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Electric Motors
Frame 280S/M Output 90 kW Number of Poles 4 Frequency 60 Hz Rated speed 1785 rpm Slip 0.83 % Rated voltage 380 V Rated current 167 A L. R. Amperes 1319 A LRC 7.9 No load current 50.4 A Rated torque 49.1 kgfm Locked rotor torque 240 % Breakdown torque 290 % Locked rotor time 48s (cold) 27s (hot) Moment of inertia (J) 2.10 kgm² Design N Insulation Class F Service factor 1.00 Temperature rise 80 K Duty Cycle S1 Starting Method Direct On Line Ambient temperature -20°C to +40°C Altitude 1000 m.a.s.l. Degree of Protection IP55 Enclosure IC411 - TEFC Mounting B3T Rotation¹ Both (CW and CCW) Noise Level² 76.0 dB(A) Approx. weight³ 706 kg
(1) Looking the motor from the shaft end.; (2) Measured at 1m and with tolerance of +3dB(A).; (3) Approximate weight, subject to be changed after manufacturing process.; (4) At 100% of full load.
Efficiency
50% 75% 100% 94.8 95.4 95.4 Power factor
50% 75% 100% 0.75 0.83 0.86
Features
Frame Material Cast Iron Impregnation Method Constant Resin Flow Regreasing System At Drive end and Non-drive end Main terminal box hole 2xM63x1,5 Terminal Block BMC - 6 pins Drain Rubber, automatic Shaft Material SAE 1040/45 Carbon Steel Painting Grounding Lugs Double Fan Cover material Rolled Steel Tropicalized Painting Without Fan material Plastic Bearing cap Yes- Bearing Cap Winding thermal protection Thermistor - 2 wires 1 per phase 155°C Drip Cover Without -
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