AM Transformers Blog

How Does Electricity Get To My Home?

7th April 2017

Electricity is a fascinating invention. If it wasn’t for electricity major feat in humanity may never have been achieved. Our daily lives are constantly affected by this fantastic invention and we will forever owe the person who discovered it.

I hear you ask now ‘who created electricity’. The history of electricity dates back to 2750 BCE where the ancient Egyptians were aware of ‘shocks’ from ‘Electric Fish’ which was aptly named ‘The Thunderer of the Nile’.

Benjamin Franklin was really the pioneer of electricity being discovered and then created. We’ve all heard of Franklin’s famous ‘Kite Experiment’ in which he flew a kite in the sky to prove electricity existed in the form of lightning. Indeed the lightning struck the kite and as Franklin had attached a metal key to the end of the kite the electricity was able to flow to it. Thus giving him a big shock! This was in 1752.

Scientists then studied electricity and its forms for hundreds of years, many people pioneering new projects that thrived off electricity. Thomas Edison creating the first light bulb in 1879.

How Is Electricity Created?

The creation of electricity is no mean feat at all. It requires control and a very high attention to detail. The slightest mishap could result in disaster. The main way to create electricity is through the burning of fossil fuels. The result of this is steam. This steam powers a huge turbine which then spins a huge magnet inside of a copper wire coil. Creating heat energy.

This heat energy converts to mechanical energy which then converts to electrical energy through the use of a generator. Now they have this energy ready they have to now distribute it in a controlled and safe way. It now flows from the power plant through rather large and lengthy power lines. The way it does this is through the use of a transformer. It raises the pressure of the electricity so it can flow quickly through the power lines. At its highest it can reach 756,000 volts(this is extremely high and would reduce any thing in it’s path to dust).

The next step is a substation. These are the small gated stations that contain smaller transformers which step down the voltage to between 2000 – 13,000 dependent on the distribution area. This electricity is then ready to be sent to your home and light up your house, power your tv’s and charge your phones. It is sent underground as this is the safest way of distribution – entering a transformer box which now converts the electricity to in the region of 120 and 240 volts. This is still quite high and will hurt when passing through your body. From here the electricity is distributed through a meter which records your uses and sends information to the provider. Thus you receiving a bill every quarter. It is then distributed throughout the house to lights, appliances, sockets etc.

Below you’ll see a diagram showing the simplified process.

Tips for Installing Transformers

21st December 2016

Transformer InstallationTaking safety precautions and following best practices is critical when installing a transformer onsite. It all begins with purchasing high quality products. Ensure that you partner with reliable single or 3 phase transformer manufacturers that adhere to strict quality standards.

Here are some more tips to ensure that your transformer gets installed smoothly and gives you several years of service.

Strictly Adhere to Manufacturer Guidelines

A transformer can be installed in several ways, depending on the purpose. For example, you may want to install it at ground level; on a concrete pad; or outside, inside or on top of a facility. You need to be aware of, and implement, safety precautions as specified by the manufacturer for each type of installation.

Ground installation, for instance, would require you to study the soil type beforehand to assess its suitability to accommodate the transformer. Installing a transformer without this preliminary study can lead to equipment damage, poor performance, and weak and risky electrical connections.

Similarly, be sure to study the structural strength of the facility if you intend to install the transformer inside the premises. If the facility is in a seismic region, precautionary steps must be taken to ensure that the equipment doesn’t result in loss of life during earthquakes.

Inspect Transformer Immediately after Delivery

Check for obvious damages that could be caused due to transportation or negligent handling. File a complaint with the transportation company if you encounter signs of equipment mishandling. Inform the manufacturer about the damage simultaneously.

After this initial inspection, remove the external cover to examine the unit from inside. Check for damage such as broken parts, and loose connections. Be sure to also check for contaminants like water, dirt and moisture.

If the transformer is not going to be installed immediately, perform another round of the above inspection, just before installation.

Considering the above risks, it is important to choose reputed single and 3 phase transformer manufacturers, dealers and transportation experts.

Check Transformer Sound Level
A power transformer’s core generates sound of at least 120Hz level (think of live music in a disco). In some units, the sound could be way higher.

Depending on the surroundings, the sound may be audible or could go unnoticed. For example, in a quiet room, the sound is more pronounced than in a location with multiple equipments like motors and compressors.

