The use of electrical motors in potentially explosive atmospheres is quite frequent these days. These motors have to be constructed in such a way that there is no risk of an explosion. An Explosion occurs when the following situations occur:
– Presence of potentially explosive atmosphere
– Existence of a source of ignition
– Possibility of transmission of the explosion
ABB motors of flame proof design (type JHX) are TEFC, 3 phase squirrel cage induction motor (as per IS:2148 – 2004) for operation in hazardous location classified as Zone 1 and Zone 2 areas as per IS:5572
Type : JHX Series
Output : 0.25 to 15 KW
Frame : JHX 71 TO JHX 160
Poles : 2….8
Motors suitable for high ambient temperature 50ºC.
Keeps an explosion which takes place inside the enclosure
from propagating through gaps to the ambient.
Withstands the explosion pressure created inside
Benefits when dealing with special operating modes such as heavy
stars and special applications.
All surface temperatures are selected to comply with the temperature
Suitability for use in temperature classes T1 toT4.
Can be used both in Zone 1 and Zone 2
Highest efficiency class
Suitable for 50 C ambient temperature for rugged environment
Cast iron construction for high structural strength
Inner bearing cover on driving side restricts axial play
Reliable, efficient & cost effective for various industrial Applications
Reduced energy bill
High resistance to abnormal operating conditions
High tolerance to thermal stresses from frequent starts
Eco – friendly operation for limiting carbon emissions
High efficiency levels save energy, enable cooler motor running for extended bearingand winding lifetime