electric motors type 3KTCP and 4KTCP are suitable for heavy working conditions in coal mines
- the enclosure of electric motors are designed to be flameproof according to EN 50018.
- the terminal boxes are designed to be increased safety according to EN 50019
- enclosure (cooling rib, terminal box and cable glands) are protected with steel cuirass, even filled up with coal the motor
is cooled enough (the temperature of surface does not exceed 200°C)
- ratio between starting current and nominal current is < 5
- ratio between starting torque and nominal torque is > 2,2
- windings are designed that is able to withstand frequently switch on and off