Some applications demand absolute silence in which case a sound-reduction system corresponding to the frequency generated can be installed.

Follow Essential Precautions before Setting the Transformer Live

Ensure that grounding is in place. Grounding eliminates static charges, if any. It also protects against risks such as an accidental contact between transformer winding and its core.

Follow protection requirements specified by the manufacturer if aluminium conductors are involved.

Employ only qualified technicians with experience in handling high-voltage equipment to install conductors.

Do not install washers between bus bar and terminal lug. This presents the risk of connection overheating.

Adhere to space requirements specified by manufacturers for installing cables. Do not install them adjacent to coils or blades.

Ensure that there are no breaks or gaps in windings.

Perform an insulation resistance test to assess transformer’s capability to accept applied voltage.

Conduct a final inspection of the transformer before sending it live. Inform all people involved in transformer installation before energizing the unit.

AM Transformers – Your Trusted Partner in Quality Transformers

AM Transformers is known for high quality transformers across the UK. We are single and 3 phase transformer manufacturers and suppliers with over 20 years of industry experience. We deal in transformers of all types, and can supply a quality unit specific to your application. All our products conform to UK and global safety standards.

Single Phase Vs 3 Phase Transformer

16th December 2016

The purpose of a transformer is to convert power voltage to required levels for different applications. Household applications, for example, require low voltage. In this case, transformers convert high voltage to low voltage suitable for powering a television or running a washing machine.

Industries and manufacturing plants demand voltages several times higher than that of domestic applications. Transformers cater to the heavy voltage needs of such commercial applications as well.

Going for reliable single phase or 3 phase transformer suppliers gives you the benefit of a long-lasting device and best value for your money.

Basic Working Principle of a Transformer

An insight into the basic working method of a transformer enables easier understanding of a single- and three-phase transformer.

When current of a variable nature is passed through a wire, it creates a magnetic field in its surrounding area. The strength of the magnetic field is directly proportional to the amount of current flow. The greater the amount of current, the stronger is the magnetic field.

When a second wire is placed adjacent to this magnetic field, current is generated in this wire. The current flowing through the first wire is referred to as primary current while the one generated in the second is known as secondary current.

Since current in the second wire is induced by a magnetic field created by the first, this whole process is termed electromagnetic induction. For more efficient production of current, coils of wire wound around a “core” (an iron bar) are used.

A transformer features such coils to deliver the desired voltage. It uses the number of turns in the coil for voltage conversion. If the number of turns in the second coil is greater or lesser than that in the first coil, the current and voltage in the second coil vary accordingly.

As this process calls for the current to have a variable nature, only Alternating Current (AC) is used with transformers.

What are Single Phase Transformers?

In a single phase transformer, a single pair of coil is used. There is one primary coil and one secondary coil to produce desired voltage. A single phase transformer is a step-down transformer, which means it converts high voltage into low voltage. It is typically used for residential requirements, and office set ups.

Single phase transformers are preferred for domestic and lighter commercial purposes for two key reasons – low cost and lower electrical energy input requirement.

What are 3 Phase Transformers?

3 Phase TransformerWell-known for their efficiency to cater to heavy-duty applications, three phase transformers employ 3 coils, each separated from the other by an angular difference of 1200, to generate the required voltage.

3 phase transformers are highly preferred for heavy industrial applications. Industrial equipment functions smoothly as these transformers have the ability to transmit the necessary voltage over long distances with only a small conductor. It is also possible to incorporate a single phase within a 3 phase transformer, employing any one of the 3 phases.

Original products from reputed 3 phase transformer suppliers deliver multiple benefits including compactness, greater power generation efficiency, and cost-efficiency. The more compact a transformer, the easier the installation and transportation, which further results in substantial cost savings.

Experience True Quality with AM Transformers

AM Transformers are a trusted single and 3 phase transformer suppliers across UK for over 20 years. We build and supply quality transformers that strictly adhere to UK safety standards. We can deliver any type of transformer specific to your purpose. We have an expert technical support team to guide you with the products, before and after sales.

Transformer Installation

18th November 2016

You need to power a new office. Or you want to install a new transformer to replace your earlier one. Think Etal Transformers and you will not have to worry about installing transformers ever again. Here are some transformer installation essentials you must be aware about.

Why You Need Transformers?

