Classification of low-voltage electrical appliances - Delixi

(1) The function is different. An air switch is a kind of circuit breaker that maintains "something", which can maintain the safety of the entire household wiring and appliances, and avoid the overheating and burning of the wires. The leakage maintenance switch is a kind of circuit breaker for maintenance personnel, which can block the circuit in time when leakage is carried out to avoid the danger of electric shock.

1. It can reduce the impact on the power grid, and there will be no problem of excessive peak-to-valley difference. 2. It can speed up the controllable function, and then speed up the slipping according to the needs of the user; 3. The abort mode of the motor and equipment is controllable, ...

Reflected waves caused by a cable-motor impedance mismatch are prevalent in all AC VFD uses. The severity of the problem depends on the length of the cable, the rise time of the PWM (Pulse Width Modulation) carrier, the voltage of the VFD, and the magnitude of the impedance difference between the motor and the cable. ...

The essence of energy feedback is active inverter, and the energy feedback of the general inverter is completed by the reverse parallel three-phase inverter at the uncontrolled rectification of the pre-stage of the general inverter, and the regenerative energy is fed to the power grid. The main circuit of the energy feedback equipment is mainly composed of thyristors, IGBTs and IPM modules.

The disconnector is a kind of switching equipment that is mainly used for "blocking the power supply, reversing the operation, and connecting and blocking the small current circuit", without arc extinguishing function. When the barrier switch is divided into directions, there is an insulation distance between the contacts that meets the specified requirements and a significant disconnection mark; When in the azimuth, it can carry ...

The reducer is a kind of transmission equipment used for low speed and high torque, which uses the speed converter of the gear to reduce the number of revolutions of the motor (motor) to the required number of revolutions, and obtains a large torque organization. Its main function is to reduce the speed and improve the output torque at the same time, and the torque output share is according to the motor ...

Delixi CDRA soft engine is a set of soft start, soft stop, light load, energy saving and multi-functional protection in one of the motor control equipment. This is a shock-free and smooth motor during the entire start-up process. According to the type, it can be divided into equipment type and comprehensive. ...

　　Seriously affect the normal operation of the inverter. The core components of the inverter are IGBT power semiconductor switching components. When they are working properly, they generate a lot of heat. If there is no fan forced cooling, the sensing head will immediately detect (IGBT) overheating (IGBT) and send it ...

Grounding current, also become quiescent current, load regulation (the smaller this value, the stronger the LDO can press the load) linear regulation (the smaller, the less influence of the input voltage on the output voltage, the better the LDO function) power supply ratio (PSSR), reflecting the Delixi LDO to the interference signal ...

1. The inverter runs with the motor at no load 1. To set the power and number of poles of the motor, the operating current of the inverter should be considered. 2. Set the maximum output frequency, fundamental frequency, and torque characteristics of the inverter. The general-purpose inverter is equipped with a number of VPf curves for users to choose.

Founded in 1984, Delixi Group started with thermal relays, 36 years of big waves, has been in the first camp of China's electrical industry for many years, and has been ranked among the top 500 Chinese enterprises for 18 consecutive years. In recent years, under the guidance of the strategy of "manufacturing power", Delixi has focused on the main line of high-end manufacturing, and has taken multiple measures to ...

1. Conductors 1. Color High-quality copper is called "red copper" or "red copper" – as the name suggests, this copper is reddish, purple, and dark red in color. The worse the copper, the lighter the color and the more yellow it is, which is called "brass". 2. Thickness ...

What is the voltage regulator can not be connected in parallel, the voltage regulator is not open for a long time, what will be the problem with the voltage regulator still open under normal voltage, is it said that the voltage regulator and the undervoltage lamp is not lit to clarify that the voltage regulator is normal? Will a normally open regulator burn it out at normal voltage? ...

The inverter lowers the output frequency to reduce the speed of the motor, taking the conditioning air volume as an example. By reducing the air volume, power consumption can be significantly reduced. Why is the operation of the inverter energy-efficient? According to fluid mechanics, power = pressure× flow, flow ...

1. There is no output, no voltage indication or no start when the machine is turned on. Overvoltage or undervoltage maintenance 1. Adjust the internal output voltage adjustable potentiometer 2. The wrong phase and the lack of phase are maintained, and the two phases are arbitrarily replaced by three phases 3. The main control circuit board is broken 3. Replace 4. The output AC has been ...

The traditional textile printing and dyeing industry is a labor-intensive industry, and the degree of automation is not high. Most of the transmissions used are not speed regulation, and most of the occasions that need speed regulation are DC motors, such as warping machines, sizing machines and many printing and dyeing equipment.

1. Voltage circuit breaker problem The contact is overheated, you can smell the power distribution control cabinet, by checking that the moving contact is not completely inserted into the static contact, and the contact pressure is not enough, resulting in a decrease in the switching capacity, causing the contact to overheat. At this moment, it is necessary to adjust the operating organization so that the moving contact is completely inserted into the static contact ...

The switching voltage regulator is a different kind of regulated power supply from the linear voltage regulator, and its circuit types mainly include single-ended flyback, single-ended forward, half-bridge, push-pull and full-bridge. The difference between it and the linear power supply is that the transformer in the circuit does not work at the power frequency, but at the power frequency.

There are three types of motor inverters ●Ordinary function type. The fundamental V/F frequency conversion speed regulation function, speed regulation accuracy and torque control function requirements are not high for general use can be satisfied. ●High function type. V/F frequency conversion speed regulation with torque control function, hoist constant ...

(1) Ferromagnetic resonant communication regulator. It consists of a full choke and a corresponding capacitor, and has a constant voltage volt-ampere characteristic (AC regulated power supply). (2) Magnetic amplifier communication regulator. The magnetic amplifier and the autotransformer are connected in series, and the impedance of the magnetic amplifier is changed by electronic circuits to stabilize the output ...