Single-phase Transformer
Why choose us
Our Products
We mainly produce a variety of transformers, including oil-immersed power transformers, dry-type power transformers, oil-immersed three-dimensional coiled transformers, and dry-type three-dimensional coiled transformers. Additionally, we offer mining explosion-proof dry-type transformers, as well as high and low voltage switchgear and other equipment for power transmission and distribution.
Our Company
Jinshan Gate Technology Co., LTD. (referred to as Jinshan Gate) is located at No. 795 Nanming Road, Shuige Industrial Park, Liandu District, Lishui City. Our factory covers 208 acres and employs over 500 people. We hold more than 20 patents and combine advanced domestic and international technologies to become a key player in the transformer industry.
Product Application
Our products are widely used in power and railway sectors. With complete testing equipment and strict quality checks, we ensure that our products are stable and reliable over time. This has made our products highly valued by the power sector and various users. We export to many regions, including Southeast Asia, the Middle East, and Africa.
Our Certificates
Our products have received ISO9001:2008 international quality system certification and have been approved by the National Electrical Product Quality Supervision and Inspection Center. They meet IEC and national standards and have obtained various relevant certifications, including production licenses and national safety marks.
What Is A Single-phase Transformer?
A single-phase transformer operates on single-phase power and has two parts - the magnetic and the electric parts. The magnetic transformer part consists of a magnetic iron core, while the electric part consists of a copper transformer.
Single-phase Transformers
Cost-effective
Single-phase transformers are less expensive and require less material for construction than three-phase transformers, making them a cost-effective option for low-power applications.
Compact
Single-phase transformers are smaller in size and require less space for installation, making them suitable for small-scale applications and installations where space is limited.
Easy to Maintain
Single-phase transformers are simple in design and construction, making them easy to maintain and repair.
Efficient
Single-phase transformers have a high-efficiency rating and provide a reliable power supply with low power loss.
Single-phase transformers consist of two windings—Primary and secondary—Located on a magnetic core made of silicon steel laminations.
The magnetic core is primarily used to create a path for the magnetic flux. Silicon steel is chosen to reduce hysteresis losses, and the laminations help minimize losses caused by localized electrical currents induced in a conductor due to varying magnetic fields.
To insulate the laminations from each other, an enamel coating is applied. There are two main types of single-phase transformer constructions: the core-type transformer and the shell-type transformer.
The core-type transformer comprises two vertical legs, also known as limbs, and two horizontal sections, referred to as yokes. Portions of the primary and secondary windings are placed on both limbs to reduce the effects of leakage flux, forming a cylindrical winding.
The shell-type transformer consists of three limbs in the magnetic circuit. Unlike the core-type transformer, the windings are located in the middle limb, while the other limbs create a low reluctance flux path. The primary and secondary windings are divided into two sections: the low-voltage and high-voltage sections.
The key components of a single phase transformer are:
Core
It is made up of grain-oriented silicon steel laminations to reduce eddy current losses. The core provides a low reluctance path for the magnetic flux.
Primary Winding
It is connected to the source of alternating supply. The number of turns in the primary winding is kept as minimum as possible to reduce copper losses.
Secondary Winding
It is connected to the load. The number of turns is adjusted to get the required output voltage value from the induced EMF.
The following types of transformers are typically constructed to receive and output single-phase AC power:
Audio Transformer
This type removes ground noise from audio signals by supplying the device with magnetic shielding.
Autotransformer
Commonly employed in low-power systems, autotransformers connect circuits with various voltage classes. They consist of only one winding, cannot isolate networks, and are typically lighter, smaller, and cheaper than other types. The voltage supply and electrical load are joined to two taps, with voltages specified by tapping the winding at several points. An autotransformer with a regulated tap is known as a variable transformer or a variac.
Buck-Boost Transformer
This type regulates a voltage rating to meet device specifications and is generally utilized as a circuit isolator.
Constant-Voltage Transformer (CVT)
This transformer creates a relatively constant output voltage despite significant variations in the input voltage.
Constant-Current Transformer (CCT)
Also known as a regulator, this transformer includes a self-regulating secondary section that supplies a consistent output current for any load. It is commonly used in streetlight applications.
Distribution Transformer
This is the pole-mounted device commonly seen that steps down current for light-duty electrical applications.
Flyback Transformer
This type can be used to create a high-voltage output, storing power in its magnetic sections for a short time.