The AC (Alternating Current) system requires voltage to be raised or lowered throughout the power supply system to make it safe and efficient. Transformers are needed just for this purpose.

How Transformers Work?

Any transformer consists of two sets of coils or windings. Each set of winding is called an inductor. The AC voltage is applied to one of the windings, called the primary winding. The secondary winding is the other set of coils that is located in close vicinity to the primary winding but is electrically isolated from it.

The AC flowing through the primary winding establishes a time-varying magnetic flux and some of this links to the secondary winding. This process induces a voltage across the second winding.

Transformer Types

There are three main types of transformers depending upon their construction and usage. They are three-phase transformers, auto transformers and special transformers.

Which Transformer Is Best For You?

For a new office that needs lighting, a receptacle for the coffeepot and the computer terminal, you will need a 3kVa transformer. This means a 277V single-phase to 120 V, 2 wire transformer is required.

Connecting the Basics

Before you start any installation, refer to the supplier’s instructions. A better idea will be to call the professional installation experts. Since most connections of the transformers, including Etal transformers are application-specific, it is important to understand the basics before energizing any connection.

Inside the junction box, there are two connections “H” and “X”. The “H” connections denote the higher-voltage windings of the transformer and the “X” connections are the lower-voltage windings.

The model also has two 21/2% FCBN taps to help maintain the 120V. You can add insulating materials such as caps or splicing tape to the pigtail leads that splice into wiring from the raceways with the help of ring-terminal crimp lugs and machine screws.

It is recommended that you install a 10A dual-element fuse in a spare single-pole switch in 480Y/277V lighting panel on the opposite wall of the premises. In order to minimize voltage drop, it is also recommended that you install the transformer nearest the load end of the circuit.

Additional transformers

Sometimes for a packaging assembly, additional transformers are required. Connections to this type of transformer are usually basic-three wires that are connected into the high side (H1, H2, H3) and three wires to the low side (X1, X2 and X3)

Equipment Grounding

Another important factor you must consider is provision of equipment grounding. Talk to your Etal transformers supplier about the right location of setting up the equipment grounding.

Call the Professionals

Installing a transformer is no child’s play. It requires a high level of expertise and experience. More than that, the installation also needs some study and research into the requirements.

Before you install a transformer for your office or warehouse, you need to study the exact requirement, usage and of course power capacity. For doing this kind of study, it is always better to call professional transformer suppliers and technicians.

After a feasibility and requirement analysis, the expert technicians can guide you well about the entire installation process. If high-end technical jargon is not really understood by you, you should always get all your doubts clarified from the installation services team.

Your transformer supplier will also help you with after sales services for the transformer as and when required.

Top 10 Voltage Optimisation Tips

18th October 2016

Energy costs are rising rapidly. On one hand, is the need to manage resources well for optimum utilisation and on the other hand, we also need to follow the government’s directives regarding carbon reduction. Power management and energy efficiency are almost required on a daily basis from building owners and operators. Voltage optimisation is your best bet in such a situation.

Understanding voltage optimisation

Before you discuss how to use optimisers, you need to understand why you need voltage optimisation in the first place. Energy efficiency can be gained not just by utilising available power suitably but also by making sure the energy is distributed properly. 

Voltage optimisation is, therefore, an unobtrusive yet highly effective way for achieving energy efficiency. Here are top 10 voltage optimisation tips.

Design and Analysis

Not all applications are suitable to technology. Before you set up your site, it is important to consider what applications you will be using and how power will be needed and supplied to them.

Your voltage optimisation provider will conduct a survey to determine energy audits, voltage logging, network analysis and full voltage to understand how voltage optimisation can benefit you.

Choose a Reputable Voltage Optimisation Supplier

Even as you start working on adopting voltage optimisation methods and determine which voltage optimisers to buy, you need to make sure that you have a supplier whose credentials are worthy and give you only quality products. Choose performance and quality over price. 

It is important to choose a supplier who not just gives you the best offer for your applications, but also gives you complete energy management solutions. Your supplier must be able to provide excellent service, maintenance and consultancy whenever required.

Assess the Electricity Costs

Before you install voltage optimisers, it is a good idea to assess the electricity costs including installation, consumption, carbon emission savings, potential maintenance and savings. Re-evaluating and re-negotiating your energy bills with your service provider can be a good thing to do at this point.

