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Introduction to Low Voltage Reactive Power Cabinet
Power distribution equipment forms the backbone of modern electrical systems, efficiently managing and allocating electricity to ensure seamless power supply across various sectors.
There are control gadgets that help manage how electricity flows, safety features like circuit breakers to prevent accidents, and measuring tools to check how much power is being used. There are also special paths for electricity to travel safely. All these pieces together make up a neat and organized power system inside a cabinet.
Now, let's talk about something called "reactive power compensation cabinets." These are special cabinets that help fix a certain kind of problem in the electricity flow. You see, not all the electricity we use does work directly, like turning on lights or making machines move. Some of it, called "reactive power," is like a helper energy that keeps everything running smoothly but doesn't do the visible work itself.
These special boxes are great at controlling "extra energy." They have smart systems inside that adjust the extra energy just right to keep things balanced. This careful adjustment saves energy and stops电压 from jumping around, so the whole electricity system works smoothly without wasting any power.
There are many types of these boxes, each using the latest technology made for certain problems. Active Power Filters (APFs) are like tuners for the electricity network, getting rid of disturbances for a clean power source. On the other hand,SVG Static var generator react fast, changing with the system's needs by adding or removing power as needed.
Some boxes also mix capacitors and reactors, which are trusted parts working well together. Capacitors store energy like a tank, ready to give power when needed, while reactors control the electricity flow, acting like traffic directors for electric currents.
Picking the right box is a careful job. Things like how much electricity is used, how big the place is, and how it works are all thought about very carefully. Each choice is made with a plan to use electricity in the best way for that place.
In simpler terms, these boxes show a range of clever solutions. Each one is important for using energy well, making the electricity grid strong and stable, and making sure power is handled carefully and responsibly. They prove how smart ideas connect advanced technology with what we really need for managing energy today.
Right now, our company offers three types of these complete power setups:
1. **APF/SVG Cabinet**: Here, the cabinet is filled with special devices called APF or SVG modules that balance electricity. Inside, you'll find a screen to control it, a safety switch (circuit breaker), a transformer, fuses, and protectors against power surges.
2. **Hybrid Compensation Cabinet**: This cabinet combines APF/SVG modules with another set of parts called capacitor reactors. Just like the first type, it has a control screen, safety switches, transformers, fuses, surge protectors, and adds those capacitor reactors. These reactors come in regular or 'smart' versions, and they're made of capacitors and reactors that help control electricity flow with switches.
3. **Capacitor Compensation Cabinet**: This one focuses on using capacitor reactors as the main tool for balancing electricity. It includes a group of these reactors, a controller for managing reactive power, a switching switch, a cabinet-contained transformer, fuses, and surge protection. Again, the capacitor reactors come in standard or advanced ('intelligent') versions, with basic ones consisting of capacitors, reactors, and switches to manage power flow.
At the same time, the capacitor reactor assembly is divided into common capacitor reactance and intelligent capacitor. Common capacitor reactor components include capacitors, reactors and switching switches.
How to calculate reactive power compensation capacity?
Installed capacity and actual output capacity of capacitor
The installed capacity of the capacitor refers to the rated capacity of the capacitor, that is, the output capacity under the rated voltage (such as 480v).
The output capacity of the capacitor refers to the output capacity of the capacitor under the system voltage (such as 400V).
The conversion formula between actual output capacity and installed capacity is as follows:
Qc=Qcr×(1/1−P)÷(Urc/Un)²
Where Qc is the actual output capacity, Qcr is the rated capacity of the capacitor, P is the reactance rate, Un is the system voltage, and Ucr is the rated voltage of the capacitor.
For example, a capacitor with rated voltage of 480v and 50kvar is connected in series with 7% reactor, and its actual output capacity is
Qc=50kvar×(1/1−0.07)÷(480/400)²=37.3kvar
Similarly, if the customer requires the actual output capacity of the site to be 300kvar and the reactance rate to be 7%, the installed capacity
Qcr=300kvar × (1−0.07) × (480/400) ² ≈400kvar
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Common capacitor |
Series reactor
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Intelligent capacitor |
YT Power Quality Solutions
Yingtong electric can select SVG / APF / Hybrid cabinet according to customer needs. We can provide a series of customized services including APF / SVG installation mode, voltage, frequency, matching common capacitor, reactor, intelligent capacitor, LCD screen, etc.
SN | Item |
Rated Capacity |
Factory Model |
Dimensions (W*D*H,MM) |
N.W. (KG) |
Packing Size (W*D*H,MM) |
G.W. (KG) |
1 | SVG | 10kVAr | YTPQC-SVG/10-4-4L-RW | 360*402*125 | 20 | 740*690*445 | 25 |
2 | SVG | 15kVAr | YTPQC-SVG/15-4-4L-RW | 360*402*125 | 20 | 740*690*445 | 25 |
3 | SVG | 30kVAr | YTPQC-SVG/30-4-4L-RW | 505*550*190 | 34 | 740*690*445 | 40 |
4 | SVG | 50kVAr | YTPQC-SVG/50-4-4L-RW | 505*550*190 | 35 | 740*690*445 | 41 |
5 | SVG | 75kVAr | YTPQC-SVG/75-4-4L-RW | 505*570*280 | 53 | 740*690*445 | 63 |
6 | SVG | 85kVAr | YTPQC-SVG/85-4-4L-RW | 505*570*280 | 54 | 740*690*445 | 64 |
7 | SVG | 100kVAr | YTPQC-SVG/100-4-4L-RW | 505*570*280 | 55 | 740*690*445 | 65 |
SN | Item | Rated Capacity | Factory Model | Dimensions (W*D*H,MM) |
N.G (KG) |
Packing Size (W*D*H,MM) |
G.W. (KG) |
1 | APF | 15A | YTPQC-AHF/15-4-4L-RW | 360*402*125 | 20 | 740*690*445 | 25 |
2 | APF | 25A | YTPQC-AHF/25-4-4L-RW | 360*402*125 | 20 | 740*690*445 | 25 |
3 | APF | 50A | YTPQC-AHF/50-4-4L-RW | 505*550*190 | 34 | 740*690*445 | 40 |
4 | APF | 75A | YTPQC-AHF/75-4-4L-RW | 505*550*190 | 35 | 740*690*445 | 40 |
5 | APF | 100A | YTPQC-AHF/100-4-4L-RW | 505*570*280 | 53 | 740*690*445 | 63 |
6 | APF | 125A | YTPQC-AHF/125-4-4L-RW | 505*570*280 | 54 | 740*690*445 | 64 |
7 | APF | 150A | YTPQC-AHF/150-4-4L-RW | 505*570*280 | 55 | 740*690*445 | 65 |
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