Introduction
PUTAI manufactures medium voltage motors for industrial equipment and process applications that require reliable power transmission, stable operation and integration with demanding drive systems. The product range includes wound-rotor slip-ring motors, high-voltage squirrel-cage induction motors, water-cooled motors and medium voltage variable-frequency motors.
PUTAI supplies motors for new equipment projects, OEM production and replacement applications. The range covers different power ratings, voltage levels, frame sizes and operating requirements for industries such as mining, cement, oil and gas, metallurgy and power generation.
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![YR 3 Phase Slip Ring Motor]()
YR 3 Phase Slip Ring MotorPUTAI YR 3 Phase Slip Ring Motors cover 160–7200 kW, frame sizes H355–H1120 and rated voltages from 3 kV to 11 kV. They serve OEMs, industrial motor distributors, project integrators and plant... -
![JR Low Voltage Slip Ring AC Motor]()
JR Low Voltage Slip Ring AC MotorPUTAI JR Low Voltage Slip Ring AC Motors are three-phase wound rotor induction motors designed for industrial drives requiring high starting torque and controlled starting. With listed ratings of... -
![YJTFKK Motor Medium Voltage]()
YJTFKK Motor Medium VoltagePUTAI YJTFKK medium voltage variable frequency motors cover 160–8,000 kW for equipment OEMs, industrial project contractors, distributors, and maintenance teams. Typical applications include large... -
![Y Series High Voltage Motor]()
Y Series High Voltage MotorPUTAI Y Series High Voltage Motors are three-phase squirrel-cage induction motors rated 200–15,000 kW, with voltage options from 3 kV to 11 kV. They serve equipment OEMs, industrial distributors... -
![YJTF Medium Voltage Electric Motors]()
YJTF Medium Voltage Electric MotorsPUTAI YJTF Medium Voltage Electric Motors are three-phase squirrel-cage induction motors rated 160–8,000 kW, designed for variable-frequency industrial drives. They serve OEMs, distributors,... -
![YJT Hv Electric Motor]()
YJT Hv Electric MotorPUTAI YJT HV Electric Motors are medium- and high-voltage three-phase squirrel-cage asynchronous motors rated 185–9,000 kW, designed for inverter-controlled industrial drives. They serve equipment... -
![JR 6kv Slip Ring Motor]()
JR 6kv Slip Ring MotorPUTAI JR 6kV Slip Ring Motors are three-phase wound-rotor induction motors designed for industrial drives where starting characteristics must be considered alongside driven-load requirements. With... -
![YRKS High Voltage Ac Motor]()
YRKS High Voltage Ac MotorPUTAI YRKS High Voltage AC Motors are water-cooled, three-phase wound-rotor induction motors rated 200–9,000 kW. They serve equipment OEMs, industrial distributors and plant operators in... -
![YRKK 11kv Motor]()
YRKK 11kv MotorPUTAI YRKK 11kV Motors are three-phase wound-rotor induction motors for heavy-duty industrial drives. They serve equipment OEMs, industrial distributors, project integrators and plant operators in... -
![YJTKK 10kv Motor]()
YJTKK 10kv MotorPUTAI YJTKK Medium Voltage Variable Frequency Motors cover 160–8,000 kW and voltage ratings from 3 kV to 11 kV. They serve equipment OEMs, industrial distributors, project integrators and... -
![Y2 4160v Motor]()
Y2 4160v MotorPUTAI Y2 series three-phase squirrel-cage induction motors cover 4160V applications from 160 to 1600 kW, with frame sizes H355–H560. They serve equipment OEMs, system integrators, motor... -
![YKS 5kv Motor]()
YKS 5kv MotorPUTAI YKS series motors are water-cooled, three-phase squirrel-cage induction motors rated 160–25,000 kW. They serve equipment OEMs, industrial distributors and end users in large pumping, fan,...
Product Range and Technical Specifications
PUTAI's medium voltage motor range includes the following product types. Each series has different rotor structures, cooling arrangements and operating characteristics to suit specific equipment requirements.
Wound-Rotor Slip-Ring Motors
Wound-rotor motors are used in applications where starting torque, starting current and starting performance are important considerations. Their rotor circuit allows external resistance to be incorporated into the starting system.
YR Series Wound-Rotor Motor
The YR series is designed for industrial equipment requiring wound-rotor starting characteristics and high-power operation.
• Power: 160–7,200 kW
• Voltage: 3–11 kV
• Frame size: H355–H1120
• Cooling: IC01
• Protection: IP23
• Frequency: 50/60 Hz
JR Low Voltage Slip-Ring AC Motor
The JR low-voltage series is included in PUTAI's wider slip-ring motor range. It is intended for industrial applications requiring a low-voltage wound-rotor motor.
• Power: 45–710 kW
• Voltage: 380–1,140 V
JR 6kV Slip-Ring Motor
The JR 6kV series is a medium voltage wound-rotor motor for industrial equipment requiring controlled starting and operation under demanding load conditions.