Measure Operational Benefits

Before you implement voltage optimisation, it is necessary to apply IPMVP principals and measure the operational benefits of voltage optimisation for your project or building. IPMVP or International Performance Measurement & Verification Process conforms to international standards and is used for studying energy efficiency projects.

Always Calculate Total Costs

It is important to consider the total costs for voltage optimisation including material, installation, services required and commissioning before the purchase. You also need to include maintenance and servicing. Operational fees as well as disposal earnings need to be considered.

Consider Combining with Other Energy Saving Measures

You can consider energy saving measures by using alternative energy sources in combination with using voltage optimisers. Research the industry and other similar buildings and services and you could get to save a lot of money and energy.

Consider Location

The location for the voltage optimisers in your building or work premises can actually save a lot of money for you. Your system designer or local electrical contractor can help you to decide where you must do the installation.

Use a Voltage Optimisation Calculator

It is possible to find out how you can maximize your savings and achieve energy efficiency at the same time. Use an online voltage optimization calculator to work out your costs.

Invest in Monitoring Solutions

A comprehensive monitoring solution can tell you where, when and how energy is being consumed within a project or building. You can plan the energy use accordingly.

Regular Voltage Optimiser Maintenance 

Finally, you need to make sure your voltage optimisation supplier is someone who will give you regular and up-to-date service and maintenance for your voltage optimisers.

Most Common Types of Power Transformers

18th October 2016

A Look at Transformer Manufacturing Process

The transformer manufacturing process is a complex one. It involves many stages and many components. Also, there are various types of transformers ranging from Three phase transformers, chassis mounted transformers to auto-transformers and step-down transformers, depending upon the requirement. Here is a look at the transformer manufacturing process.

The most common types of power transformers include GSU (Generator Set-up), Auto-Transformers and Step-down Transformers. Each of these types has variations depending upon power capacity.

Manufacturing Process in a Nutshell

The transformer manufacturing process is a step-by-step process that involves important stages. They are 

  • Core Construction
  • Insulation
  • Windings
  • Core and coil
  • Processing
  • Tanks
  • Testing
  • Core Construction

Core dimensions for the transformer are determined. Core stacking takes place which is then followed by core cutting process. The uncut slit rolls of steel or pre-cut rolls of steel are stacked and cut according to the core design. 

The core is fully metered and step lapped in corner joints to improve flux distribution and to minimize loss and sound levels. The circular core shape is meant to provide windings with optimum radial support.

Core stacking follows with the help of temporary bolt guides. Single and three phase units require 2,3,4 and 5 leg cores. Oil ducts are used to control rise in temperature. Temporary, permanent or combination of banding is introduced at this stage.

Coil Winding Transformers

The coil winding room is usually a separate area located away from other manufacturing areas. Positive pressure is used to work the horizontal or vertical winding mandrels. The conductor used is either copper magnetic wire or continuously transposed conductor. Circular concentric windings are usually preferred for most transformers. The winding type is chosen according to voltage and application. The most common types are helical, interleaved disc, continuous disc and others.

Transformer Insulation

The insulation area is also separate from the other manufacturing areas for chassis mounted transformers as well as other transformers. The winding insulation cylinders and spacers are made from high density pressboard. Coil sizing force is first applied to check and adjust the winding height. Complete winding insulation packages are introduced at this stage.

Coil and Core Assembly Transformers

Coil assembly starts by taking into account the winding type, conductor type and the insulation components.

The exposed edges of the core are bonded together with low viscosity, high strength epoxy resin. This adhesive penetrates and bonds the laminations. Prefabricated oil is placed on the bottom clamps to clamp insulation into place.

The coils are lowered over the core. The top coil clamps the insulation after which the top clamps are fixed into place. The top core is then inserted to form the final base structure.

The lead braising process takes place. The windings are clamped with external or internal tie rods. This provides them with additional support for axial forces. The leads and busbars are given additional support so they can withstand forces that arise from shipping and short circuits. The assembly is then moved on air cushions.

Lead Connection and Vapour Phase

Lead connections are then completed and the assembly goes on to the next stage involving the vapour phase unit. Here the entire core and coil assembly is now dried using a vapour phase cycle technique. 

Tank and Tank Covers

The next process involves grit-blasting the tanks for cleaning, priming and painting the tanks. The insides are usually painted white for better visibility. The tank covers that have been designed with raised flanges to prevent water collection and made from high quality steel plate are cut using an automated waterbed plasma cutter. 

