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Explosion-protected Motors
Maximum Safety with High Efficiency


In hazardous environments, such as in chemical plants, the oil industry or in gas works, motors have to comply with the strictest safety standards for the protection of life, machines and the en- vironment. With the explosion-protected motors from Siemens you are going further than the basic safety require- ments: our rugged EEx motors operate completely reliably even under the most extreme conditions - and this has been proven worldwide a hundred thousand times over. And what is more, there are no gaps in our EEx motor range, they meet all requirements with maximum safety and high efficiency during operation.
Explosion-protected motors − Technical overview
Motors Type of protection "e" Type of protection "d"
Frame size 63M to 315L 71M to 450
Output range 0.12 kW to 165 kW 0.25 kW to 950 kW
Number of poles 2/4/6 2/4/6/8
Temperature class T1 - T3 T1 - T4
Type of protection II 2 G EExe II acc. to
IEC/EN 60079-0,
IEC/EN 60079-7
II 2 G EEx de II acc. to
IEC/EN 60079-0,
IEC/EN 60079-1
Guideline 94/9/EG, ATEX 95 94/9/EG, ATEX 95
Degree of protection IP 55 IP 55
Voltages All commonly used voltages All commonly used voltages
Frequency 50 Hz and 60 Hz 50 Hz and 60 Hz
Construction type All common construction
types
All common construction
types
Housing FS 63M ...160L
aluminium
FS 100L ... 315L cast iron
Cast iron
Cooling type Surface air cooling Surface air cooling
Temperature class F used as B F used as B
Isolation type DURIGNIT® IR 2000 DURIGNIT® IR 2000,
inverter-compatible up to
500 V, 690 V on request
Explosion-protected motors – Technical overview
Motors Type of protection "n" Dust explosion-proof
Frame size 63M to 450 56M to 450
Output range 0.09 kW to 1000 kW 0.06 kW to 1000 kW
Number of poles 2/4/6/8 2/4/6/8
Temperature class T3 -
Type of protection Ex nA
II 3G EEx nA acc. to
IEC/EN 60079-15
Zone 21: II 2D IP 65 T 125 °C
Zone 22: II 3D IP 55 T 125 °C
acc. to EN 50281/
IEC 61241
Guideline 94/9/EG, ATEX 95 94/9/EG, ATEX 95
Degree of protection IP 55 Zone 21: IP 65
Zone 22: IP 55
Voltages All commonly used
voltages
All commonly used
voltages
Frequency 50 Hz and 60 Hz 50 Hz and 60 Hz
Construction type All common construction types All common construction types
Housing FS 63M ... 160L
aluminum
FS 100L ... 450 cast iron
FS 56M ... 225M
aluminum
FS 100L ... 450 cast iron
(Zone 21 only up to FS 315L)
Cooling type Surface air cooling Surface air cooling
Temperature class F used as B F used as B
Isolation type DURIGNIT® IR 2000,
inverter-compatible
up to 500 V, 690 V on request
DURIGNIT® IR 2000,
inverter-compatible
up to 500 V, 690 V on request
Type spectrum
"Increased safety" degree
of protection – "e" (EEx e II)
Explosion-proof enclosure -
“d” (EEx de IIC)
Non sparking - "n" (EEx nA, Ex nA)
Dust explosion-proof
Quality tested
All explosion-protected motors from Siemens have been tested by the German Federal Institute of Science and Technology (PTB) or by the German Coal and Steel Technology Co. (DMT).





 
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