• Power: 200–1,050 kW
• Frame range: No. 13–No. 15
• Voltage: 6 kV series designation
• Cooling: IC01
• Protection: IP23
• Frequency: 50/60 Hz
YRKK 11kV Wound-Rotor Motor
The YRKK is a wound-rotor motor designed for high-power industrial drives. Its cooling configurations include IC611, IC616 and IC666.
• Power: 160–9,000 kW
• Voltage: 3–11 kV configurations listed in the product range
• Cooling: IC611 / IC616 / IC666
• Protection: IP54 / IP55
High-Voltage Squirrel-Cage Induction Motors
Squirrel-cage induction motors are widely used in industrial drives with relatively stable operating requirements. Their rotor structure is suitable for applications where a simple and robust motor design is required.
Y Series High-Voltage Motor
The Y series covers high-power industrial applications across a range of voltage and frame configurations.
• Power: 200–15,000 kW
• Voltage: 3–11 kV
• Frame size: H355–H1000
• Frequency: 50/60 Hz
• Poles: 2–16
Y2 4160V Motor
The Y2 series is a three-phase squirrel-cage induction motor configured for 4160V industrial power systems.
• Voltage: 4160 V
• Power: 160–1,600 kW
• Frame size: H355–H560
• Frequency: 50/60 Hz
• Poles: 2 / 4 / 6 / 8
• Speed: 3000 / 1500 / 1000 / 750 rpm
• Cooling: IC411
• Protection: IP54
• Insulation class: F / H
The listed power, frequency, pole count and insulation classes apply to the 4160V configuration. Specific parameter combinations are determined by the available motor configuration.
YKK High-Voltage Motor
The YKK series is a squirrel-cage induction motor with an air-to-air heat exchanger cooling arrangement.
• Power: 160–8,000 kW
• Voltage: 3–11 kV
• Frame size: H355–H1000
• Cooling: IC611
• Protection: IP54 / IP55
• Frequency: 50/60 Hz
Water-Cooled High-Voltage Motors
Water-cooled motors are used in industrial installations where the cooling arrangement is an important part of the equipment design and operating environment.
YRKS Water-Cooled Motor
The YRKS series is a water-cooled squirrel-cage induction motor for large industrial drives.
• Power: 200–9,000 kW
• Cooling: IC81W / IC86W
YKS 5kV Motor
The YKS series is a water-cooled squirrel-cage induction motor. The product page title identifies the series as YKS 5kV Motor, while its listed voltage configurations include the following ratings:
• Power: 160–25,000 kW
• Listed voltage configurations: 3 kV / 3.3 kV / 4.16 kV / 6 kV / 6.6 kV / 10 kV / 11 kV
• Frequency: 50/60 Hz
• Poles: 2 / 4 / 6 / 8 / 10 / 12 / 16
Medium Voltage Variable-Frequency Motors
Medium voltage variable-frequency motors are designed for industrial drives that require speed adjustment to match changing process conditions. The appropriate motor configuration depends on the drive system, operating frequency, load characteristics and installation requirements.
YJT Medium Voltage Variable-Frequency Motor
The YJT series is a squirrel-cage induction motor for variable-frequency industrial drives.
• Power: 185–9,000 kW
• Frame size: H355–H1000
• Voltage: 3–11 kV
• Frequency range: 5–70 Hz
• Cooling: IC01 / IC06
YJTF Medium Voltage Variable-Frequency Motor
The YJTF series provides medium voltage variable-frequency drive configurations for large industrial equipment.
• Power: 160–8,000 kW
• Frame size: H355–H1000
• Cooling: IC01 / IC611
• Protection: IP23 / IP54
YJTFKK Medium Voltage Variable-Frequency Motor
The YJTFKK series is a medium voltage squirrel-cage induction motor for variable-frequency applications.
• Power: 160–8,000 kW
• Voltage: 3–11 kV
YJTKK 10kV Medium Voltage Variable-Frequency Motor
The YJTKK series is designed for medium voltage variable-frequency drive systems. Its available voltage configurations cover 3–11 kV.
• Power: 160–8,000 kW
• Voltage: 3 / 3.3 / 4.16 / 6 / 6.6 / 10 / 11 kV
• Frequency ranges: 5–70 Hz and 3–50 Hz
• Poles: 2 / 4 / 6 / 8 / 10 / 12 / 16
CE approved
Product Range Comparison
The table below provides an overview of the main PUTAI medium voltage motor series and their listed technical ranges.