Generator Step-Up Transformer
This transformer steps up the voltage rating to an appropriate level for long-distance transmission.
Harmonic Mitigating Transformer
This transformer utilizes electromagnetic flux cancellation, phase-shifting, and source impedance to reduce harmonic currents in distribution networks, ultimately decreasing the transformer’s operating temperature.
Impedance-Matching Transformer
These transformers reduce signal reflection from electrical power and typically have a 1:1 turn ratio. A common example is a balun, which combines two circuits of mismatched impedance, such as a regulated line of two conductors carrying equal currents in opposite directions connected to an unbalanced path of one conductor carrying the load.
Industrial Control Transformer
These transformers provide power to constant-voltage or constant-current instruments that may be susceptible to changes in the electrical source, such as relays, solenoids, or other electromechanical devices.
Applications Of Single-Phase Transformers In Everyday Life
Household Applications
Voltage Transformation
To ensure maximum performance for home appliances, single-phase transformers play a crucial role in voltage adjustment. They adjust the voltage in refrigerators to meet the specifications of the appliance, preserving effective cooling. Voltage transformation also enhances the cleaning processes of washing machines. These transformers regulate voltage for smooth operation, keeping air conditioners comfortable and using less energy. The use of transformers in these appliances exemplifies their versatility and significance in improving the performance and efficiency of everyday devices.
Battery and Power Supplies
Single-phase transformers are essential for effectively powering electronics and charging devices. Mobile phone chargers use these transformers to adjust the incoming voltage, allowing for efficient battery charging. Laptop adapters also rely on transformers to supply the necessary electricity for smooth operation, as do many other electronic devices, ranging from power tools to portable electronics. This demonstrates how common these devices are in our daily lives.
Lighting Systems
Single-phase transformers are vital in the lighting industry for varying voltage across different types of light sources. These transformers ensure that incandescent bulbs receive the precise voltage levels they need for maximum brightness and longevity. Transformers that adjust voltage to meet the specifications of LED lights are particularly beneficial, as LED lights are known for their energy efficiency. Transformers also play a role in decorative lighting by modifying voltage to enhance appearance without sacrificing performance. This versatility highlights the importance of single-phase transformers in improving the lifetime and efficiency of various lighting systems.
Industrial Applications
Machine Tools
Single-phase transformers are crucial for supplying electricity to various equipment in commercial settings, ensuring their effective operation. Transformers optimize performance in applications such as lathe machines by adjusting voltage to meet the specific needs of the machinery. Similarly, transformers that adjust voltage improve accuracy and reliability in milling machines. They provide the proper voltage levels for industrial motors, essential for numerous operations, enabling smooth and energy-efficient performance. These examples illustrate the vital role single-phase transformers play in powering necessary equipment and enhancing productivity in industrial processes.
Heating Systems
Single-phase transformers are important for heating industrial systems and equipment. They regulate voltage in industrial furnaces, which are essential for operations like metal smelting, providing accurate and controlled heating. Transformers are especially useful in production settings, supplying the voltage required for reliable and effective heating in ovens. They adjust voltage for various heating elements, improving the reliability and efficiency of industrial heating systems.
Control Systems
Single-phase transformers are essential components of industrial control systems, enabling the efficient operation of multiple processes. They provide precise voltage variations that programmable logic controllers (PLCs), crucial to industrial automation, need to operate associated machinery and systems accurately. By enhancing the reliability and efficiency of control systems, transformers facilitate smoother industrial automation. These examples demonstrate the critical role of single-phase transformers in maintaining accuracy and control in industrial processes, driving improvements in automation and productivity.
Power Distribution Systems
Step-up and Step-down Transformers
Transformers are fundamental for electricity distribution, effectively regulating voltage levels. For instance, step-up transformers maximize voltage for long-distance transmission, minimizing energy loss. Conversely, distribution transformers (or step-down transformers) reduce voltage for safe delivery to residences and commercial buildings. These practical applications highlight the importance of transformers in optimizing power flow throughout the system and ensuring reliable and effective electricity distribution.
Renewable Energy Integration
Single-phase transformers play a crucial role in the integration of renewable energy into the grid. For example, transformers in solar inverters adjust fluctuating voltages from solar panels to meet grid standards. Similarly, wind turbine transformers manage fluctuating voltages from turbines. These examples underscore the essential role single-phase transformers play in enabling the smooth integration of renewable energy sources, supporting a diverse and sustainable energy environment.
