parker motor, German parker model, parker price

parker motors refer to electric motors with a rated voltage above 1000V. Commonly used voltages are 6000V and 10000V; due to differences in foreign power grids, there are also voltage levels of 3300V and 6600V. High-voltage motors emerged because motor power is proportional to the product of voltage and current. Therefore, when the power of low-voltage motors increases to a certain extent (e.g., 300KW/380V), the current is limited by the allowable carrying capacity of the conductors, making it difficult to increase further or resulting in excessive costs. High voltage is required to achieve high-power output. Advantages of high-voltage motors include high power and strong shock resistance; disadvantages include high inertia, making starting and braking difficult.

parker motor classification

Based on the power supply, motors can be divided into DC motors and AC motors. AC motors are further divided into single-phase and three-phase motors. Based on structure and operating principle, motors can be classified as DC motors, asynchronous motors, and synchronous motors. Synchronous motors include permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors include induction motors and AC commutator motors. Induction motors are subdivided into three-phase asynchronous motors, single-phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors include single-phase series-wound motors, AC/DC universal motors, and repulsion motors. DC motors are classified by structure and operating principle into brushless DC motors and brushed DC motors. Brushed DC motors include permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motors are divided into series-wound, shunt-wound, separately excited, and compound-wound DC motors. Permanent magnet DC motors include rare-earth, ferrite, and AlNiCo permanent magnet DC motors. Based on starting and running methods, motors can be classified as capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor-start-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors. Motors can also be categorized as drive motors and control motors. Drive motors include those for power tools (drilling, polishing, grinding, slotting, cutting, reaming, etc.), home appliances (washing machines, electric fans, refrigerators, air conditioners, recorders, VCRs, DVD players, vacuum cleaners, cameras, hair dryers, electric shavers, etc.), and other general small mechanical equipment (small machine tools, small machinery, medical devices, electronic instruments, etc.). Control motors include stepper motors and servo motors. Based on rotor structure, motors are classified as squirrel-cage induction motors (formerly known as squirrel-cage asynchronous motors) and wound-rotor induction motors (formerly known as wound asynchronous motors). Based on operating speed, motors are classified as high-speed, low-speed, constant-speed, and variable-speed motors. Low-speed motors include gear reduction motors, electromagnetic reduction motors, torque motors, and claw-pole synchronous motors. Variable-speed motors include stepped constant-speed, stepless constant-speed, stepped variable-speed, and stepless variable-speed motors, as well as electromagnetic variable-speed, DC variable-speed, PWM variable-frequency variable-speed, and switched reluctance variable-speed motors. The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field. The rotor speed of a synchronous motor remains at synchronous speed regardless of load. (1) Horizontal vibration motor: (1) Loosen the fastening screws of the protective cover and remove the covers from both ends; (2) For vibration motors with excitation force less than MV50-2, MV50-4, MV50-6, MV30-8 (excluding these four specifications), the outer eccentric block is adjustable, with a scale indicating the maximum excitation force percentage on the surface, while the inner eccentric block is fixed; both are secured to the motor shaft with fastening bolts. Reference lines are engraved on both end faces of the shaft. Loosen the fastening bolts of the outer eccentric blocks on both sides, rotate them in the same direction to align the shaft reference line with the excitation force scale on the outer eccentric block, adjust to the required excitation force, tighten the bolts, and reinstall the protective cover; (3) Excitation force greater than or equal to MV50-2;

