Normal conditions of operation, installation, and transportation 1 Normal operating conditions Appliances that meet the rules of this code should be able to operate under the following conditions. Note: See Appendix B for the requirements of non-standard application conditions. Non-standard ...

1. Its overall induction skills are the best, its design does not use electronic devices, and the environmental adaptability and stability are the highest. When the capacity of most power grids is sufficient, the voltage is relatively stable, but with the improvement of electrification and informatization, the pollution of some power grids, ...

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? ...

1. When the stabilized power supply is powered on, please do not disassemble the stabilized power supply or pull the input and output cables of the stabilized power supply at will to prevent electric shock or other electrical safety accidents. 2. The input and output connections of the regulated power supply must be reasonably arranged, ...

1. For pure resistive loads such as incandescent lamps, resistance wires, electric furnaces and other equipment, the power of the voltage regulator should be 1.5 times the power of the load equipment - 2 times that of the load equipment, for example, if your electric furnace is about 250W, you can choose a voltage regulator with a power of 500W. 2. Rationality ...

In people's lives, voltage regulators are not short, but some people do not install voltage regulators correctly, which leads to great safety hazards in the use of voltage regulators. Here's how to properly install the regulator: ...

1. The output power of the voltage regulator is the maximum power Basically, most of the nominal power of household appliances refers to active power, and the so-called refrigerators, air conditioners and those water pumps used in the home, etc., most of them are also inductive loads that start instantaneous currents.

Operation failure is manifested by the dragging or misoperation of the circuit breaker. Because the most basic and important function of the high-voltage circuit breaker is to operate correctly and remove the fault of the power grid quickly. If the circuit breaker drags or malfunctions, it will pose a serious threat to the power grid, first of all: (1)) expand the scale of the incident, which may make the original ...

1. Single-phase circuit single-phase power supply - power supply with a single AC electromotive force. The fundamental power supply method for civil electricity. Single-phase load – A load that is powered by a single-phase power supply. Household appliances such as lights, televisions, and electric fans are generally single-phase loads. The accounting method is as follows: a. When negative ...

In the process of practical speed regulation, an ordinary AC power supply with adjustable frequency can not meet the requirements of speed regulation and control of asynchronous motors, and must also take into account the effective use of the motor magnetic field, the pressing starting current and the desired torque characteristics, such as low-frequency torque characteristics.

Varieties of circuit breaker accessories It is divided into two categories: in-flight accessories and out-of-flight accessories. The accessories in the machine are the subordinate equipment of the equipment inside the circuit breaker, including four types: shunt tripper, undervoltage tripper, auxiliary switch and alarm switch. Normally the in-flight accessories have to be uncovered with the device, but now ...

1. Its overall inductive skills function is the best, its design does not use electronic equipment, and the environmental adaptability and stability and reliability function are the highest. When the capacity of most power grids is sufficient, the voltage is relatively stable, but with the improvement of electrification and informatization, the pollution of some power grids, ...

There are substantial differences between servos and inverters in terms of application intention and function. Which one to choose depends on factors such as operating mode, load conditions, price, etc. Basically, the performance of the servo is superior to that of the inverter. Therefore, when changing from an inverter to a servo, there are generally no operational problems ...

1. If the fuse is burned out, please approve the load equipment as soon as possible, make repairs in time, and restore power; 2. If you use a fixed amount of fuse, please use a regular line, and do not match it at will, so as not to cause ...

1. If the two branch lines are connected, the current in the zero line flows to each other, which destroys the operating current balance in the zero sequence current transformer and causes the leakage maintainer to malfunction. If you want to use the neutral line of the power branch line as the neutral line of the lighting branch line nearby, it will cause the leakage of the power branch line.

Thermal accounting requires information such as power loss, thermal resistance of the package, and ambient temperature. The power loss is calculated in the same way as the efficiency accounting, which is simply the value of the difference between the output input voltage and the input current. The thermal resistance should have a technical standard documented, and if it is not, it is necessary to ask the manufacturer. Basically...

1. Repair the damage of the inverter rectifier block The damage of the inverter rectifier bridge is also one of the common faults of the inverter, the inverter rectifier block produced in the early stage is mainly diode rectification, and now some rectifier blocks adopt the thyristor rectification method (voltage regulation and frequency modulation inverter). Middle...

1. Overpressure leads to brake pipe breakdown. The so-called overvoltage of the inverter refers to the inverter voltage formed due to various reasons that exceeds the rated voltage, which is reflected in the DC voltage of the inverter DC bus. The overvoltage alarm generally appears at the time of shutdown, and its main ...

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 following options are available on the output side of the drive: 1) Output reactor, when the length of the cable output from the inverter to the motor is greater than the specified value of the product, the output reactor should be added to compensate for the charging and discharging influence of the coupling capacitor when the long cable of the motor is running, so as to prevent the inverter from overcurrent. Output ...

1. If the two branch lines are connected, the current in the zero line flows to each other, which destroys the working current balance in the zero sequence current transformer and causes the leakage protector to malfunction. If you want to use the neutral line of the power branch line as the neutral line of the lighting branch line nearby, it will cause the leakage of the power branch line.