HIEE205011R0002 UNS3670A-Z,V2 ABB distributed control system industrial DCS module card

Description

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In Zone 0, no electrical motors can be installed. Most common motor for
Zone 1 is the flameproof design, but it can also be used in Zone 2.
Application Groups:
Depending on the intended use, explosion-proof electrical operating
equipment is divided into two major groups:
Group I Equipment for coal mines (only specially designed motors
for mines can be used)
Group II Electrical equipment for use other than mines
(surface industry)
Group II motors with flameproof enclosures are still further divided
into gas groups:
II A Propane
II B Ethylene
II C Hydrogen
Temperature Classes:
Combustible gas or vapour and explosion-protected electrical equipment
are divided into temperature of the gas or to T6 with regard to the ignition
temperature of the gas or vapour and the maximum surface temperature of
the component.
Flame proof motors, type “d”
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
Note: Other frame sizes are available on request.
The motor enclosure has been designed in such a way that no internal
explosion can be transmitted to the explosive atmosphere surrounding the
machine. The enclosure must withstand, without damage, any pressure
levels caused by an internal explosion, the shape, length and gap of part
assembly joints at shaft opening, cable entries, etc.., shall be designed to
allow for throttling and cooling of hot gases escaping outside. The standard
emphasise the impact of an explosive atmosphere
(for instance, explosion pressure) over constructional requirements of such
apparatus.
Range:0.25 ……. 15kW, 0.33 …..20hp
Frame:JHX71 …..JHX160
Pole:2 …..8
Features:
1. Motors suitable for high ambient temperature 50ºC.
2. Keeps an explosion which takes place inside the enclosure
from propagating through gaps to the ambient.
3. Withstands the explosion pressure created inside
the enclosures.
4. Benefits when dealing with special operating modes such as heavy
stars and special applications.
5. All surface temperatures are selected to comply with the temperature
class.
6. Suitability for use in temperature classes T1 toT4.
7. Can be used both in Zone 1 and Zone 2.