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Three-Phase Motors
Three-Phase Motors
J J Engineering Works, an ISO 9001: 2000 company, offers a range of Three-Phase Motors. J J Engineering Works is one of the leaders in manufacturing electric motors marketed under Navjyot brand, and has the expertise of producing world-class motors since more than two and half decades. The company subsequently started manufacturing and marketing tailor-made special purpose electric motors with the acquisition of modern assembly and testing facilities and it is thus well equipped to cater to the requirements of customers from various industrial segments. Right from raw materials through the production and testing lines, down to dispatch, every section makes arduous efforts to deliver quality product.
- Rating – 0.12 to 22 kW
- Frame size – 63 to 180L
- Speed – 3000, 1500, 1000 and 750 RPM
- Construction – (B3) foot, (B5)flange, (B14) face and combinations
- Voltage/frequency – 415 V ±10%/50 ±6%
- Frame – cast iron for motors in 63 to 180L frames with rugged construction
- End shields – cast iron
- Terminal box – position on top box motors in 63 to 180L frame
- Terminal box can be rotated in the step of 90 through 360° for desired cable entries direction
- Cable gland suitable to 3/4" to 1" with BS conduit threadings
- Shaft – material EN8 with threaded centre for locking of pulley/gear
- Bearings – deep groove radial ball bearings (single row) capable of taking axial loads in both the directions at high speeds
- Protection – IP-55/44 by means of `V' ring seals and oil seals to prevent penetration of solid contaminants/moisture into the motor
- Momentary overload – 1.6 times of rated torque for 15 seconds
- Insulation class – `F' class with temperature rise limited to `B' class; rotors – squirrel cage, aluminium pressure die cast dynamically balanced with half key to maintain low vibration levels
- Winding – Class `F' wire and impregnated with class `F' varnish
- Electric supply and variations – 415 V ±10%, 50 Hz ±5% and combined variations ±10% unless otherwise specified
- Duty – continues (S1) starting up 5 seconds for 2 starts from cold conditions
- Service factor – service factor 1.1 at rated voltage and frequency with class `F' temperature rise
- Ambient temperature – 40°C
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