Areas with potential risk are divided into zones for selecting suitable devices and for proper installation.
The regional classification, in a sense, indicates an excess of Hazard.
- Classification IEC 60079-10-1 for gas-based hazardous areas
- Classification IEC 61241-10-2 for dust-based hazardous areas
Very high degree of security. Security even with few device failures. Devices can be operated continuously in potentially explosive areas.
High degree of security. Safety in normal applications under harsh working conditions. The device must be switched off in case of potential explosion.
Very high degree of security. Security even with few device failures. Safe even in 2 independent explosions or 2 independent errors.
High degree of security. Still safe when device failure in common areas
Normally safe. Safe in normal operation.
G or D coding, G – GAS, D – Powder Environment
Very high safety device that can be used in mines, it guarantees high security, sensitive to grizu explosion. It does not risk ignition in case of faults, it can be operated even in case of gas leakage.
The high safety device that can be used in mines provides high security guarantee sensitive to grizu explosion. The device must be turned off in case of gas leakage or malfunctions.
EPL Ga or Da
The device with a very high safety level can be used in areas at risk of explosion. There is no risk of sparking in case of malfunction or breakdown.
EPL Gb or Db
The device with a high level of safety can be used in areas at risk of explosion. There is no risk of sparking in case of malfunction or breakdown.
EPL Gc or Dc
The device with improved safety level can be used in explosion-prone areas. . There is no risk of sparking in case of malfunction or breakdown.
Devices used in Grizu sensitive mines.
Group 2 (Class I)
Devices used for explosive zones with gases, excluding mines
Group 2 (Class II / III)
IEC 60079-0 2007
Devices for areas with flammable DUST, except mines.
In contrast to the standard, these groups are not included in the ATEX guidelines.