Bharat Bijlee Motors

Conformance to Standards

Salient features of TEFC Standard Motors:

	BBL motors can be continuously overloaded by 10% or can be used up to ambient temperature of 55°C. Temperature rise will be as per Class F limits
	All motors are with degree of protection IP55
	All motors up to 280M frame are designed for 50°C ambient
	2Z Bearings are standard up to 180L frame which are filled with high temperature grease suitable up to 140°C
	On line re greasing provided from frame 225 onwards
	SKF or equivalent make bearings are used and directly procured from the bearing manufacturers
	Terminal boxes are large and can be rotated in steps of 90
	Terminal Box location can be changed from RHS to LHS at site
	Rotors are dynamically balanced with half key
	All foot mounted motors are with integral cast feet
	Outer bearing covers are integral with end shield / flange
	V Rings are used in IP55 motors and no reduction in efficiencies as compared to IP44 motors
	Additional anti tracking protective coating of air drying varnish is applied on the winding overhangs
	Cooling fans are of aerodynamic design resulting in low noise and are bi-directional
	Standard Motors are suitable for mounting with any shaft orientation

Rotomotive Motors

Delphi Eff2/Eff1, IE2/IE3 Motors

Rotomotive asynchronous three phase Delphi series motors are built with dimensional conformance to Indian Standard IS:1231, IS:2223 & International standard IEC 71-1.

The mounting positions as per IS:2253 and IEC 34-7 are B3, B5, B14 and B35.

Rotomotive motors are totally enclosed and fan cooled. Non standard versions in TENV construction are also available on request.

The frame size upto 132 are made from light weight die cast aluminium alloy and from size 160 upto 355 frame and end-covers are made from cast iron.

	Multiple Voltage		IP55 protection (IP56, IP66 on request)
	Multi-Frequency 50/60 Hz		1 or 2 Efficiency Class
	F Class Insulation (H class on request)		IE2 or IE3 Efficiency Class (IEC 60034-30)
	S1 Continuous Duty Service		Tropicalized Winding

Delphi series energy efficient asynchronous squirrel cage induction motors with EFF2/ EFF1 efficiencies are manufactured conforming to lS:1 261 5-2004. 

The enclosures, mounting and voltage supply conditions and tolerances are similarfor both EFF2 & EFF1 motors. 

EFF1 motors can be easily recognized by name plate & RAL5007 blue colour on terminal box cover in 71 -1 32 frame size & RAL9006 silver colour on terminal box cover in 160frame 

For EFF1 motors nearly uniform efficiency from 60% to 1 00% of rated load