YTRVF(W)Variable一Frequency Three-Phase Asynchronous Stewing Motor for Tower Crane

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Overview
This series motor is a variable-frequency three-phase asynchronous motor exclusively designed for tower cranes and other similar dewing mechanisms. It is applied to the dewing
mechanisms in very harsh working conditions such as construction site or open pit quarry.

Features

With introduction of spline drive shaft, it has good mechanical bearing capacity;
The motor is a variable-frequency motor featuring a wide range of speed regulation, high efficiency, small starting current, big starting torque and overload ability;
A thermal protection component is buried into the in winding, making motor more safer and reliable;
Excellent dedicated variable-frequency insulation materials are adopted, improving greatly the insulation reliability;
Compact structure, small volume, lightweight, so it can be braked quickly and positioned accurately. It is suitable for frequent starting and braking;
YTRVFW series motor is provided with an eddy current brake on the basis of YTRVF series. It enables more smooth starting and deceleration braking, making the operation
more smooth and accurate

Users’Options:
This series motor is divided into F1 and F2
F1 with airvane brake;will be determined by the
F2 without airvane brake;users when signing the contract but an encoder interface can be reserved

Q:Why is an A/C motor not used as common as an Induction motor? Whereas, A/C generator is a household name.: there are other kinds of AC motors i.e. synchronous with different characteristics

Q:I know AC is more expensive and DC does quite have the performance... but I'd like a secondary input. Cost is of no matter, however performance, torque, maintenance, and efficiency are all concerns.: DC okorder /

Q:I need planes on how to build a generator from an electric motor. I am wanted to use a 16 HP Power Diesel tractor motor. Can any one help?: well, we still need a litle more info to give a really correct answer. do you want to generate single phase or three phase power? is it safe to assume this will NOT be connected to the power grid .... that is it will be used to generate power or emergency power and not to generate power to sell back to the power company. -------------------------- the reason for these questions is that most AC motors CANNOT be operated as a generator , except for one special type called a 'synchronous machine' its called a machine insead of a motor because it can operate as a motor or a generator. these machines are fairly expensive, and not that easy to find. a three phase snchronous machine of this size would certainly be a possibility. however, i dont believe a single phase machine of this size is even possible? and if it was, would be extremely rare. now, there is an exception ... induction motors can be used as generators as long as they are connected to the power grid. simply put, u connect the motor and turn it on ... then try to force it to go faster than it want to with an outside prime mover (like an engine). (a rude and crude method at best) i personally would look seriously into purchasing the 'electrical portion of the generator set (a la carte, they are really quite reasonable) and coupling it to your nice diesel. the engine really is the most expensive part of the deal. look at the northern tool website. and do belt coupling if you want it to be fast and easy. hope this helps

Q:I listen to AM sports talk radio in my job trailer at work and notice that whenever anyone uses an AC motor on site, (Circular saw, corded drills, theading machines) , anything with coils and brushes, I get horrible static through the radio. Is there a filter to eliminate this noise?: You might try a differrent kind of radio. Like one of those that are made by tool manufacturers for job sites. They have a lot of shielding around the tuning circuits to reduce the amount of EMI from power tools that gets picked up by the tuning circuits. You can't use a filter to reduce the noise. You need better RF shielding.

Q:Common problems of AC motors: Prevention: (1) eliminating the pulsating flux and power harmonics (such as in the inverter output side with AC reactor); (2) motor design, the bearing seat and a base bearing insulation insulation cover, the outer ring of the rolling bearing and the end. 2, why can't the General Motors be used in the plateau area? The altitude has adverse effects on motor temperature rise, motor corona (high voltage motor) and commutation of DC motor. We should pay attention to the following three aspects: (1) the high altitude, the motor temperature rise, the output power is small. But when the temperature drops with the elevation, it is enough to compensate the influence of elevation on the temperature riseWhen the rated output power of the motor can be changed; (2) high voltage motor to take anti corona measures in the plateau; (3) altitude against commutation, be sure to use carbon materials. 3, why should not the motor run light load? When the motor is in light load, it will cause (1) the motor power factor is low; (2) the motor efficiency is low. Will cause waste of equipment and uneconomical operation. (1) the load is too large; (2) lack of phase; (3) the air duct is blocked; (4) the low speed running time is too long; (5) the power supply harmonic is too big.

Q:Explain how using a commutator rather than slip rings allows dc rather then ac to be used to drive a motor.: The commutator changes the armature's winding power connections as it rotates, so that the pole pieces are always energized to the right polarity for the motor to spin. Obligatory wiki link below has a nifty diagram.

Q:i have two questions:-1) What is the main difference between an AC and DC motors in their construction?2) What makes an induction motor-turn?: 1) DC motors have a commutator whilst AC motors do not. 2). The torque generated by current in the stator winding reacting with the magnetic field produced by current in the rotor. In the induction motor the rotor current is driven by voltage induced by the field produced by the stator winding currents - hence the name induction motor.

Q:lionel trains: I am not understanding your question; Lionel Trains normally use reversible universal motors and are run on AC.

Q:Is the single-phase carbon brush motor a direct current motor or an AC motor?: The role of the motor is to change the current direction of the DC motor and AC motor, the DC motor is to change the rotor's conductive coil, thereby changing the rotor magnetic pole. Thereby changing the motion of the motor. The carbon brush is used for motor commutator or slip ring, as sliding contact body import and export current, its thermal conductivity, and good lubrication performance, and has certain mechanical strength and direction of the spark of instinct. Almost all motors use carbon brush, which is an important component of the motor.

Q:What's the difference between a three-phase AC motor and a DC motor?: In general, the armature winding of the three-phase AC motor is on the stator, and the armature winding of the direct current motor is on the rotor;

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