ABB AC Motor High Low Voltage NV Series

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Brand Name:ABBModel Number:HXR 400 SeriesType:Squirre Cage Motor
Frequency:50.2 HzOutput Power:350 KWProtect Feature:Explosion-proof
Phase:Three-phaseCertification:CEAC Voltage:690V
Place of Origin:Shanghai China (Mainland)Efficiency:IE 1Packaging Detail::EXPORT STANDAR WOODEN CASE
StructureAsynchronous MotorFunctionDriving UsageUniversal

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Q:The difference between synchronous motor and asynchronous motor
Synchronous motor for motor operation. The synchronous motor can adjust the excitation current to make it run in the leading power factor, power factor, to improve the power grid so that large equipment, such as large air blower, water pump, compressor, ball mill, rolling mill, synchronous motor driver. This advantage is particularly pronounced when low-speed large equipment uses synchronous motors. In addition, the speed of the synchronous motor is entirely determined by the frequency of the power supply. When the frequency is constant, the speed of the motor is certain, and it does not change with the load. This characteristic is very important for some transmission systems, especially for multi machine synchronous drive system and precise speed regulation and speed stabilization system. The stability of synchronous motors is relatively high. The synchronous motor usually operates under the excitation state, and its overload capacity is greater than that of the corresponding asynchronous motor. The torque of an induction motor is proportional to the square of the voltage, while the torque of the synchronous motor is determined by the product of the electromotive force generated by the voltage and the excitation current of the motor, which is only proportional to the primary voltage of the motor. When the grid voltage suddenly drops to the rated value of 80% when the torque of asynchronous motor is decreased to about 64%, and stop with real load; and the torque of synchronous motor is not decline, but also through forced excitation to ensure stable operation of the motor.
Q:Which price is higher, AC motor or direct current motor? Which one has a longer service life?
It can only be said that the cost of DC is higher (in comparable conditions)AC motor life, a little bit of the conference room
Q:Can the welding line of AC welding machine be dead?
The welding line of AC welding machine is the two line of electric welding machine.The welding wire caused by electric shock accidents, because the two line is low voltage (no-load voltage generally 50 - 90V), people understand the causes of electric shock, often mistakenly think that the welding line two times is "safe", leading to accidents causing death two line not uncommon a shipyard is a young female welder, welding is the cabin, the cabin due to high temperature and poor ventilation, body sweating, canvas overalls and leather gloves are wet. When replacing the electrode holder when touched, because of spasm fall backward, falling out of the neck in the holder, failed to cause electric shock accident died after death. The accident tells us that the two line voltage of the welder is low, but it is enough to kill.
Q:How to make the AC motor stop rotating rapidly?
Electromagnetic brake, load and DC braking or braking circuit of DC power consumption
Q:Can any 220V AC motors be reversible?
The motor can be reversed, just need to change the wiring, that is, to change the capacitance of the line can be adjusted
Q:What's the difference between a variable frequency motor and a servo motor?
Then it is servo motor, variable frequency motor and the main difference with the encoder, and then transmitted to the servo motor drive, and then using the control theory, such as gain, adjust time, simply say a servo motor is a closed-loop control system, and quick start, stop, load capacity a variable frequency motor, with these characteristics, also makes the speed, torque, third position control method for high requirement application. 1, servo motor and inverter and working principle of AC motor is basically the same, belong to the AC-DC-AC voltage type motor drive, but the technical requirements of big differences, so there are great differences in the aspects of motor and driver design.
Q:How to synchronize two ordinary AC motors?
The motor does not need to be synchronized. As long as the same type of motor on the line, the two sides automatically run at the same time into the synchronous state. As long as the load on both sides of the motor is not the same. When a motor is switched a little faster, the load of the motor is increased, the speed of the motor is slowed down automatically, the load of the other motor is reduced, and the speed of the motor is increased naturally.
Q:Is the stepping motor an alternating current motor or a direct current motor?
The stepping motor is an open loop control element which transforms the electric pulse signal into angular displacement or linear displacement. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. Number of pulses can be controlled by controlling the angular displacement, so as to achieve the purpose of accurate positioning; at the same time by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of speed.
Q:How do ordinary AC motors brake?
Reverse brakingWhen the motor cuts off the normal power supply, the power phase sequence of the motor stator winding is changed so that a reverse braking torque is generated.
Q:Can AC motors use direct current?
The DC motor is divided into two exciting modes: series excitation and shunt excitation. The series excited DC motor can be used in both DC and DC as long as the voltage is suitable. Shunt excited DC motors can only be powered by dc.

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