Repacking and Tanking

Final hydraulic clamping is the next stage in the chassis mounted transformers manufacturing process. 

Final Assembly

The final assembly with installation of conservator, radiators, pumps and fans is now completed. The unit is then sent for testing.

 

A Guide to Choosing EMI Line Filters

12th September 2016

An EMI (Electromagnetic Interference) line filter is an electronic device employed to reduce conducted interference in supply lines transmitting signals or power. EMI line filters are used in electronic devices, industrial equipment, household appliances and commercial equipment (such as vending machines), to reduce the effects of EMI on the performance of these devices.

Effects of EMI

Electromagnetic emission occurs due to a variation in the flow of electric current. This variation could be caused by natural occurrences such as fire, lightning, or other atmospheric elements.

Artificial sources of electromagnetic emission include all those equipment and devices that are connected to electricity – equipment that runs on power or manages current flow. Industrial power equipment such as capacitors, inductors, transformers, resistors and semiconductors can be artificial sources of conducted EMI.

Interference occurs when the emission enters unintended electrical paths. 

Conducted electromagnetic interference is one such form of EMI, which affects by inducing electrical noise. Electrical noise travels to the equipment connected to the power supply line experiencing EMI. This interference affects the equipment’s performance and renders it inadequate for its purported application.

Keeping EMI in check is also important for regulatory purposes. This is because EMI is capable of affecting not just the product connected to the affected supply line but the entire power network connected to the product. Your product must conform to regulatory standards of permissible EMI levels to be considered reliable and legitimate.

Benefits of EMI Line Filters

By reducing the EMI effects, EMI line filters help you comply with EMC (Electromagnetic Compliance) standards, and in keeping the performance of your equipment intact. 

EMI line filters find application in two ways. They can be used to control electrical noise generated due to interference within a device, or they can be used to prevent electrical noise generated by other equipment in the vicinity from entering the protected device.

An EMI line filter features a collection of electronic components including capacitors and inductors that achieve the required objective, by forming an L-C circuit. A frequency far higher than that of a normal signal helps an EMI filter identify interference; the inductor part of the filter acts immediately by blocking or displacing the EMI signal.

The capacitor parts of the EMI filter work in tandem with the inductors to block high frequency signals from reaching vulnerable circuits. With all components of an EMI filter working to block any EMI, electrical noise neither enters nor leaves the device using the filter.

Key Parameters to Consider when Buying an EMI Filter

  • Operative Frequency – Operative frequency of the EMI filter is an important parameter. EMI filters that work for a wide range of frequencies are always better. 
  • Operating Current – The type of current (AC or DC) to be used for the application in which the EMI filter is to be used.
  • Rated Voltage – This parameter refers to the maximum permissible line voltage that can be used on the EMI line filter.
  • Rated Current – This is the maximum permissible current that can be passed to the EMI filter.
  • Leakage Current – Measured in milliamperes (mA), leakage current is the amount of current that travels from the filter’s ground terminal when connected to an AC power source. EMI filter with a high leakage current value needs proper grounding or it can cause an electric shock.
  • Operating Temperature – The permissible range of ambient temperature at which the EMI filter can be operated.
  • Operating Humidity – The permissible range of ambient humidity at which the EMI filter can be operated.

Trust AM Transformers for Quality EMI Line Filters

At AM Transformers, we supply EMI line filters of custom-make as well as regular common mode type. We have been in the transformer industry for more than 20 years, and have been catering to businesses across the UK. We are reputed for our quality products and reliable customer support.

What are Inductors?

25th August 2016

An inductor is a single or multiple loop(s) of wire featuring two terminals. Inductors are used to store electrical energy generated by current passing through the loop(s) of wire. The electrical energy is stored in the form of magnetic energy. Inductors find application in industrial components such as transformers and motors.

Inductors in Transformers

Coupled inductors are used to create inductance-based transformers. Coupled inductors have a common magnetic path. Therefore, a variation in one inductor affects the other. These transformers can be used for power distribution or voltage conversion.

Choosing an inductor with a high operating frequency is beneficial when purchasing inductance-based transformers. A magnetic field is created when variations occur in the current passing through the inductor coil. So, a higher frequency denotes faster variations in passing current, which delivers a high-performing transformer.