parker motor classification

Motor classification: I. Classification by motor structural dimensions: ① Large motors refer to those with a frame center height greater than 630mm. ② Medium-sized motors refer to those with a frame center height between 355 and 630mm. ③ Small motors refer to those with a frame center height of 80-315mm. Two. Classification by motor speed: ① Constant-speed motors include standard squirrel-cage, special squirrel-cage (deep-bar, double-cage, high-starting-torque), and wound-rotor types. ② Variable-speed motors are those equipped with commutators. ③ Multi-speed motors include pole-changing motors, single-winding multi-speed motors, special squirrel-cage motors, and slip motors. Three. Classification by mechanical characteristics: ① Standard squirrel-cage asynchronous motors are suitable for low-capacity applications with small slip variation and constant speed, such as blowers, centrifugal pumps, and lathes, where low starting torque and constant load are required. ② Deep-bar squirrel-cage motors are suitable for medium-capacity applications requiring slightly higher starting torque than standard squirrel-cage asynchronous motors. ③ Double-cage asynchronous motors are suitable for medium and large squirrel-cage rotor motors, offering higher starting torque but slightly lower maximum torque. They are suitable for constant-speed loads requiring high starting torque, such as conveyor belts, compressors, crushers, mixers, and reciprocating pumps. ④ Special double-cage asynchronous motors are made with high-impedance conductor materials. Characteristics include high starting torque, low maximum torque, and large slip, enabling speed regulation. Suitable for punch presses, cutting machines, and other equipment. ⑤ Wound-rotor asynchronous motors are suitable for applications requiring high starting torque and low starting current, such as conveyor belts, compressors, and rolling mills. Four. Classification by motor protection type: ① Open-type motors have no specific protection for rotating and live parts other than necessary support structures. ② Protected-type motors have necessary mechanical protection for rotating and live parts without significantly obstructing ventilation. Based on ventilation port protection structures, there are three types: mesh-covered, drip-proof, and splash-proof. Drip-proof motors prevent vertically falling solids or liquids from entering, while splash-proof motors prevent liquids or solids from entering from any direction within 1000 degrees of the vertical. ③ Enclosed-type motor housings prevent free air exchange between the inside and outside but do not require complete sealing. ④ Waterproof-type motor housings prevent water under certain pressure from entering. ⑤ Watertight-type motor housings prevent water entry when submerged. ⑥ Submersible motors can operate underwater for extended periods under specified pressure. ⑦ Explosion-proof motor housings prevent internal gas explosions from propagating externally and igniting combustible gases. Five. Classification by operating environment: standard, humid-heat, dry-heat, marine, chemical, high-altitude, and outdoor types.

parker motor structure

Motors mainly consist of a stator, rotor, and bearings. The stator comprises a core, three-phase windings, frame, and end shields. The stator core is typically made by punching and stacking silicon steel sheets 0.35~0.5 mm thick with an insulating layer on the surface. Slots are uniformly distributed on the inner circumference of the core to accommodate the stator windings. The three-phase windings consist of three identical windings arranged symmetrically with a spatial separation of 120° electrical degrees. The coils of these windings are inserted into the stator slots according to specific rules. Their function is to generate a rotating magnetic field when supplied with three-phase AC power. The frame is usually cast iron; large asynchronous motor frames are generally welded from steel plates, while miniature motor frames use cast aluminum. The frame fixes the stator core and front/rear end shields to support the rotor and provides protection and heat dissipation. Enclosed motor frames have cooling fins on the exterior to increase the heat dissipation area. Protected motor frames have ventilation holes in the end shields to allow direct air convection between the interior and exterior for better cooling. End shields primarily fix the rotor, providing support and protection. The rotor consists of a core and windings. The rotor core uses the same material as the stator, made by punching and stacking 0.5 mm thick silicon steel sheets. Holes are uniformly distributed on the outer circumference to accommodate the rotor windings. Typically, the inner circle of the silicon steel sheets remaining after punching the stator core is used to punch the rotor core. In small asynchronous motors, the rotor core is directly press-fitted onto the shaft. In large and medium asynchronous motors (rotor diameter above 300~400 mm), the rotor core is pressed onto the shaft using a rotor spider. Rotor windings are classified as squirrel-cage or wound-rotor. (1) Squirrel-cage rotor: The rotor winding consists of multiple conductive bars inserted into the rotor slots and two ring-shaped end rings. If the rotor core is removed, the winding resembles a squirrel cage, hence the name. Small squirrel-cage motors use cast aluminum rotor windings, while motors above 100KW use copper bars and copper end rings welded together. Squirrel-cage rotors are divided into impedance-type, single-cage, double-cage, and deep-bar types, each with different starting torque characteristics. (2) Wound rotor: The wound rotor winding is similar to the stator winding, consisting of a symmetrical three-phase winding, generally connected in star configuration. The three output terminals are connected to three slip rings on the shaft, which connect to the external circuit via brushes.

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