The cause of the abnormality of the motor controlled by the inverter

Voltage vf and v difference: The two have different meanings, vf on the battery represents the feedback voltage, while v represents the capacity of the battery, which is the unit of measurement of voltage. Lithium battery is a kind of battery with lithium metal or lithium alloy as the positive/negative electrode data and the use of non-aqueous electrolyte solution. ...

CDHR16 series strip fuse disconnector with an additional frequency of 50Hz, an additional operating voltage of 500/690V, and an additional operating current of 630A, which is mainly suitable for power distribution circuits and motor circuits with high short-circuit current, is used as a power switch, isolation switch, and as AC circuit short-circuit protection.

The electrical control system is generally called the secondary control loop of electrical equipment, different equipment has different control loops, and the control methods of high-voltage electrical equipment and low-voltage electrical equipment are also different. Specifically, an electrical control system refers to a combination of several electrical components that are used to complete the operation of a certain ...

1. The problem current reaches or exceeds the set operating current value. 2. The problem current continues to arrive at the set time of action. Therefore, it is necessary to ensure that the Delixi circuit breaker will not trip beyond its liquid level. Current setting ...

1. If strong electricity and weak electricity are to be separated by a long distance from the horizon walking line, the interval should generally exceed 30 cm to prevent disturbance and be interspersed with each other. 2. In order to facilitate the future line change, the PVC pipe must be cut down and straightened as much as possible.

Quickness: It means that the maintenance device should be able to remove the short-circuit fault as soon as possible, and its purpose is to improve the stability of the system, reduce the damage to the faulty equipment and lines, reduce the scale of the fault, and improve the effect of active reclosing and active investment of standby power supply or standby equipment. Reliability: Refers to ...

Voltage regulators have become an integral part of many appliances in household, industrial, and commercial systems. Earlier, manually operated or switchable regulators were used to raise or lower the input voltage to supply the output voltage within the desired range. This stabilizer is built with electromechanical relays as switchgear ...

The control of the inverter is nothing more than the fundamental logic of starting, aborting, forward rotation, rotation, and speed regulation, which fundamentally requires that the level condition is effective, rather than the rising edge is effective, so the use of button switches to control the inverter is generally required to use the self-protection of the button...

All large AC power blocks are connected by a three-phase transformer for transmission and distribution at high voltage levels. Single-phase transformers can be electrically connected to form a three-phase transformer bank in a distribution system. But the standard is to combine a single phase coil into a three-phase transformer unit on a common core ...

When the VFD is viewed regularly, the power supply should be blocked, the operation of the VFD should be stopped, and the cover of the VFD should be removed. The first thing is to check the places that cannot be seen without downtime, or the places where it is difficult to find problems on a daily basis, as well as the inspection and adjustment of electrical characteristics. After blocking the VFD power supply, the main power ...

According to the controlled target and operating parameters such as voltage, current, power, frequency and operating system, the additional parameters of the contactor are determined. 1) The coil voltage of the contactor should generally be lower, so that the insulation requirements of the contactor can be reduced, and it is safer to use. But for the sake of the party ...

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, ...

Delixi 3P air switch, additional current 630A, additional voltage 380V. The Icu=Ics=70kA of this circuit breaker. When the short-circuit current reaches 70kA, can the circuit breaker still be used? Assuming it works, the ICU is now at its limit, which is paradoxical. Assuming it can't be used, Ics is 70KA, clarifying ...

1. Classification of switch operation organization At present, the switches we encounter are generally divided into many types, such as oil-rich type (old model, now you can't see it at all), oil-poor type (some user stations also have it), SF6, vacuum, GIS (combined electrical appliances) and so on. These are all about the arc extinguishing medium of the switch. ...

In the project, because of the 630 A circuit breaker wiring bar in the 500 kVA box-type transformer, see the second circuit breaker and circuit breaker on the left in the figure. The temperature of this corresponding region is significantly higher than that of the other two corresponding regions, and the other two phases are also hot, and the copper bars of this phase have turned white. There is no induction Deli ...

1. Significant energy-saving effect: up to 20%-45% 2. Optimize electrical equipment: when the motor starts, there is no large current impact, which reduces the load of the transformer 3. Convenient operation: the speed of the motor is directly given according to the size of the air volume, and the accuracy of the air volume is adjusted accurately ...

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. Install AC reactor and DC reactor. When the inverter is used in the distribution transformer capacity is greater than 500kva, and the transformer capacity is greater than 10 times of the inverter capacity, an AC reactor is installed on the input side of the inverter. And when the output voltage of the distribution transformer is unbalanced and uneven in three phases ...

1. The socket quality is low quality First of all, we should check whether the socket is a miscellaneous and inferior product, the copper clamping force in the defective socket is not good, resulting in poor contact between the socket and the plug, and the socket and plug will heat up after a long time of electrical use. So be sure not to buy cheap miscellaneous ...

The circuit breaker insulation incident can be divided into the internal insulation terminal and the external insulation incident. The hazards caused by internal insulation incidents are generally greater than those of external insulation. (1) Internal insulation incidents The internal insulation end is mainly a bushing and a current transformer ...