Wound Rotor Slip Ring Motor

The JR series Wound Rotor Motor is a protective winding type rotor three-phase asynchronous motor with cooling method IC01 and a continuous working system (S1). This series of motors can provide a large starting torque at a small starting current and can adjust the speed within a certain range. 

The JR winding slip ring motor casing is a cast iron casing or a steel plate welded casing with high structural strength and good mechanical properties. The motor shaft extension end and the non-bearing end have an inlet and outlet air outlet, and the motor slip ring is located at the non-bearing end. The series of motors has a simple structure, convenient installation, convenient maintenance, large starting torque and safe and reliable operation. JR winding slip ring motors can drive a variety of different machines, such as fans, compressors, pumps, crushers, ball mills, winches, hoists, transport machinery and other equipment, as well as mines, machinery, power plants and are Used as the prime mover in various industrial and mining enterprises.

The JR series motor is a Wound Rotor Motor. This series of motors meet the technical standard conditions. It can drive a variety of different machines, such as fans, compressors, pumps, crushers, ball mills, cutting machines, transport machinery and other equipment. It is used as a prime mover in the machinery industry, power plants and various industrial and mining enterprises. The rating of the JR winding slip ring motor is based on the continuous working system (S1). The frequency is 50HZ, the rated voltage is 220V/380V, 380V, 415V, 3000V, 6000V, which can be designed to 3300V/10000V according to the needs of users.

The protection of this series of Wound Rotor Motor is IP23; the cooling method is IC01; the structure and installation method of the motor is generally IMB3, and it can also be designed as vertical installation according to customer requirements.

The ratio of the maximum torque to the rated torque of the JR winding slip ring motor at the rated voltage is not less than 1.8.

The JR winding slip ring motor must be connected to the starting varistor in the rotor circuit at the start. It is not permissible to short-circuit the rotor windings directly.

Wound Rotor Motor Parameters

Motor power range: 80KW-850KW

Rated voltage: 380V/415V/660V/690V/3000V/33000V/6000V/10000V

Number of poles: 6/8/10/12

Rated frequency: 50Hz/60Hz

Protection level: IP23

Cooling method: IC01

Working system: S1

Insulation class: B

Wiring method: △

Ambient temperature: ≥ -15 ° C and ≤ 40 ° C

The Wound Rotor Motor is suitable for altitudes up to 1000 m and the ambient air temperature is 0-40 degrees. The protective motor should be installed in a room with clean air, no dust, steam, acid, alkali and other corrosive gases. It is not allowed to be used in an environment containing explosive gas or dust.

Feature of Wound Rotor Motors

The JR winding slip ring motor casing is a cast iron casing or a steel plate welded casing with high structural strength and good mechanical properties. The motor shaft extension end and the non-bearing end have an inlet and outlet air outlet, and the motor slip ring is located at the non-bearing end. The series of motors has a simple structure, convenient installation, convenient maintenance, large starting torque and safe and reliable operation.

Here are some key characteristics and features of a Wound Rotor Motor:

Variable Speed Capability: One of the primary advantages of a Slip Ring-Rotor Motor is its ability to achieve variable speeds. By adjusting the resistance in the rotor windings through the external slip rings, the motor's speed and torque characteristics can be controlled, making it suitable for applications that require precise speed regulation.

Starting Torque Control: The wound rotor motor offers better starting torque control compared to standard induction motors. Initially, the rotor windings are connected to external resistors, which reduces the starting current and prevents excessive mechanical stress on the motor and connected machinery during startup.

High Starting Torque: When the motor is first energized, the external resistance in the rotor circuit generates a high starting torque. As the motor gains speed, the resistance is gradually reduced to optimize its performance.

Durability and Low Maintenance: The slip rings and brushes in the external circuit are the primary wear components in a wound rotor motor. However, these components are relatively easy to replace, resulting in lower maintenance costs compared to other motor types.

Applications: Wound rotor motors are commonly used in applications requiring controlled starting and speed regulation, such as large pumps, crushers, ball mills, conveyor belts, and heavy industrial machinery.

Energy Efficiency: While wound rotor motors offer control advantages, they are generally less energy-efficient than squirrel-cage induction motors or permanent magnet motors. As a result, they might not be the first choice for applications where high energy efficiency is a critical factor.

Packing and Shipping

1. The outer packaging of the Wound-Rotor Motor is all standard export-oriented wooden plywood packaging.

2. The Wound-Rotor Motor packaging is protected from moisture, water plastic soft packaging

3. For products with special transportation requirements (such as temperature, fragility, variability, and ease to get wet), the packaging protection measures will be strengthened, and the target mark will be printed on the package.

4. There are obvious signs and symbols on the packing box that must be paid attention to during transportation and storage (such as position, moisture, rain, shockproof, lifting position, etc.).

Equipment Capacity

The company has a large-scale laboratory, intelligent CNC winding machine, CNC rising machine, automatic wrapping machine, VPI high pressure vacuum immersion system, large-scale dipping paint drying furnace, 60 tons test platform, large vertical car, milling machine, grinding machine, Each type of dynamic balancing machine, double-feedback test and detection system with 6MW (12MW) motor and other motor production professional equipment more than 500 sets, sound mechanical equipment processing capacity, to lay a good foundation for customers to improve good quality motor products.

Main Process Flow of the Slip Ring-Rotor Motor

Motor stator: casing processing → punching press → iron core seating → coil making → weaving → dipping paint drying

Electronic rotor: blank shaft processing → iron core press installation → iron core cast aluminum → rotor string shaft → weave → dipping paint drying → dynamic balance

Motor assembly: stator rotor assembly → machine test → motor appearance coloring →packaging storage

Why Choose ZCL

1. Professional motor manufacturing service provider;

2. Sound product quality management and certification system;

3. Have a professional sales and technical service team;

4. The motor has perfect process and strong mechanical processing capability;

5. High standard product technical service system;

6. good faith and mutual benefit, good credit guarantee.