Explosion Proof Motors -EFF2 Improved Efficiency - EEx d / EEx de (ATEX)

Explosion Proof Motors -EFF2 Improved Efficiency - EEx d / EEx de (ATEX)

( Up to 315 KW )

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Applications :

Environments containing flammable gases or vapour continuously, intermittently or periodically in enough amount to generate explosive or flammable mixtures arising out of repairs or maintenance services.

The most common locations of Zone 1 and 2, group IIA and IIB are those where the following gases are found present: oil, naphtha, benzene, ammonia, propane, diethylic ether, acetone, alcohol, industrial methane, natural gas.

The main applications include fans, blowers, crushers, conveyor systems, mills, cranes and other applications located in areas that require explosion proof motors

Standard Features:

Output: 0.55 up to 315kW
Multivoltage – (220-240/380-415//440-460V or 380-415/660-690//440-460V)
Self Ventilated (TEFC)
EFF2 Improved Efficiency
Cast iron frame: 90S up to 355M/L
Mounting: B3T
Degree of Protection: IP55
Squirrel cage rotor/Aluminium die cast
Stainless steel nameplate AISI 316
Class of temperature T4
Class “F” insulation with T 80K
Continuous duty - S1
Ambient temperature: 40°C , 1000 m.a.s.l.
Regreasing nipples from frame 225S/M and above
Thermistors 150ºC - 1 per phase
Metric thread cable entries in terminal box
Hardened set screws
Internal DE and NDE bearing cap to prevent flame propagation
Machined metal to metal surfaces between frame and terminal box
Earth lug inside the terminal box
Suitable for Inverter Duty applications*
Epoxy based paint plan: RAL 5010

*For additional details about Inverter operation, please contact our technical suport. 

Optional Features:

Single voltage (other voltages)
Increased safety terminal box (for EEx de motors)
Degree of Protection: IP56, IP65 or IP66
Other mounting configurations
Thermal protection:
- RTD-PT 100 Space heaters
Space heaters

Classification :

IEC Standard:
Zone 1; Group IIB

CENELEC Standard:
Group IIB; Category 2

Note:The classification in Zone 1 means that the motor is suitable to operate also in Zone 2 once Zone 1 represents an operating condition worse than Zone 2. The same applies to Groups and Categories: EEx d and EEx de motors are suitable to operate also in Group IIA and Category 3.

Certification :

In Europe, WEG explosion proof motors meet ATEX Directive 94/9/EC certified by PTB and product certified by CESI -Centro Elettrotecnico Sperimentale Italiano S.P.A. The CESI certificates of conformity for explosion proof in flameproof enclosure “d” and “de” as per EN50014 / EN50018 are:

EEx-d: Explosion proof motors (class of temperature T4)
EEx-de: Explosion proof motors with increased safety terminal box (class of temperature T4)

Frames Certificate number:

90-100 CESI 01 ATEX 096
112-132 CESI 01 ATEX 097
160-200 CESI 01 ATEX 098
225-250 CESI 01 ATEX 099
280-315 CESI 01 ATEX 100
355 CESI 01 ATEX 101



Rotor Tech Co.,Ltd.
89/22 Moo4 Klongthanon, Saimai, Bangkok 10220
Tel. 0-2191-5387, 08-6355-6818 Fax. 0-2191-5388
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