Euroclima ZHK, Manual

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Instruction Manual ZHK
128/140 V07-21.0
11.2 The ATEX type key
Example of designation:
II 2/3 G/D Ex h IIB T3 Gb
inside /
ouside
CE - European conformity mark
Ex - Explosion protection mark (ATEX di-
rective)
Equipment group II (above ground)
Equipment category (
2
inside /
3
outside)
Type of environment (
G
Gas /
D
Dust)
Explosion protection
Protection type code h
Explosion group (see
Table 23:
Temper-
ature classes and explosion groups for
gases, and
Table 24:
Explosion groups
for dust)
Temperature class (
T3
Gas /
T200
Dust)
(see
chapter 11.4 (Ignition temperature
and temperature classes)
)
EPL: Equipment protection level (see
Ta-
ble 22
: AHU categories)
ATEX-unit execution (
inside
: depending
on conveyed medium /
outside
: depend-
ing on ambient medium)
Figure 224:
Example ATEX type key
Examples of applications:
II 3G Ex h IIB T3 Gc (inside)
The AHUs are designed for processing and transport of explosive atmospheres of Zone 2 but not for
installation in Zone 2.
Equipment in this category ensures in normal operation, the required level of security.
II 2G Ex h IIB T3 Gb (inside)
The AHUs are designed for processing and transport of explosive atmospheres of zone 1 but not for
installation in Zone 1.
The device-specific explosion protection measures of this category must provide the necessary se-
curity, even though lots of disturbances and error states, which usually must be considered, occur.
II 2G Ex h IIB T3 Gb (inside)
II 3G Ex h IIB T3 Gc (outside)
The AHUs are used for processing and transport of explosive atmospheres of zone 1 and for instal-
lation in Zone 2.
The device-specific explosion protection measures of this category (inside) must provide the neces-
sary security at disturbances and error states, which usually must be considered.