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A 2000 kVA Transformer is an electrical device that may transmit power from one circuit to another, or more channels. More significantly, this has a 2 MVA cast resin transformer, which produces a changing magnetic flux by altering the current in any coil of the 2000 kVA transformer.
For over 15 years, Daelim has been designing, producing, and manufacturing high-quality electric goods and equipment. Proven to deliver reliable products and perfect service, Daelim becomes internationally known. More significantly, the company is known for different types of transformers, one of which is a 2000 kVA Transformer.
An electrical transformer is a tool that converts alternating electricity from one voltage to another. It works on the magnetic flux principle and may be configured to “step up” or “step down” voltages. And the magnetic flux in the 2000 kVA transformer can cause different electromotive forces in any other coils base. Without a metallic link between these circuits, energy can be transmitted across multiple coils of the 2000 kVA transformer.
A 2000 kVA transformer is placed in areas where there is no room for a closed enclosure. All connection points in this transformer have a total load current that has been safely contained in a grounded metal casing. Typically, the 2000 kVA transformer is often utilized with underground electric power distribution cables. It can be used to serve one large building or many homes.
The kVA rating, which stands for Kilovolt-Ampere, is the most common way to grade a transformer. The kVA of the load determines the transformer size. In many cases, the load’s power consumption is proportional to the transformer’s rating expressed in VA or kVA. A 1KW (1000 Watt) load, for example, would need a 1kVA transformer with a unity power factor.
For three-phase KVA= (V*I*1.732)/1000
For single-phase KVA= (V*I)/1000
For three-phase MVA= (V*I*1.732)/100,000
For single-phase MVA= (V*I)/1000,000
The transformer’s core directs the magnetic field path between the primary and secondary coils to avoid wasting energy. When the magnetic field reaches the secondary coil, it causes the electrons inside it to migrate. It results in an electric current (EMF). With a voltage regulator of off circuit tap changer, a 2000 kVA transformer has 10,000/400 Voltage.
Various Voltage Ratio:
In engineering, volt-amperes are a unit used to represent the electrical load. The abbreviation for volt-amperes is VA. Metric prefixes like “kilo-” and “mega-” can also be used. One kilovolt ampere is equivalent to 1,000 volt-amperes, while one megavolt ampere is equal to 1,000,000 volt-amperes.
As a result, one megavolt ampere requires 1,000-kilovolt amperes. To convert kVA to MVA, multiply the value by 1,000. For example, if you have 438 kVA, multiply it by 1,000 to obtain 0.438 MVA. 2000 kVA then is equivalent to 2 MVA.
The primary purpose of all transformers is to increase or decrease the alternating current in the electrical system. The transformer provides greater energy efficiency by controlling current flow, which regulates and eventually reduces power expenditures.
Transformers can also be used to interrupt an electric current or stop the flow of power. Transformers are frequently found in breakers, where they use a switch to halt the electric current and protect against high-voltage damage automatically.
The operation of generators fuels the notion of charging batteries. Transformers are used to regulate the voltage that enters the battery during the charging process. It prevents harm to the internal components of the battery. It is critical since an uncontrolled voltage might produce large surges during battery charging.
Large electrical transformers are used in steel production plants to offer various voltages for the manufacturing process. During the melting of steel, a large voltage is necessary, whereas lower currents are required during the cooling process. Transformers are required to supply this variety of voltages by controlling currents inside the system.
Electrolysis is typically fueled by the operation of transformers in chemical design and industrial processes. Electrolysis often involves the use of metals such as copper, zinc, and aluminum. Transformers are utilized to generate a controlled electrical current to drive the chemical reaction from start to finish.
The 3000 kVA transformer falls under the higher spectrum of transformer ratings. It is an essential component for distribution systems, substations, and the like. This article by Daelim will be delivering all the necessary information to know about the 3000 kVA transformer.
Daelim is a company specialized in designing, engineering, and manufacturing top-tier electrical products and solutions. With over 15 of excellent reputation, our company is versed with all the facets of the electrical industry. We have competent experts and professionals that handle the operation, production, and installation of our products.
In a market where good quality with affordable price is hard to come by, we developed Daelim Belific. Daelim Belefic is our transformer brand which is both superb in performance and is cost-efficient. These efforts and innovations raised us as one of the most trusted electric companies globally. Thus, you can never go wrong if you need any electrical products or solutions by choosing Daelim.
Transformer 3000 kVA indicates a specific rating of a transformer. The 3000 kVA shows the rating for the apparent power of the machine. This means that 3000 kVA can handle any load below this indicated rating. Typically, you’ll see these ratings used in power distribution lines where operators deal with higher electrical requirements.