|
Product Series |
Motor Type |
Power Range |
Voltage / Main Configuration |
|
YR |
Wound-rotor slip-ring |
160–7,200 kW |
3–11 kV |
|
JR Low Voltage |
Low-voltage slip-ring |
45–710 kW |
380–1,140 V |
|
JR 6kV |
Wound-rotor slip-ring |
200–1,050 kW |
6 kV series |
|
YRKK 11kV |
Wound-rotor slip-ring |
160–9,000 kW |
3–11 kV configurations listed |
|
Y Series |
Squirrel-cage induction |
200–15,000 kW |
3–11 kV |
|
Y2 4160V |
Squirrel-cage induction |
160–1,600 kW |
4160 V |
|
YKK |
Squirrel-cage induction |
160–8,000 kW |
3–11 kV |
|
YRKS |
Water-cooled squirrel-cage |
200–9,000 kW |
Refer to series configuration |
|
YKS 5kV |
Water-cooled squirrel-cage |
160–25,000 kW |
Listed options: 3–11 kV |
|
YJT |
Variable-frequency squirrel-cage |
185–9,000 kW |
3–11 kV |
|
YJTF |
Variable-frequency squirrel-cage |
160–8,000 kW |
Refer to series configuration |
|
YJTFKK |
Variable-frequency squirrel-cage |
160–8,000 kW |
3–11 kV |
|
YJTKK 10kV |
Variable-frequency squirrel-cage |
160–8,000 kW |
3–11 kV |
The table summarizes the published product ranges. Individual motor configurations should be matched to the required voltage, power, speed, cooling arrangement and operating conditions.
Industrial Applications
PUTAI medium voltage motors are used in industrial equipment that requires high power output, continuous operation or specific starting and speed-control characteristics. Motor requirements vary according to the driven equipment and its operating conditions.
Mining
Mining equipment often operates under heavy loads, frequent starts or demanding site conditions.
Typical applications include:
Ball mills and grinding mills: motor selection involves starting torque, starting method, mill load characteristics and required operating speed.
Mine ventilation fans: Power rating, speed, airflow demand and operating conditions are important matching factors.
Crushers and conveyors: Motor requirements depend on the driven load, starting frequency and operating duty.
Mine pumps: rated power, flow requirements, operating head and speed-control needs affect motor configuration.
Cement
Cement production lines use large motors to drive equipment under continuous or cyclic operating conditions.
Typical applications include:
Kiln and mill drives
Raw material and cement grinding mills
Exhaust and process fans
Large material-handling equipment
For mill drives, starting torque and starting arrangements are important. Fan applications require attention to airflow demand, operating speed and system resistance. Continuous-duty equipment also requires a motor configuration suited to its thermal and operating conditions.
Oil and Gas
Oil and gas facilities use medium voltage motors in equipment that may operate continuously or under changing process loads.
Typical applications include:
Large process pumps
Compressors
Pipeline and transfer equipment
Auxiliary industrial drives
Pump applications require matching motor power and speed to the required flow and operating head. Compressor drives require consideration of load characteristics, starting method and continuous operating duty.
Metallurgy
Metallurgical production lines use motors for heavy-duty equipment and processes involving frequent load changes.
Typical applications include:
Rolling mill auxiliary equipment
Fans and blowers
Pumps
Material-handling systems
For rolling mill-related applications, starting, braking, reversing and load variation may affect the required motor design. The motor and control system should be matched to the actual production process.
Power Generation
Medium voltage motors are used in auxiliary systems and other large industrial drives in power generation facilities.
Typical applications include:
Boiler and induced-draft fans
Cooling water pumps
Circulating pumps
Auxiliary process equipment
The required motor configuration depends on rated power, operating speed, cooling conditions, duty cycle and the electrical system.
Manufacturing & Quality Assurance
Manufacturing Capability
PUTAI's motor manufacturing operations cover key production stages, including silicon-steel preparation, copper winding, insulation processing, vacuum pressure impregnation (VPI), drying, motor assembly and dispatch testing.
The company has a 200,000 m² manufacturing facility, RMB 80 million in fixed assets and more than 120 employees, including 18 technical engineers. With over 25 years of motor industry experience, PUTAI supplies industrial motors for OEM projects and replacement requirements.
Quality Assurance
Motor quality control involves inspection and testing at relevant manufacturing stages. Key processes include winding and insulation checks, assembly inspection and electrical testing before dispatch.
For medium voltage motor projects, technical documentation and test requirements can be coordinated according to the product configuration and project specifications. Relevant inspection and test records can support customer review and equipment acceptance.
OEM Supply and Replacement Matching
PUTAI supplies medium voltage motors for equipment manufacturers, industrial distributors, project contractors and maintenance teams.
For OEM applications, motor configuration can be coordinated with the driven equipment and the customer's electrical and mechanical interface requirements. Important matching information includes:
Rated power and voltage
Frequency and number of poles
Rated speed and load characteristics
Starting method and control system
Mounting arrangement and shaft dimensions
Cooling method and protection requirements
Operating duty and installation environment
For replacement projects, the existing motor nameplate, drawings and installation dimensions provide a starting point for technical comparison. The replacement motor should also be checked against the driven equipment, electrical supply, starting system and operating conditions.
PUTAI can support OEM supply and replacement projects with product data, technical documentation and configuration coordination.
Frequently Asked Questions
We are one of the most professional mv motor manufacturers and suppliers in China, also support customized service. With abundant experience, we warmly welcome you to buy advanced mv motor made in China here from our factory. For price consultation, contact us.
