1. Single-phase input/single-phase output:
If the capacity is relatively small, the single-entry UPS hanging on any one-phase mains will not be troublesome to the three-way distribution balance of the mains into the household, the load capacity is small, and the output line diameter (current value) of the single-phase output is not large, and the single-phase inverter can be selected, so the UPS with small capacity (generally less than 15KVA) is mostly single-in/single-out.
2. Three-phase input/single-phase output mode:
When the capacity is slightly larger, such as a load greater than 20KVA, if it is hung on a single-phase input electricity, it will be troublesome to balance the input power distribution on the site, and step on the three-phase input to actively distribute the input current equally, so as to effectively solve the balance problem. But the single-phase output is not the larger the capacity, the better, the single-phase inverter output determines the demand to choose the single-phase bypass input structure, when the UPS capacity is greater than 20KVA, the single-phase 20KVA bypass input demand is relatively large, the bypass does not work when the UPS is working normally, even if the unreasonable wiring and switch selection will not be revealed, once the UPS main circuit fault or overload to bypass operation, UPS will transfer the entire load to the bypass input loop, forming a serious imbalance in the system power supply. In serious cases, tripping will be formed, or due to potential unreasonable wiring and switching capacity, the bypass failure will be formed in time, and the reasonable front-end electrical equipment will be formed, and the power supply resources will be wasted due to the consideration of unbalanced equipment. Considering the requirements of single-phase bypass input and balance, the current pressure of the single-phase inverter is absorbed, and the output of the single-phase inverter is generally within 20KVA. Therefore, the UPS in the capacity range of 8-20KVA uses single-phase inverter and single-phase bypass input three-in/single-out mode.
|
More on that
|
Inverter selection principle - Schneider
1. Select the inverter according to the load characteristics.
2. When selecting the inverter, the actual motor current value should be used as the basis for the selection of the inverter, and the additional power of the motor can only be used as a reference. Secondly, the output content of the inverter should be fully considered.
|
|
Schneider Instrumentation Classification Standard
The classification specifications for the appearance of the instrument are as follows:
The appearance of the instrument is a comprehensive product of a variety of science and technology, with a wide variety of varieties, wide application, and constantly updated, and a variety of classification methods. According to the purpose and use of the use of the main measuring instrument, car appearance, tractor appearance, marine ...
|
|
Dynamic phase angle tuning of inverter motors – Schneider
1. The control cabinet, the main engine, and the brake connection line are correct, and the voltage is correct;
2. Safety circuit, door lock circuit is normal, limit switch, speed change switch and close;
3. The connection cable from the encoder to the PG card must be reliable and accurate;
...
|
|
Schneider ATV71 inverter installation and modulation setting steps
1. Schneider inverter menu:
(1) Simple start:
Self-tuning: If the manifestation is "unfinished", then select "supplication self-tuning" until the manifestation is "finished", i.e., the completion of self-tuning;
Acceleration moment: a ...
|
|
Schneider inverter has misunderstandings in practical applications
Myth 1: Whether the inverter can complete power saving
The use of inverters can save electricity Some literature claims that inverters are power-saving control products, giving people the impression that only the use of inverters can save electricity. In practice,
The reason why the inverter can save electricity is because it can ...
|
|
Power wiring requirements for Schneider PLC
The power supply of the DPLC should be taken from the trunk line with a relatively stable voltage or the special line led by the bus of the substation to ensure the voltage quality of the PLC. If the voltage fluctuates too much, consider installing a voltage regulator or uninterruptible power supply (UPS). 2. The power cord is best to use twisted pair, and its cross-sectional area should not be less than 2 square millimeters.
|
|
Frequency converter main circuit fault solution - Schneider
According to the statistical analysis of the frequency and shutdown time of the specific common problems of the inverter, the repair rate of the main power supply circuit accounts for more than 60%; The main operating parameters are set improperly, resulting in about 20% of common problems; 15% of the common problems of manipulating circuit boards; 5% of common problems are caused by incorrect operation and external anomalies ...
|
|
How Schneider contactors work
1. Contactor refers to an electrical appliance that uses a coil to flow through an electric current to generate a magnetic field, so that the contact is closed, and then the load can be controlled. Because it can quickly block the main circuit and frequently connect the equipment with high-current control circuits, it has been widely used in electrical engineering.
