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. When the output voltage of the distribution transformer is unbalanced in three phases and the unbalance rate is greater than 3%, an AC reactor needs to be installed at this moment.
2. Install a passive filter: the passive filter is installed on the AC side of the inverter, and the passive filter is composed of L, C, and R components to form a harmonic resonance loop, when the harmonic frequency of the LC loop is the same as the frequency of a certain higher harmonic current, the higher harmonic can be prevented from flowing into the power grid.
3. Install an active filter: The active filter detects the higher harmonics in the current, and inputs the opposite phase current to the higher harmonic components according to the detection results, so as to achieve the intention of compensating the harmonic current in real time. Compared with passive filters, it has a high degree of controllability and fast response, and has the characteristics of multiple functions. It also eliminates the risk of resonance with the system impedance.
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Precautions for leakage vacuum circuit breaker circuit - Delixi
Leakage vacuum circuit breaker connection: When normal operation, regardless of whether the three-phase load is balanced or not, the sum of the three-phase current phasor through the main circuit of the zero-sequence current transformer is equal to zero, so there is no induced electromotive force in the secondary winding, and the leakage maintainer operates in a closed state. In the event of leakage or ...
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Delixi inverter built-in bypass soft starter CDRA-K3
Delixi built-in bypass soft starter CDRA-K3 series is a set of soft start, soft parking and multi-functional protection in one of the motor control equipment. Realize a smooth starter motor without impact during the entire starting process. CDRA-K3 series has built-in bypass contactor and control power supply.
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Damage and repair of internal electronic components of the inverter - Delixi
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...
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Capacitor identification method of Delixi inverter
1. The capacitance is generally indicated by "C" plus a number in the circuit (e.g., C25 indicates the capacitance numbered 25).
A capacitor is an element composed of two metal films that are placed next to each other and separated by an insulating material. The characteristic of the capacitor is first and foremost the communication through the DC block. The size of the capacitance is ...
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Delixi brought EasyPro series solutions to the fair
Shanghai, September 19, 2018 ---- Today, the 20th China International Industry Fair (hereinafter referred to as the "Industry Fair") officially kicked off in Shanghai. From the perspective of a new breakthrough in the integration of manufacturing and the Internet, this year's industry fair focused on showing the scientific and technological innovation of China's manufacturing profession.
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The difference between Delixi single-phase and three-phase AC voltage regulators
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Judgment and treatment of inverter short-circuit fault characteristics - Delixi
(1) Fault characteristics
a) The first trip may occur during operation, but if it is restarted after resetting, it will often trip as soon as the speed is raised.
b) have a large inrush current, but most drives are now able to perform maintenance trips without damage. Due to the ...
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Drawing precautions for wiring diagram of electrical components - Delixi
(1) The drawing of the wiring diagram and the wiring table shall be subject to the request of GB6988.6-1993 in the "Production of Control System Function Table Diagram".
(2) All electrical components and wires should be marked with letter symbols and wiring numbers that differ from those in the schematic diagram of the electrical circuit. Schematic diagram catalog number, final ...
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Delixi voltage regulator fault phenomenon
Delixi regulator output voltmeter keeps swinging back and forth, and sparks occur at the carbon brush, and the problem phenomenon and cause analysis
1. The contact pressure between the carbon brush and the coil plane is too small
2. The carbon brush is severely worn
Delixi voltage regulator has ...
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Precautions for the use of Delixi three-phase AC voltage regulator
There are many types of three-phase communication regulators in Delixi, the most commonly used ones are SJW and SBW, etc., so we need to pay attention to the process of application:
First of all, it must be operated correctly according to the instructions of the voltage regulator.
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Why is the operation of the inverter energy-efficient? - Delixi
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 ...
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The principle and operation method of Delixi inverter operation
The principle and operation method of Delixi inverter:
1. No-load energizing test of inverter
1. Ground the grounding terminal of the inverter.
2. Pass the power input terminal of the inverter through the leakage maintenance switch.
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Debugging method of servo motor - Delixi
First: Initialize the parameters
Before wiring, initialize the parameters. On the control card: select the control method; Reset the PID parameter to zero; When the control card is powered on, the enabling signal is turned off by default; Save this status to ensure that this is the condition when the control card is powered on again.
The servo motor ...
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How about Delixi switch?
Delixi focuses on the development of green energy-saving industry, the construction of LED ecological industrial chain. It has established an industrial development format with Shanghai as the research and development center and Hangzhou and Jiaxing as the production base of LED lighting products, specializing in the development, production and sales of LED fluorescent lamps, three-proof lamps, downlights, spotlights, street lamps and other high-tech products.
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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:
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Delixi fan and pump load frequency conversion selection
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Lifting...
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Delixi voltage regulator boot voltmeter does not indicate fault analysis and solutions
When the Delixi voltage regulator is turned on, the voltmeter does not indicate the problem phenomenon and cause analysis
1. The plug is not plugged in firmly, and there is no output voltage
2. The fuse is broken
When the Delixi voltage regulator is turned on, the voltmeter does not indicate the problem is solved ...
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Delixi responds to the national strategy to enter the field of high-end production
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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 inverter selection principle
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