750-841 WAGO, 750-841 Datasheet - Page 263

• Manufacturer Part Number: 750-841
• Description: CONTR.ETHERNET TCP/IP 10/100MBIT
• Manufacturer: WAGO

Specifications of 750-841

• Rohs Compliant: YES
• No. Of Digital Inputs: 10
• No. Of Digital Outputs: 10

7.3.2 Explosion protection group
WAGO-I/O-SYSTEM 750
Busklemmen
Explosive areas resulting from gases, fumes or mist:
Explosive areas subject to air-borne dust:
In addition, the electrical components for explosive areas are subdivided into
two groups:
Zone 0 areas are subject to an explosive atmosphere
Zone 1 areas can expect the occasional occurrence of an explosive
Zone 2 areas can expect the rare or short-term occurrence of an explosive
Zone 20 areas are subject to an explosive atmosphere
Zone 21 areas can expect the occasional occurrence of an explosive
Zone 22 areas can expect the rare or short-term occurrence of an explosive
Group I:
Group II:
Minimal ignition energy of representative types of gases
Explosion group
Gases
Ignition energy (µJ)
atmosphere (> 0 h ≤ 10 h /year).
atmosphere (> 0 h ≤ 10 h /year).
(> 1000 h /year) continuously or for extended periods.
atmosphere (> 10 h ≤ 1000 h /year).
(> 1000 h /year) continuously or for extended periods.
atmosphere (> 10 h ≤ 1000 h /year).
endangered mine structures.
explosive environments. This group is further subdivided by
pertinent combustible gases in the environment.
Subdivision IIA, IIB and IIC takes into account that
different materials/substances/gases have various ignition
energy characteristic values. For this reason the three sub-
groups are assigned representative types of gases:
IIA – Propane
IIB – Ethylene
IIC – Hydrogen
Group I includes electrical components for use in fire-damp
Group II includes electrical components for use in all other
I
Methane
280
Classification meeting CENELEC and IEC
IIA
Propane
250
Use in Hazardous Environments
IIB
Ethylene
82
IIC
Hydrogen
16
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