Tmk900-30/2150 Synchronous Motor for Ball Grinding Mill in Mining

• Customization: Available
• Application: Universal, Industrial
• Operating Speed: Constant Speed
• Model NO.: TMK900-30/2150
• Operation Mode: Electric Motor
• Magnetic Structure: Salient Pole
• Function: Driving
• Structure: Rotating Armature Type (Pole Fixed)
• Number of Poles: 2-40p
• Ventilation: Open and Closed
• Certification: CCC, ISO9001, CE
• Brand: Changli
• Rated Power: 400kw-15000kw
• Frequency: 50Hz/60Hz
• Voltage: 11kv, 10kv, 6.6kv, 6kv, 3000V, 3300V
• Protection: IP00,IP20, IP23, IP44, IP54
• Cooling Method: IC01, IC37, IC81W
• Mounting: Im7311,Im7312, Im7321
• Rotation Direction: Cw/Ccw
• Connection: Y
• Bearing: Plain Bearing/Rolling Bearing
• Insulation Class: F
• Temperature Rise: B
• Altitude Above Sea Level: 1000m
• Duty Type: S1
• Color: Customized
• Temperature: up to 50
• Transport Package: Standard Seaworthy Packing
• Trademark: CHANGLI
• Origin: China
• HS Code: 8501530090
• Production Capacity: 500000

Product Description

I. Overview

TDMK series of large AC three-phase synchronous motors for mining mills are the core driving equipment for mining, cement and other industries. This series of motors (including TDMK series brush synchronous motors and TMW series brushless synchronous motors) are widely used in mining, cement and other industries because of the characteristics of large starting torque. It is mainly used to drive mechanical equipment with lower speed and higher power, mainly driving grate ball mill, rod mill, coal mill, etc.

Our company combines  years of experience in manufacturing medium and large high-voltage AC motors, and adopts advanced technology at home and abroad, and through a mature and reliable design and production system, adopts new technique, new materials and new technology to continuously improve the product design and manufacture, and selects materials carefully and manufactures well, so that this series of products become more reliable, more compact, less vibration, lower noise, more suitable for outdoor use, less weight and more reliable. It is a mature product with more reliable operation, more compact structure, less vibration, lower noise, more outdoor application, lighter weight and higher efficiency.

This series of synchronous motor conforms to GB755 "Rotating Motor Quotas and Performance" and JB/T1473 "Technical Conditions for Large AC Three-phase Synchronous Motor for Transmission Mines". The power level and installation size conform to our standard and IEC standard of International Electrotechnical Commission, and conform to German standard, and can be used for the matching of export equipment and the replacement of imported products.

TDMK series synchronous motor excitation system adopts silicon controlled excitation device with slip ring and brush structure.
The excitation system of TMW series synchronous motor is composed of AC exciter rotating coaxially with the main motor and rotating rectifier disc, without slip ring and brush structure, there is no problem of brush replacement and slip ring wear, and it can adapt to harsh environment.

Voltage level: 3kV~11kV and other voltage levels of the series motor specifications.
The motors can be started directly at full voltage or softly with reduced voltage.
Power range: 400-15000kW
Number of poles: 60,48,40,36,32,30,24,20
Synchronous speed: 100,125,150,167,187.5,200,250,300r/min
Frame size: 4250,3250,2900,2600,2150,1730
Frequency: 50/60Hz and frequency conversion
Cooling mode: IC01, IC37, IC81W
Protection degree: IP00,IP20,IP21,IP23,IP44,IP54,IP55
Structure and installation type: IM7311
Standard: IEC,GB
The motor is divided into two types: shaft punching motor and non-punching motor, shaft punching motor needs to be used with pneumatic clutch.
Shaft non-perforated motors have high starting performance.
At rated voltage: starting torque x 1.7 times (0.6 for shaft perforation)
Draw-in torque x 1.0 times (0.6 for shaft perforation)
Lost step torque x 2.0 times
Starting current x 7.0 times
The performance indexes, mounting and external dimensions of the outdoor (W), humid tropic zone (TH) and outdoor humid tropic zone (THW) motors derived from the series are the same as those of the basic series.

