Flame Proof Motors For Hazardous Environment JHX

Transcription

1 Flame Proof Motors For Hazardous Environment JHX

2 troduction 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 Classification of Hazardous Environment: According to IS: 2, Hazardous areas are classified in the following ways depending on the degree of probability of the presence of hazardous atmosphere. Zone 2 Abnormal Conditions Presence of explosive atmosphere only by accident, but not during normal duty ( H per year) Temperature Classes: Combustible gas or vapour and explosionprotected electrical equipment are divided into temperature of the gas or to T with regard to the ignition temperature of the gas or vapour and the maximum surface temperature of the component. Temperature Ignition Maximum permitted class temperature temperature of for the gas / electrical vapour C equipment C T1 >40 40 T2 >0 <40 0 T3 >0 <0 0 T4 >13 <0 13 T >0 <13 0 T > <0 1 Flame proof motors, type "d" Zone Zone 0 Zone 1 Zone 2 Criteria presence of gas Zone 1 Occasionally cidental presence of explosive atmosphere during normal duty ( 00 H per year) Continuously of very long period Present in normal operations Zone 0 Continuously Permanent presence of explosive atmosphere ( > 00 H per year) Unlikely, but if present, only for a short time ABB motors of flame proof design (type JHX) are TEFC, 3 phase squirrel cage induction motor (as per IS:2 04) for operation in hazardous location classified as Zone 1 and Zone 2 areas as per IS:2 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: kW, hp Frame:JHX1...JHX0 Pole:2... 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, explosionproof electrical operating equipment is divided into two major groups: Group I Group II Group II II A II B II C Equipment for coal mines (only specially designed motors for mines can be used) Electrical equipment for use other than mines (surface industry) motors with flameproof enclosures are still further divided into gas groups: Propane Ethylene Hydrogen Features: 1. Motors suitable for high ambient temperature 0ºC. 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.. All surface temperatures are selected to comply with the temperature class.. Suitability for use in temperature classes T1 tot4.. Can be used both in Zone 1 and Zone 2.

3 TEFC, S1 Duty 41 ± % V, 0 ± %Hz. Combined Variation of ±% 0 sulation Class F, Ambient Temp. = 0 C 0 Temperature rise class B (0 C) Gas Group IIA & IIB 2 Pole kw HP Speed (rpm) (A) Is/ JHX1C2 JHX1D2 JHX0C2 JHX0D2 JHX0SLC2 JHX0SLD2 JHX0LB2 JHX132SMB2 JHX132SMC2 JHX132SME2 JHX0MLB2 JHX0MLD2 JHX0MLE Pole kw HP Speed (rpm) (A) Is/ JHX1B4 JHX1C4 JHX0D4 JHX0E4 JHX0SLD4 JHX0SLE4 JHX0LB4 JHX1MB4 JHX132SMC4 JHX132SME4 JHX0MLB4 JHX0MLD4 JHX0MLE Pole I kw HP Speed (rpm) (A) Is/ = Nominal or rated current n 2 T n = Nominal or rated torque in Nm T s = Starting torque 2. Max. load GD has been calculated assuming load T max = Maximum torque = Hot withstand time torque is proportional to square of speed. T = Cold withstand time cold Pole JHX0D JHX0D JHX0E JHX0SLD JHX0SLE JHX0LB JHX1MB JHX132SMC JHX132SME JHX0MLC JHX0MLD JHX0MLE JHX0SLA JHX0SLD JHX0LA JHX0LB JHX1MA JHX132SMB JHX0MLB JHX0MLD JHX0MLE kw HP Speed (rpm) (A) Is/ I = Starting current Note : 1. All performance figures are subject to IS tolerances. s Note : Owing to continuous upgradation of our design, performance parameters and dimensions are subject to change without prior notice.

4 Dimension Drawing Foot Mounted Flame Proof Motors Mounting Designation B3, B, B, B, V, V Dimension Drawing Flange Mounted Flame Proof Motors Mounting Designation B, V1, V3 ød ød Earthing screw M for JHX11 Earthing screw M for JHX132, 0 Earthing screw M for JHX11 Earthing screw M for JHX132, 0 Type A AA AB AC B B' BA BB C D Tol. E EB EC EK Type AC AD D Tol. E EB EC EK F G GD JHX 1 JHX 0 JHX 0SL JHX 0L JHX 1M JHX 0ML k k M M M M M M M JHX 1 JHX 0 JHX 0SL JHX 0L JHX 1M JHX 0ML k k M M M M M M M Type JHX 1 JHX 0 JHX 0SL JHX 0L JHX 1M JHX 0ML F G GD H HA HD K L Bearings D N 3ZZC3 2ZZC3 4ZZC3 3ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 Type JHX 1 JHX 0 JHX 0SL JHX 0L JHX 1M JHX 0ML L LA LB M N P S T Bearings D N 3ZZC3 2ZZC3 4ZZC3 3ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3 ZZC3

5 Terminal Box Earthing screw M Type A B C D E F G H JHX M JHX M. 0 JHX M 4 2 * For JHX0, conduit entry is double Certifications and Approvals for ABB Make Flame Proof Motors CMRI/ERTL Certificate No. CCE Certificate No. DGFASLI Certificate No. BIS Certificate No. Frame CIMFR/TC/P/3 Dt..0.0 CIMFR/TC/P/0 Dt CMRI/TC/P/H40 Dt..0 CIMFR/TC/SR/H Dt..000 ERTL(E)/TES/A3/00/030 Dt. 02/04/0 ERTL(E)/TES/A3/00/030 Dt. 02/04/0 ERTL(E)/TES/A3/00/030 Dt. 02/04/0 A/P/HQ/MH/4/ (P2342/1) Dt A/P/HQ/MH/4/ (P2332/1) Dt A/P/HQ/MH/4/0 (P) Dt A/P/HQ/MH/4/4 (P20) Dt A/P/HQ/MH/4/ (P213402/1) Dt..0.0 A/P/HQ/MH/4/ (P213402/2) Dt..0.0 A/P/HQ/MH/4/ (P213402/3) Dt..0.0 //0 Tech Dt. 0.0 //0 Tech Dt. 0.0 /0/0 Tech Dt /0/0 Tech Dt..0.0 /0/0 Tech Dt /0/0 Tech Dt /0/0 Tech Dt CM/L 1324 CM/L 1324 CM/L 1324 CM/L 1324 CM/L 34 CM/L 34 CM/L 34 JHX1 JHX0 JHX0 JHX0 JHX1 JHX132 JHX0

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