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EFFICIENCY : Efficiency values of motors remain unchanged from 100% to 60% of rated output utilisation. NOISE LEVEL : Motors are designed for low noise levels in accordance with IS : 12055. COOLING AND VENTILATION : Type of cooling is IC 0141 as per IS : 6362. All motors have an external, bi-directional centrifugal fan.

PAINT :

Standard paint (RAL 7030) is provided and is suitable for tropical conditions. However special paint is available on request.  

CONSTRUCTION :

Standard motors with single shaft extension are horizontal foot mounted (IMB3 as per IS : 2253 and IEC 34, Part 7). Frame sizes 160M-315L (except 2 pole motors of frame size 315) in IMB3 construction, can be mounted in IMB6, IMB7, IMB8, IMV5 and IMV6 construction. Other types of construction as shown below, available on request.

TYPES OF CONSTRUCTION

Types of construction Frame Size   IMB3 160M-355L IMB5 160M-315M2) IMB35 160M-315L IMB6*, IMB7*, IMB8 160M-315L IMV5* without canopy 160M-280M 315M, 315L1) IMV5* with canopy 160M-315L1) IMV1 without canopy 160M-280M2) 315M, 315L1) IMV1 with canopy 160M-315L1) IMV3 160M-280M 315M IMV6* 160M-280M 315M, 315L1)

* For installation of foot mounting motors on a wall, a support should be provided for the mounting feet. 1.  Two pole motors for 60Hz cannot be supplied from frame size 315L upwards 2.  The motors are delivered ex-works with two eyebolts corresponding to the type of construction ‘IMB5’whereby one of them can be changed for achieving the type of construction ‘IMV1’. It should be observedthat the through hole of the eyebolt is fitted at right angles to the direction of force.

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