DC Motor (Metal Rolling Mill's Drive)

Description of DC Motor Z315-Z710:
This series DC motors are specially designed for metal rolling mills, but the reversing mill is a exception. The excellent electromagnetism load can reach the best for the optimization of the rotor diameter while reducing the ratio of the inertia and the torque. This design make the DC motors quick response to speed and load changes.

Configuration and Features of DC Motor Z315-Z710:
1. Multiple armature winding types to meet different applications.
2. Excellent commutator and brush holder provide premium commutation
3. The pedestal is made from laminated armor plate, mounted with stator frame to ensure the high stability.
4. The TIG-welding is applied to connect the commutator risers and armature coils for maximum connection strength.
5. Exceptional reliability, the DC motor adopts full compensating windings to supply proper compensation for armature reaction.
6. F class VPI (vacuum pressure impregnate) insulation for stator and rotor to withstand moistures, abrasion, and thermal cycling. This make the DC motor can be used in some severe environment.
7. Armature lamination and pedestal feature by paint coating laminated steel frame to improve following ability of electromagnetism, resulting in better commutation.
8. Adopt end bracket type grease ball bearings. The sliding bearings are available.
9. For the standard model, the outlet box is located in the right side (see from the rotary side), it also can be designed in the left side.

Performance of DC Motor Z315-Z710:
1. Power supply can choose direct current or supplied by the stationary rectifier power.
2. The designed motor rating duty: continuous operation based on S1 duty type
3. The standard rated voltage: 220V, 330V, 440V, 550V, 660V, 750V, 850V for choice. The other rated voltage can be adopted on request.
4. The basic excitation type is separated excitation. Four excitation winding terminals are divided into two groups. The excitation voltage is 220V when the two groups are in serials, otherwise, in parallel connection, the voltage become 110V. Other excitation voltage is available. And the forced excitation is allowed while voltage is less than 500V. When adopts the forced excitation, the excitation current is allowed to exceed the rated excitation current slightly until the excitation current goes to stabilization.

OverloadingParameters of DC Motor Z315-Z710:

(1min, exclude reversing mills, and other special requirement subject to additional negotiation)
Table-4

*When the rotary speed is not less than those specified in Table-5, the data in bracket are adopt.   
Table-5

The second type DC motor (B type) can bear the load as following:
1. Can bear the load 115% of the rated load to run constantly, as long as in the regulated scope of rated voltage and rated rotary speed. Under this load, the temperature may be high, and the other data will be different from those parameters under the rated condition operation.
2. After run under the rated voltage, rated rotary speed and rated load, the DC motor can run in succession for 2 hours by taking the load 125% of the rated load. The temperature will not exceed the regulated data, and the other data will be different from those parameters under the rated condition operation.
3. Under the rotated rotary speed, the overload taken by the DC motor occasionally must 2.5 times than the rated load, and the taking time shouldn't exceed 15s. Please take attention for and contact us about this when ordering.

Ordering Requirement for DC Motor:
1. On the none-driving side, these industrial DC motor can be assembled with tachogenerator, rotary coder, centrifugal switch, temperature sensor(for stator and bearing), heating component, motor pedestal, water cooler, and more. If need these components, please contact us when order and state in the contract.
2. Before order, please check the samples to decide the needed model and specifications. If the models you will order are at variance with the sample, please contact us immediately.
3. When ordering, please specify the following item: model, classification, power, voltage, rotary speed, excitation voltage, duty type, mounting arrangement, cooling method, protection class, cable outlet direction, spare pares(if need)

Harbin Electric Machinery Co,. Ltd. is an industrial electric motor supplier, providing DC motors, Three Phase asynchronous motors, synchronous frequency converters, synchronous motors, etc.