General YVP series VVVF adjustable speed motors for metallurgy and crane are specially used for driving various cranes and other similarity equipment. The YZP series use frequency conversion adjustable speed power and can be used with various variable frequency units at home and abroad.. The YZP series have wide adjustable speed range, high overload capacity, high reliable, high efficiency. The YZP series are very suitable the machine which frequency start and stop or interrupted duty with starting, braking, inverse frequently. 3. Base mode rated voltage: 380V. base frequency: 50Hz???1-50Hz constant torque adjustable speed, 50-100Hz constant power adjustable speed protection Class:IP54 insulation class: F or H cooling mode: fan cooling???IC416??? base operating duty : S3-40 install mode: B3???112~450?????B5???112~250?????V1???112~315?????B35???132~315??? winding connection: Y to 160 and below; ?? to 180 and above According to the agreement, the following are optional: over-temperature protection, dampproof heating belt, brake, rotary encoder, over-speed switch.