II. Advantageous features

1.Advanced optimization design means
Combined with our long-term successful technology of producing medium-sized high-voltage motors, we adopt advanced design means to optimize the design of TDMK series three-phase synchronous motors.
2. Reliable motor manufacturing technology
2.1 The motor base is made of Q235B high-quality steel plate welded. The design of motor parts are analyzed by finite element modeling and verified by test, with good rigidity, light weight and stable structure.
Low vibration, high precision machining of rotating parts to ensure concentricity of stator and rotor.
Low noise, seat stress relief technology ensures the stability and dynamic performance of the seat.
2.2 The stator core is made of 0.5mm thick low-loss silicon steel laminated with radial ventilation channels separating the core sections.
2.3 The stator winding is insulated with mica tape. After the winding is installed, vacuum pressure immersion paint (VPI) is applied to the whole stator, and the winding insulation grade is F, which has a good temperature rise margin. The coil slot fixing method and connection method of LDW advanced technology are introduced to ensure the long-term operation reliability of the motor.
2.4 The coil temperature measuring element, bearing temperature measuring element, vibration measuring probe, cooler water leakage detection device, etc. collect operating information at any time and deliver it to the control system exclusively to ensure that the motor is effectively monitored by the system.
2.5 The magnetic pole core is made of 1.5mm thick steel plate laminated. The magnetic pole wire gauge, damping strip and damping ring are made of high quality copper, and the magnetic pole coil is insulated with class F. The magnet pole coil connection and damping ring connection are hard brazed.
2.6 The motor uses domestic and foreign high-quality bearings, long bearing life, simple maintenance bearing stability is good, simple and convenient daily maintenance.
2.7 Higher mechanical performance, high temperature rise design margin, the same motor can meet the requirements of a variety of working conditions. Installed with anti-condensation shutdown space heater to facilitate daily maintenance.
2.8 AC exciter and rotating rectifier adopt independent structure, easy to maintain and repair. The rotating rectifier disc is small and compact, with electrical connections, structural fixings and electrical heat dissipation parts integrated, and each flap is insulated from each other, which makes operation reliable, low failure rate and easy to install and maintain. Brushless excitation system is adopted, and the excitation device has automatic excitation throwing technology, automatic excision technology of demagnetization resistor, and lost-step re-step technology to ensure normal and reliable operation. The supporting excitation cabinet adopts fully digital circuit, with high reliability, strong anti-interference, low failure rate of main circuit control components and air-cooling system components, ensuring long-term operation. In the case of no shutdown and guaranteed load operation, the plug-in can be directly replaced and no more debugging can be done after the replacement. Custody, disassembly, maintenance is convenient.

3. Raw Materials
Frame: Cast iron, steel
Stator: Copper
Rotor: Copper/aluminum 
Shaft:  45# Steel
Bearing: SKF, or equivalent 

4. In-process Inspection/ Quality Control
All the measuring apparatus and instruments are calibrated each year.
Quality control for each item

Part	Inspection item
Coil	1. Physical and chemical tests for raw materials
	2. Coil winding process inspection
	3. Winding dimension inspection
Iron Core	1. Physical and chemical test report for silicon steel sheet material
	2. Lamination burrs and paint film inspection
	3. Dimensional inspection of laminated steel sheet
Frame	1.Cold welding parts conformity certificate
	2. Finish machining inspection
Rotor	1. Rotor core lamination inspection
	2. Conducting bar welding
	3. Check the material, appearance, conductivity and size of the conducting bar end ring
	4. Check the fastening of the conducting bars in the slots
	5. Dimensional check, including iron core outer diameter
	6. Dynamic balance correction
Shaft	1. Raw material , annealing check
	2 Finish machining check
Stator	1. Iron core compactness check
	2. Check iron core length and section length
	3 Inserting winding check
	4. Iron consumption check
Assembly	1. Plain bearing size and surface quality check
	2. Check the size of the air gap, the coincidence of the axial centerline of the stator and rotor core, the gap of inner fan and windshield
	3 Cleaning check inside the motor
	4 Shaft center height and installation size check
Test	1. Routine test
	2. Type test

5. Test Items
Each motor must be tested before leaving the factory. After the motor is qualified, the motor can be shipped out. Each motor will have a test report.
 

Routine test items Winding three-phase DC resistance Winding insulation resistance to ground Winding withstand voltage test No-load current No-load power No-load loss Three-phase no-load current imbalance Locked rotor current Locked rotor torque Maximum torque Rotation direction Vibration: horizontal, vertical, axial  Noise

Type test items Full load input power Full load current Stator winding loss Rotor winding loss Iron loss Mechanical loss Other losses Full-load slip ratio Stator winding temperature rise Bearing temperature Thermal winding insulation resistance Overload test Full-load power factor Efficiency

6. Packaging and Painting 
Standard seaworthy package for export
Plywood package or wooden fumigation package
Suitable for long distance transportation by sea

Standard painting thickness: 120microns (40 micron priming paint and 80micron finish paint)
With professional painters, we can mix and paint any color according to your choice.



7. Warranty Period
Standard warranty: 12 months after commissioning, or 18 months after delivery, whichever comes first.
If you would like to extend the warranty period, please contact us for details.