However, you should also note that there are often designs that delimit the bottom range for the transformer’s load capacity. After all, if you want to cater to lower thresholds, lower rating transformers are advisable. Simply, this information sums up that the efficiency of 3000 kVA transformers inclines on higher loads.
In general, transformers can either be step-up or step-down. A 3000 kVA transformer designated on the distribution lines is commonly a step-up transformer. They are necessary for converting voltages required to travel long-distance lines.
In addition, do note that transformers are only capable of converting voltages and not electrical power. Voltage measured in volts is the electrical pressure. Meanwhile, the electrical power measured in Watts takes into account both the electric voltage and current.
Rating represents a unit of thresholds for transformers. Different ratings entail different specifications and performance capacities. As for 3000 kVA transformers, below are a few of the specifications and ranges it can have.
Amperes is the unit of electric current in the SI systems. It indicates the rate at which a charge or a Coulomb flows per second. In transformers, ampacity implies the ampere withholding capacity of a unit. To get the values of this capacity, you need to follow the formula of kVA.
Make note that single-phase and three-phase systems have different methods of computation. Further details are elaborated in the kVA computation in the latter sections of this article.
The following is the ratio of volts to amperes in a three-phase system with an 80% power factor.
208 V : 8327.41 Amps
240V : 7217.09 Amps
480V : 3608.54 Amps
600V : 2886.84 Amps
2400V : 721.71 Amps
4160V : 416.37 Amps
Higher rating transformers like 3000 kVA are typically designed as a three-phase system. This reason is due to efficiency concerns that single-phase transformers are delimited to in higher loads.
As aforementioned, 3000 kVA transformers are mostly three-phase systems. To elaborate, three-phase systems work under a configuration of a “delta” or “Y”. Within this configuration are three windings which the machine subjects to electromagnetic induction to convert voltage. Hence, the term “three-phase” came from this design.
Three-phase systems dominate efficiency and costs in terms of performance, especially for medium to extensive industrial applications. Meanwhile, single-phase designs are advisable for low to medium requirements like residential and small commercial applications.
Perhaps the only disadvantage of a three-phase system is that some designs can be a fire hazard. In which, the details are explained on the following topic.
There are two main types of cooling for transformers – dry type and oil-type.
Dry-type transformers or resin transformers have their coils cast in place with resin. It is a self-cooling design that uses natural or mechanical ventilation. Meanwhile, oil-type transformers have their windings and core submerged in oil to cool down.
It is typical for higher rating three-phase systems to be oil-cooled. Thus, this is where the risk of fire hazards comes from. Transformers which are oil-cooled need more mindful consideration for storage.
Dry-type transformers and oil-filled transformers both serve the same goal, yet they differ significantly.
A cooling medium is required to prevent the transformer from overheating and potentially causing a fire or explosion. When transformers are under load, overheating is unavoidable. It must be addressed since temperature rises are not acceptable when transformers are in operation. Air is used to cool dry-type transformers, whereas oil is used to cool oil-filled transformers.
Some public buildings avoid using oil-filled transformers since they are a fire danger instead of dry-type transformers. It is due to the flammability of the liquid being utilized. A situation in which oil spills, seeps, or becomes polluted may quickly occur, putting the inhabitants of the building in danger. As a result, they may only be used in outdoor installations.
Oil-filled transformers, on the other hand, need more frequent maintenance than dry-type transformers. The oil must also be tested to ensure that there are no contamination issues. The dry-type is very resistant to chemical pollutants, so it won’t need to be dismantled every time a little mishap occurs.
The total load ampacity of a transformer specifies how many amps it can handle. It is significant because it aids in determining the transformer size required to accommodate a specific load.
To calculate the total load ampacity, use the following formula:
So, for a 2000 KVA transformer, we will multiply 2000 x 1000 and then divide it by 240v.
That gives us 8,333 amps. So, for a 2000 KVA 240v single phase transformer, the total load ampacity is 8 333 amps.
For a more transparent comparison, below are the set of considerations to check in choosing between oil-cooled and dry-cooled transformers.
Maintenance for dry-type designs can be more manageable. It is also less at risk for contaminants due to its non-fluid cooling mechanism.
Dry-type transformers can have higher operating costs because the maintenance and replacement of damaged components can be costly. Additionally, dry-types have shorter lifespans and lesser recycling possibilities in comparison to oil-types.
Dry-type cooling systems produce more vibration noises than oil-cooled ones.