|
|
Factors influencing the differential thermal analysis of instrumentation - Schneider
The operation of differential thermal analysis is simple, but in practical work, it is often found that the same sample is measured on different instruments, or different measurements are measured on the same instrument, and the results of the differential thermal curve of industrial electrical appliances are different. The high temperature, shape, area, and size of the peaks will all change. ...
|
|
Schneider PLC signal light meaning
Take the Schneider PLC with model number TWDLCAA40DRF as an example:
The first PWR: is the meaning of power supply;
The second RUN: is the PLC operation indicator; Long dark: The application is not fulfilling; Shine: The controller is in a stay or a mistake in performance; Solid on: The controller is in operation ...
|
|
AC-DC inverter composition and function - Schneider
The AC-DC inverter main circuit consists of three components: the rectifier main circuit, the center circuit and the inverter circuit.
1. The main circuit is the power replacement part that provides voltage regulation and frequency regulation power supply for the asynchronous motor, and the main circuit of the inverter can be roughly divided into two categories: the voltage type is the voltage source ...
|
|
Technical causes of Schneider low-voltage circuit breaker accidents
(1) Operational failure
Operation failure is manifested by the dragging or misoperation of the circuit breaker. Because the fundamental and important function of the high-voltage circuit breaker is to act correctly and quickly remove the fault of the power grid. If the circuit breaker is dragged or misoperated, it will pose a serious threat to the power grid, first of all: (1) expansion ...
|
|
Circuit breaker failure protection - Schneider
Circuit breaker failure maintenance refers to the relay maintenance action of faulty electrical equipment when the trip command is announced and the circuit breaker refuses, the maintenance action information of the faulty equipment and the current information of the rejected circuit breaker constitute the judgment of circuit breaker failure, and other related problems in the same plant and station are cut off in a shorter time limit.
|
|
Inverter selection and capacity matching - Schneider
In addition, it is unscientific to select the inverter body alone, without considering whether the inverter selection and capacity matching are appropriate.
...
|
|
Schneider considers the safety of lithium batteries from four perspectives
In China, the trend of UPS switching to lithium batteries will become more and more rapid. As a global leader in data center infrastructure solutions and services, Schneider Electric found that in addition to the purchase price factor, Chinese customers are now choosing the weight of UPS lithium batteries after accurate positioning and inquiry of shopping malls.
|
|
How to prevent counterfeiting from Schneider switch sockets
1. Logo
The logo of the product is a status symbol, so it will be made very exquisitely. Schneider switches are also very careful in the production of logo, each letter is like an independent work of art, and let's see that the letter "A" is flat and wide. But the imitation ...
|
|
Schneider's method of improving the power factor of UPS power supplies
One. The significance of the progressive power factor.
1. Make full use of the ability of power equipment.
Each power supply unit has additional capacity, i.e. depending on the power. The total power output of the power supply equipment S, - part of the active power, the other part is the reactive power, the smaller the ...
|
|
The operation essentials of Schneider disconnectors
Schneider Barrier Features: First of all, Schneider Barrier Switch can be used to block the power supply, it can disconnect the live equipment from the high-voltage maintenance equipment, and it can also see a significant disconnection point on it. The second is that Schneider Barrier Switches are able to work with circuit breakers to reach the point where the operation of the system is changed.
|
|
Inverter maintenance inspection steps – Schneider
1. Check whether the appearance of the inverter is in good condition, including whether the indicator light is in normal operation, whether the task control function of the operation panel is complete, and carefully observe the appearance of the inverter in operation conditions, and do the corresponding recording operations; When repairing the inverter, check whether the voltage value and current value exceed the allowable ...
|
|
Pay attention to the problem when using UPS power supply - Schneider
1. The parameters set in the host cannot be changed at will during use. In particular, the parameters of the battery pack will directly affect the service life. With the change of ambient temperature, the float charge voltage should be adjusted accordingly. Generally, 25 °C is the standard, and when the ambient temperature rises or falls by 1 °C, the float charge ...
|
|
Contact
working hours
