height of letter “x” has to be equal to 5/9 of letter´s “E” height. The letters shall be attached on a white or contrasting background.

 

The height of the Ex symbol must be at least 10 mm with height-to-width aspect ratio 11/8, so that it is clearly legible with an unaided eye.

The Explosion Safety Mark shall be affixed on every machine, ex-components or technical documentations.

 

Markings on the type label

The marking on explosion protected equipment shall include the following components:

 

Explosion-proof marking

Name of the manufacturer

Name of the notified body

Number of the notified body

EAC Conformity Mark

Number of the certificate of conformity

Equipment category and group

Level of protection

Type of ignition protection

Equipment group

Sub-division of equipment group

temperature class

IP protection

Equipment category

The first number on the Ex Label indicates the equipment category.

 

0 – Equipment with "very high" level of protection for use in explosive gas atmospheres, in which ignition danger is not likely to expect in normal operation.

 

1 – Equipment with "high" level of protection for use in explosive gas atmospheres, that is unlikely to become an ignition source in normal operation or during expected malfunctions

 

2 – Equipment with "enhanced" level of protection for usage in explosive gas atmospheres, that is unlikely to become an ignition source and provides additional protection in order to prevent danger of ignition in case of expected malfunctions.

 

Equipment intended for use in mines susceptible to firedamp belong to group I and shall be certified according to GOST 12.2.020-76.

 

PO – Equipment with very high level of protection for usage in explosive gas atmospheres

PB – Explosion protected electrical equipment

PП – Equipment with enhanced level of protection