Typically, dry-type designs can come at hefty sizes, with limited size and voltage capacity. Furthermore, it is more of a risk for overheating during an overload. Such conditions can cause energy inefficiency, maintenance expenses, and demand for storage.
Dry-type designs, however, are easier to store within populated buildings. Being a dry type poses less risk for fire safety as it does not use combustible fluids. Thus, this type of transformer cooling is popular for residential and commercial use.
Oil-type transformers can require extensive and regular maintenance. The oil content needs to be regularly tested to ensure that contaminants are not hindering the machine’s performance.
Oil-type transformers have higher efficiency outputs compared to dry types. Because of the way their cooling works, their core is less at risk for heat damage. Thus, they significantly last longer and reduce the expenditures for frequent damage or replacements. Furthermore, oil-cooled cores have higher chances for recycling and produce less waste.
Oil-type transformers are quieter compared to dry types. This is a significant factor to consider, especially in operating groups of transformers that can cause noise pollution.
Oil-type cooling systems have higher efficiency performance and come in smaller physical sizes. It can handle higher loads and occupy less space. For this reason, most high kVA transformers are inclined to be designed under this cooling system.
The only downside for this cooling type lies in the exact reason for its benefits, which is oil. Oil, if mismanaged, can pose a hazard to fire safety. For that concern, oil-types are commonly placed outdoors or under a separate shelter far from densely populated buildings.
The weight of the transformer is factored into the total pricing calculation. It allows electrical contractors and transformer distributors to pay their costs and make a profit. A 2000 kVA Transformer weighs 4785 kilograms with a 1,025 kg weight of oil.
The power it is expected to carry and the voltage for which it is used determine the cable size. During expansion, the voltage drop that might flow from one end to the other must often be kept within limitations. As a result, cables must be chosen with these factors in mind on both the HV and LV sides.
The capacity of the cable to transport current:
The full load current of a transformer is computed as follows
Kilovolt-Ampere (kVA) is the unit of measurement used to grade transformers. The kVA of the load determines the size of the transformer. In many cases, the load’s power requirements are equivalent to the transformer’s rating stated in VA or kVA. A 1KW (1000 Watt) load, for example, would need a 1kVA transformer with a unity power factor.
Copper Losses are determined by the current that flows through transformer windings. Whereas Iron Losses, Core Losses, and Insulation Losses are determined by voltage.
You can size up a transformer by following the formula for kVA or kilovolts-amper computation. Understanding this formula is necessary, as requirements are often expressed in other units like amperes. Make sure to get the correct given values and refer to the computation method below:
1. Determine the Load Voltage (Volts)
2. Check the load current (Amperes)
3. Then, check line voltage
4. Afterward, verify your use, whether it is single or three phases. Below is the respective formula to refer to:
Single-Phase: Volts x Amps /100 = kVA
Three-Phase: Volts x Amps x 1.732 /100 = kVA
The values you get for kVA are rounded up to the nearest standard manufacturing ratings. Besides, a higher rating than the actual requirement is advisable to handle the current load and possible future additions. You can always consult with your trusted manufacturer or professionals if further verification is necessary.
The continuous expansion and contraction of the steel core inside the transformer causes it to hum. The quantity of flux determines core expansion, determined by the applied voltage and the number of turns in the transformer coils.
The power factor of the input and output supplies is always the same. And the power factor of the input supply does not affect the losses in the transformers.
Transformers are constructed using higher-grade steel (usually Cold Rolled Grain Oriented –CRCO) to decrease core losses.
Electrical transformers significantly influence our everyday lives, especially in creating and delivering electricity to your household appliances. You can improve the efficiency and longevity of your devices by selecting the appropriate transformer. The 2000 kVA Transformer is no different. For more information about transformers, please visit Daelim. Everything there is to know related to transformers, you are likely to find on their website.
This sums up all the things you need to know about 3000 kVA transformers. Selecting the suitable rating of the transformer can be a daunting task. However, making the right choices is a worthwhile investment that can save you from tons of expenses and inconvenience.
Ultimately, the product should come from a reputable brand backed by years of experience and expertise like Daelim. The cost should not compromise the quality of the product. Excellent product quality is just as crucial as picking the correct product itself.
Daelim Belefic is the leading brand of transformer manufacturer in China. With more than 15 years of good reputation, their brand is recognized both domestically and globally. If in search of a quality 3000 kVA transformer or other electrical components, look no further; Daelim has it.
Daelim is your innovative and reliable partner for electrical products and solutions. Contact us today for further inquiries or collaboration.
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