ABB MT series, Manual

Page: 6 / 15

6
IECEx IS markings :
Ex ia IIB/IIC T4 Ga
Ex ia III C T80°C Da
Ex ic/ia IIB/IIC T4 Gc/Ga
Ex ic/ia III C T80°C Dc/Da
Ex ic IIB/IIC T4 Gc
Ex ic III C T80°C Dc
-40°C
≤ Ta ≤ 66°C
IECEx ETL 17.0016X/00
3 Explosive atmosphere markings
3.1 IECEx IS ratings
IECEx XP markings :
Ex ia/db IIC T6 Ga/Gb
Ex ia ta IIIC T80°C Da
-40°C
≤
Ta
≤
66°C
IECEx ETL 17.0017X/00
3.2 IECEx Flameproof ratings
Conditions of Certification
(a) Special Conditions for safe use

When EPL Ga or Da is required (for example in Zone 0 or
Zone 20 hazardous areas), parts of the equipment contain-
ing light metals (Aluminum, Magnesium, Titanium and Zir-
conium) shall be protected from impact so that impact or
friction sparks cannot occur, taking into account rare mal-
function.

Where EPL Da is required, the equipment housing shall not
be subjected to uncontrolled dust layers.

For Group IIC models equipped with Fieldbus communica-
tion, for connection to a FISCO trunk, an additional current
limiting assembly, ABB part number 010-1000-2, shall be
fitted to the input terminals. Refer to ABB Instruction docu-
ment.

The cable entry device shall comply with the requirements of
IEC 60079-0 and maintain IP 54 or better.
(b). Conditions of Manufacture

Equipment with "ic / ia" intrinsic safety shall be fitted with
the MT Series Hermetic Seal Adapter.
Conditions of Certification
(a). Special Conditions for safe use

When EPL Ga or Da is required (for example in Zone 0 or
Zone 20 hazardous areas), parts of the equipment contain-
ing light metals (Aluminum, Titanium and Zirconium) shall
be protected from impact so that impact or friction sparks
cannot occur, taking into account rare malfunction.

Where EPL Da is required, the equipment housing shall not
be subjected to uncontrolled dust layers.

The cable entry device shall be appropriately lECEx certified
and maintain the appropriate level of ingress protection in
order to maintain the required ingress protection rating
according to the installation conditions.

Flamepath joints are not intended to be repaired.
(b). Conditions of Manufacture

The probe coupler shall be pressure tested at a pressure of
at least 328 psi for at least 10 seconds. There shall be no
leakage or permanent deformation.