WEG Explosion-proof motor was especially designed to operate in environments with the presence of explosive atmospheres. It has robust construction, a flame retention system with gaps between the parts carefully designed, accurate machining on the terminal box and screws with high mechanical strength. It meets the requirements of explosive atmospheres like Division I/Zone 1. Motors are certified for VFD service.
Electric Motors
Frame
256TC
Output
20 HP (15 kW)
Number of Poles
4
Frequency
60 Hz
Rated speed
1770 rpm
Slip
1.67 %
Rated voltage
230/460 V
Rated current
50.0/25.0 A
L. R. Amperes
375/188 A
LRC
7.5x(Code J)
No load current
23.6/11.8 A
Rated torque
59.3 ft.lb
Locked rotor torque
300 %
Breakdown torque
300 %
Locked rotor time
36s (cold) 20s (hot)
Moment of inertia (J)
2.89 sq.ft.lb
Design
B
Insulation Class
F
Service factor
1.15
Temperature rise
80 K
Duty Cycle
Cont.(S1)
Starting Method
Direct On Line
Ambient temperature
-20°C to +40°C
Altitude
1000 m.a.s.l.
Degree of Protection
IP56
Enclosure
IC411 – TEFC
Mounting
F-1
Rotation¹
Both (CW and CCW)
Noise level²
69.0 dB(A)
Approx. weight³
375 lb
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