1. According to the requirements of the device part and the needs of the maintenance function, reasonably select the motor maintainer model and its various maintenance action parameter settings;
2. According to the requirements of the product operation manual, the correct device should be connected correctly according to the use of each terminal, and the operating power supply should be connected before the control loop, and pay attention to the nominal voltage and the practical voltage;
3. When the motor maintainer is equipped with a current conversion ratio transformer, if the equipment needs to be displayed by an ammeter on site or in the control room, it is best to have another current transformer, otherwise it will have an impact on the current display of the phase with the ammeter;
4. Do not use the supporting transformer and display part of different numbers together with the device split maintainer;
5. It can be improved according to user requirements, and the output of analog 4-20 mA interface should be matched with the connected equipment;
6. When the low-voltage system is properly grounded and the TN-C maintenance system is maintained, the grounding maintenance line of the equipment on the load side of the maintainer must be changed to independent maintenance grounding according to the TT system, and the neutral wire shall not be repeatedly grounded and shall not be used as a maintenance line.
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Circuit breaker control loop to reduce damage method - Delixi
1 Anatomy of the causes
The various causes of the burning of the control loop components of the unmanned station are analyzed and classified as follows:
· When the personnel on duty operate, the precautions are not well grasped or the operation is improper;
· The organization does not lock and close the operation when it is not stored in energy, and the auxiliary contact of the switch cabinet ...
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Problems in the installation and use of Delixi voltage regulator
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?
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Delixi inverter load type and selection points
The correct selection of the inverter is very important for the normal operation of the control system. When selecting an inverter, it is necessary to have a thorough understanding of the load characteristics driven by the inverter. In practice, people often divide production machinery into three types: constant torque load, constant power load and fan and pump load. ...
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Type of use of AC regulated power supply
(1) Ferromagnetic resonant communication regulator: a communication regulator composed of a full choke and a corresponding capacitor, with constant voltage voltammetry characteristics. The full type is a typical structure in the early stage of this type of regulator. It has simple structure, convenient production, wide allowable scale of input voltage, reliable operation, and overload energy.
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Analysis of various models of Delixi circuit breaker
CDB1 miniature circuit breaker is a current-limiting high-breaking miniature circuit breaker with overload and short-circuit two-layer maintenance, which is suitable for communicating 50Hz, additional voltage 400V and below, and additional current 63A and below circuits.
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What are the advantages and disadvantages of dry and oil regulators? - Delixi
Oil Regulator: Also known as non-contact inductive regulator or intelligent non-contact regulator (only the name of the company's own selling point).
Forte:
1. No contact, no protection, impact resistance (especially instantaneous impact, 2 times of normal.) The reason for this is the slow response, which ...
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Using a soft starter to misconception - Delixi
In the use of soft starters, some users often have some faulty concepts such as:
1. It is thought that whether the motor can start successfully is related to the function of the soft starter, and a good brand or even a foreign brand should be selected under heavy load.
2. When the motor is not ...
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Brief description of power distribution appliances - Delixi
1. The difference between power distribution appliances and control appliances
Power distribution appliances: As the name suggests, it is a device that distributes electricity. Electricity, after coming out of the generator, is output by the bus, and can not be directly connected to the power equipment, and the demand is first output into the power station, which is the power distribution equipment, which is ...
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Delixi inverter operation mode
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.
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Delixi EM60 series inverter to factory settings
First, the process of inverter rehabilitation factory value
1. Study the manual and find the corresponding function number, or key combination.
2. Confirm that the parameters can be corrected (sometimes the inverter will set the parameter to write the protection function in order to prevent the parameters from being changed randomly, and the password must be guaranteed to enter the correction) ...
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Changes in the control mode of the inverter - Delixi inverter
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.
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Delixi rangefinder analysis
Delixi Group focuses on low-voltage power distribution and industrial automation in the field of comprehensive solutions suppliers, founded in 1984, is a collection of industrial operations, brand operations, capital operations as one of the large enterprise groups, for 18 consecutive years ranked among the top 500 Chinese enterprises. Delixi rangefinder is designed for ...
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Delixi selection of wire points
When buying wires, the first thing to look at is two aspects: conductors and insulation.
1. Conductors
1. Color
High-quality copper is called "red copper" or "red copper" - the color of this copper is red, purple, and purple-red.
The worse the copper ...
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Delixi contactor has normally open point and normally closed point reasons
If you're wondering why there are normally open and normally closed contacts in communication contactors, let's first look at what these contacts are used for. Normally open and normally closed contacts are electrical components used to complete self-locking, interlocking or interlocking tasks, and can also be used to control other components or signal indicators.
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Thermal calculation of Delixi linear regulator
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. Thermal resistance should have a technical standard documented, and if it is not available, it is necessary to consult the manufacturer. Basically...
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Delixi relay maintenance method
Relay is a kind of electrical appliance that turns on or off the control circuit according to the change of external input signals, such as electrical quantity (voltage, current) or non-electrical quantity (heat, time, speed, etc.), in order to complete the control or maintenance mission.
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Regularly inspect the inverter steps and methods - Delixi
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 ...
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How to change the original parameters of the inverter and re-set - Delixi
The inverter has many set parameters, each of which has a certain selection range. In the process of use, it is often encountered that the inverter cannot operate normally due to improper parameter settings. Therefore, the relevant parameters must be corrected.
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Circuit breaker tripping conditions and solutions - Delixi
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 ...
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Delixi parameter voltage regulator performance and advantages
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, ...
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