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Motor Division - Increased Safety Squirrel Cage Motors Ex(e)

The BBL range of Increased safety Ex (e) Type " ME" motors are from 0.12 Kw ( Frame 63) to 315 Kw ( Frame 355L). Motors are also offered in multi speed and non standard outputs / voltages / frequencies. Increased safety energy efficient motors are also available.

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These motors can be used in Zone 2 areas as per IS 5572 and VDE 0165.

For further details click the links below:-

1. General Application Data for 3 Phase A.C. Motors
2. Installation and Maintenance for 3 phase Induction Motors
3. Salient Features of Increased Safety Motors :
   1. Terminals and Connection: External connections of client's power cable to the motor terminals in terminal box must be rigidly gripped and secured against loosening and twisting. This is achieved with the help of a specially designed Terminal Plate provided in the Terminal Box.
       
   2. Terminal Box:

      Frame Size	Terminal Box Standard	Option available
      63 - 80	TOP	-
      90 - 225 M	RHS	LHS, TOP
      250M - 355L	TOP	RHS, LHS

      Terminal Boxes in frame sizes 63 to 355L can be rotated through 360° in steps to 90° to suit the cable location.

   3. Air-gap: Radial air-gap of the motors is such that the minimum air gap values specified in IS: 6381 are fully satisfied.

   4. Enclosure: Increased Safety Motors have a degree of protection IP55 in accordance with IS: 4691 as a standard feature. In addition, all flange motors (B5 & B14) have OTS protection. Motors with V1, V5 and V18 mountings are provided with a canopy fitted on the top of the fan cowl.

   5. Winding and Rotor Cage: The stator winding and rotor cage are so designed that the limiting temperature specified in IS: 6381 are not exceeded even at the end of time tE.

   6. Name Plate: Stainless steel name Plate is provided with each motor. Over and above the normal name plate details, other data such as time tE, starting current, temperature-Classes, type of protection, approval certification, etc. are also provided.

   7. Paint : Acid Alkalie Proof epoxy paint is provided on all motors.
       

   8. Certification: ME motors are approved by Chief Controller of Explosives, Nagpur. A declaration to this effect is incorporated on the name plate.
      

4. Interactive Data Sheet and graphs for 3 phase Induction Motors

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