Inductors in Motors

Induction motors are extensively used in industrial settings. These motors work by converting the electrical energy in the inductors into mechanical energy. The magnetic force generated within the inductor coil is used for energy conversion.

A stater is the fixed component of an induction motor, which receives input current, and uses it to create a rotating magnetic field. This moving magnetic field comes into contact with another motor component – the rotor. The interaction generates current in the rotor, which in turn creates a magnetic field.

As the two magnetic fields (created by the stator and rotor) come into contact, torque is produced, which moves the rotor and accomplishes the task required of the motor.

This design of induction motors prevents the need for electrical contact between stator and rotor. This makes induction motors highly reliable for industrial settings. In addition, there are no components such as brushes in induction motors. This helps increase the life span of the motor. 

Types of Inductors

Inductors can be classified into different types depending on the type of core they are wound around. The core is significant as it contributes to a stronger magnetic field. The magnetic force generated in an inductor with a solid core is greater than that created in an inductor that is simply a wound coil.

Some common types of inductors include:

Ceramic Core Inductors

Also referred to as air core inductors, ceramic core inductors are the most common and are used in applications that require high frequency input and a low inductance output.

The non-magnetic nature of ceramic ensures that the core does not contribute to any increase in permeability. Increase in permeability results in greater resistance to magnetic field formation, which affects inductor performance.

Another beneficial feature is ceramic’s minimal thermal co-efficient of expansion, which refers to the amount of expansion an object undergoes on heating. The low value of ceramic ensures that the inductor gives a steady output over a wide spectrum of operating temperatures.

Toroidal Inductors

Toroidal inductors have a core resembling a ring. The core is usually made of powdered iron or ferrite. These inductors are used in applications that require high inductance output at low frequencies. They are widely used in industrial controls, power supply equipment, power amplifiers, air conditioners, refrigerators and ballasts.

Power Inductors

Iron powder or ferrite core may be used for power inductors. These inductors are common in applications where voltage conversion needs to occur. Power inductors stabilise current flow in circuits that have variable voltage or current.

AM Transformers Fulfils All your nductor Needs

AM Transformers bring to you a range of inductors for all your industrial needs. We deliver custom windings as well. Our inductors comply with safety standards recognised globally as well as in the UK. With over 20 years of experience in supplying wound components to businesses across UK, we have become a trusted name in the transformer industry.

Choosing the Right Transformer for Your Business Needs

2nd August 2016

A transformer is a critical piece of equipment for industrial facilities, manufacturing units and other commercial sectors. The right transformer that meets specific business needs aids in business growth and transforms into an asset.

You will have to consider a several key factors, including the location of installation and performance requirements, when selecting a transformer for your business.
Choosing one without a assessing your requirements could result in waste of money and equipment that stunts your business’ daily output and long-term performance.
How to go about selecting the right transformer for your business? These guidelines could help.

Location
Will the transformer be installed within the facility, a remote location, or in the vicinity of seashore? Different locations demand different specifications for the transformer to perform efficiently.

For example, a transformer to be used outdoors should be able to handle different climatic conditions; such transformers usually come with a liquid used to safeguard the internal winding from outdoor wear and tear.

Similarly, a transformer to be used at a coastal location is susceptible to corrosion caused by the saline conditions. Transformers for such applications usually come with a corrosion-resistant coating.

Be sure to specify the location of installation so we can suggest a design suited to your choice of location.

Functions
Determine how you would want to use the transformer. For example, in an oil and gas facility, a transformer is inevitable for processes such as drilling, extraction, pumping and refining, and for handling other offshore processes.
A transformer may be required for complex heavy-duty applications, or for simple purposes such as powering a facility’s lighting system.

 
Specific Requirements
Do you want a space-optimised transformer for your application? Would you like to have your company logo included in the transformer design? Customisation is possible; simply specify such needs beforehand and we’ll take care of the rest.

Phasing
You can go for a single phase or 3 phase transformer, depending on your application. You need to specify the input and output voltage requirement, and the power rating in volt-ampere, for a single-phase transformer.
A three-phase transformer, common in industrial applications, for powering heavy-duty equipment, needs you to specify wiring configuration. Wiring configuration refers to the desired combination of the 3 windings of a three-phase transformer.