Railway Electrification
Railway systems and electric trains depend on transformers for power. Traction transformers adjust locomotive voltage for optimal performance, while substation transformers ensure consistent electrification along railway lines. Thus, transformers are vital to railway electrification, contributing not only to energy efficiency but also to the development of sustainable electric transportation networks.
How Do Single Phase Transformers Work?
Just like any other transformer, even single phase transformers comprise of primary and secondary windings that feature insulated wires wound on a single iron core. The primary winding is connected to an AC source, while the secondary winding is connected to the load. The iron core links the flux between both these windings. On energizing, the primary winding produces an electromagnetic field that collapses in the iron core, which in turn induces power at the load. Such magnetic flux (collapse and power build up) occurs six times a second in an AC circuit. By altering the primary and secondary windings, the amount of voltage and amperes between the load and source can be altered. Remember that if the voltage is increased by 2 times, the current in secondary coil will reduce to ½ the value of current in the primary coil.
The single phase transformer refers to the transformer with its primary and secondary winding being single phase winding. Unipolar switching power supply refers to the monopole output, that is, only positive and negative output.
There are two joints on the high-voltage side while three on the low-voltage side. They are: Two input joints on the high-voltage side and three output joints on the low-voltage side.
If it is to supply the low-voltage electricity for civil use (220V lighting and domestic appliances), an earth terminal is necessary. The transformers of three low-voltage output terminals are mostly designed for rural areas where the load is scattered and the power consumption is not too large. Applying symmetrical double output on low-voltage side is beneficial to reduce the loss of lines which is distributed uniformly with the load. Either of the two output ends should be grounded.
The single phase transformer also has connecting groups.
Since the original side of a single-phase transformer is connected by the same magnetic flow, there is a relative polarity relationship. Those who have the same polarity are called dotted ends, while those with different polarity are called synonym ends.
Mark the the primary and secondary winding of dotted ends as head or end (AX、ax) , then the electric potential of the two sides are identical and the connecting group is I/I-12. If the primary and secondary winding of synonym ends are marked as head or end (AX、ax) , the electric potential will be opposite and the connecting group is I/I-6.
10.When Choosing a Single-phase Transformer
Choosing the right single-phase transformer is essential for ensuring the stable operation of electrical devices in a home power system. Here are several key factors and guiding steps to consider:
Determine Voltage Requirements
●Input Voltage: Confirm the input voltage of your home power system (usually 220V or 110V).
●Output Voltage: Determine the output voltage of the transformer based on the voltage requirements of your home appliances. If the appliance requirements differ from the home voltage, select the appropriate transformer.
Calculate Power Requirements
●Total Power Requirements: Calculate the total power requirements of all electrical devices. The power rating of the transformer (usually expressed in VA or kVA) should be greater than or equal to this total to avoid overloading.
●Single Appliance Requirements: If the transformer is intended for a specific appliance, ensure that its rated power exceeds the power requirements of that appliance.
Consider Load Type
●Resistive Loads: Devices such as lights and electric heaters generally have lower transformer requirements.
●Inductive Loads: Devices such as motors and transformers require higher currents during startup. When selecting a transformer, consider its rated current and starting capacity.
Evaluate Efficiency and Losses
●Efficiency: Choose a transformer with high efficiency to minimize energy loss and reduce operating costs.
●Temperature Rise: Ensure the transformer does not overheat under the expected load. Opt for a transformer with a good heat dissipation design.
Check Insulation and Safety
●Insulation Level: Select a transformer with an appropriate insulation level based on the home environment (e.g., humidity, temperature) to ensure safe operation.
●Protective Devices: Check whether the transformer includes overload protection and short-circuit protection functions to enhance system safety.
Consider Size and Installation Location
●Size: Choose a transformer that fits appropriately within your available space.
●Installation Location: Select a dry and well-ventilated location for the transformer to prevent high temperatures or humidity from affecting its operation.
Our Factory
JINSHANMEN TECHNOLOGY CO., LTD(JSM for short) is located at 795 Nanming Road, Shuige Industrial Park, Liandu District, Lishui City. It is a domestic transformer industry production enterprise that integrates domestic and foreign high-tech. The company has advanced production equipment and strong technical strength. Its products have passed the ISO9001:2008 international quality system certification and the National Electrical Product Quality Supervision and Inspection Center, meeting IEC and national standards, as well as obtaining relevant certificates such as production licenses, national safety marks, and explosion-proof certificates.
FAQ
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