Voltage Requirements
Two voltage specifications – input and output – need to be defined. The input voltage refers to the voltage of the power supply source. Output voltage is the voltage required of a transformer to perform specified application.
While specifying output voltage, it is crucial to consider the highest load requirement of a transformer. This refers to the maximum voltage that a transformer would be required to supply as against the typical voltage supply for predictable applications on a daily basis.
Specifying the maximum load enables the transformer handle sudden unpredictable voltage requirements of an industrial setting without crumbling. This specification adds to a transformer’s durability as well.

Frequency Requirements
The frequency of your source of power supply determines the transformer’s input frequency. If you need a different output frequency, especially if you are using imported equipment, a frequency converter needs to be attached to the transformer’s output.

Safety Criteria
The type of industry, application of the transformer and the environment for which it is purported, often necessitate adherence to certain safety standards. It is crucial to check for such safety standard adherence of the transformer.

Reach AM Transformers for all your Business Applications
With over 20 years of experience in the business of transformers, AM Transformers is a trusted name that businesses reach out to, for their needs. We cater to a wide range of industries in the UK, and are known for our excellent technical and after-sale support.
Our experts are available to respond to inquiries. Place a call and avail the best products for your business.

AMT-Voltage Stabilizers

20th July 2016

A Guide to Choosing Voltage Stabilisers Equipment in commercial settings such as manufacturing facilities and industries need voltage as specified by the manufacturer to perform well. A variation in voltage – low or high supply – can interrupt the functioning of equipment and can even cause damage.

Improper functioning or loss of critical equipment such as industrial refrigerators and computers can turn out to be expensive for your business, for they result in high maintenance costs, process crisis, and even business downturn.

Use of right stabilisers can effectively safeguard your equipment, and ultimately your business, from costly voltage problems.

How does a Voltage Stabiliser Function? This electrical device functions by supplying required voltage to your industrial equipment. It serves as a protective wall between the power supply system and your equipment. A voltage stabiliser monitors for, and recognises, any fluctuations in voltage from the power supply to your equipment.

If there is a fluctuation, the stabiliser employs an inbuilt mechanism (known as tap changer mechanism) to generate the required voltage to be supplied to the equipment connected to it (stabiliser). So how do you choose the right voltage stabiliser? As a buyer, you need to be aware of some factors that are important in choosing the right stabiliser for your equipment.

Do the following before shopping for a stabiliser: Specify Type of Power Supply Does the equipment that requires a stabiliser, run on a single phase power supply or three-phase supply? Specify the power supply system when choosing a stabiliser. This is important because voltage requirements vary for each power supply system. The actual supply voltage in the UK is 230 V for single phase supply, and 415 V for a three phase system. Once you define the power supply system, you get the corresponding voltage supply, based on which suitable stabilisers can be shortlisted.

Determine Total Power of Connected Equipment A voltage stabiliser can be connected to a single equipment, or it can feed multiple units. The power consumed by the equipment or the entire system of equipment, as applicable, must be determined. Equipment label or user manuals give power consumption details. Multiply the power value by the utility voltage (230 V for single phase; 415 V for three-phase), for each equipment. Sum individual power values in case multiple units are to be connected to the stabiliser.

Allow a margin of 20 to 25% to the total power value, to get voltage range for stabiliser. But, in general, go for stabilisers that offer support for a wide fluctuation range. Other Factors to Consider

  • Choose a stabiliser that facilitates wall-mounting. This is crucial to ensure safety of workers within the facility. Installing stabilisers in unsafe places, particularly where there is a risk of exposure to water, can result in electric shock. Wall-mountable stabilisers minimise such risks.
  • Go for stabilisers with time delay feature. This feature helps prevent possible damage to equipment that could result from a spike following a power failure. By delaying power to the equipment by a few minutes, the stabiliser restores balance and prevents damage.
  • Check if the stabiliser has overload protection capability. If stabilisers are loaded beyond their specified voltage capacity, they can break down, or worse, cause fire accidents. This protection feature prevents such occurrence by shutting down the stabiliser output completely in case of an overload.
  • Opt for stabilisers with a clear specified warranty period.

Trust AM Transformers for Quality Stabilisers AM Transformers has been in the business for over 20 years. Our stabilisers for single phase systems feature an input range of 216 – 278V while our three phase counterpart offers 374 – 481V input range. As a leading name in UK in voltage stabilisers, our experts are well-positioned to provide guidance and information regarding stabiliser requirements. Call us to discuss your needs. We promise you the best solution.