AM Transformers Eco News

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.

Ferrite Beads

22nd March 2016

Ferrite Beads

Ferrite Beads MaufacturersA ferrite bead, or ferrite choke, is a simple hollow cylinder or bead that is made of – surprise, surprise – ferrite material. Ferrite is a black semi-magnetic crystalline structure that gives steel and cast iron their magnetic properties and it is a passive electric component that is used to filter and suppress the amount of high frequency electromagnetic interference (EMI) found in electronic circuits. Cylindrical in shape a ferrite bead consists of a mixture of iron oxide and other metals such as manganese, zinc, copper and nickel in various combinations. The material is formed into a hollow cylindrical core and cooked. The resulting core material is easily magnetized and demagnetized and is called a soft ferrite, however, ferrite material is mechanically rigid and brittle and can chip and break if mishandled, so they are encased in rubber or plastic material to protect them and keep the ferrite bead in place.

Also known as blocks, cores, rings, EMI filters, or chokes there are several different kinds of ferrite beads categorized by maximum DC resistance, case size / dimension, rated current, impedance, operating temperature range and packaging type, but the most common sizes for impedance are 120 Ω, 220 Ω, 600 Ω and 1kΩ.
Many ferrites are electrically non-conductive. In these types of ferrites eddy currents do not flow through the material which makes them suitable for use on radio frequencies in transformers, inductors, baluns and loopstick antennas.

How Do Ferrite Beads work?

A ferrite core or bead can be used in two separate ways to improve its ability to block unwanted electromagnetic interference.

In one instance, the ferrite concentrates the magnetic field which increases inductance and therefore reactance. This impedes or ‘filters out’ the noise. In the other instance, the ferrite can produce an additional loss in the form of resistance within the ferrite itself. The ferrite creates an inductor with a very low Q factor. This loss does create some heat within the ferrite, but it is negligible. When the electromagnetic levels are high enough to cause interference, or undesirable effects in sensitive circuits, the energy blocked is typically quite small.

Large ferrite beads are usually found on external cabling but various smaller ferrite beads are used internally in circuits. They are fixed onto conductors or around the pins of small circuit-board components, such as transistors, connectors and integrated circuits. Ferrite beads can be used for the removal of power line noises in cellular phones, PCs, TV tuners, audio players, DVDs, game machines, digital photo frames and several other electronic circuits.

Manufactured to international and UK safety standards, Am Transformers consider their ferrite bead production a speciality, so contact them today to discuss your requirements.

What is an EMI Filter?

8th March 2016

What is an EMI Filter?

EMI stands for Electro Magnetic Interference and an EMI filter is a vital part of any piece of electronic equipment. They are either a separate device or they are embedded into the circuit boards. An EMI filter, is an electronic device used to suppress interference that is present on a signal or power line. They can be used to suppress interference that is generated by the device they are connected to or by other equipment in proximity in order make that device more immune to electromagnetic interference signals present in the environment.
EMI filter

What is electromagnetic interference?

Electro-Magnetic Interference, is defined as unwanted electrical signals and can be in the form of conducted or radiated emissions. It is the interference caused by an electromagnetic disturbance affecting the performance of a device, transmission channel, or system. All integrated circuits are a potential source of EMI. EMI is either conducted – in which there is physical contact between the source and the affected circuits or radiated – which is caused by induction.

This interference can affect the performance of electronic equipment nearby. Equipment such as cordless telephones, home entertainment systems, computers, and certain medical devices can fail to work properly in the presence of strong electromagnetic fields.
Problems with EMI can be reduced by ensuring that components such as EMI filters are installed. EMI filters can suppress any interference that is generated by the device or by other equipment in order to make a device more immune to electromagnetic interference signals present in the environment.

Why do we need EMI Filters?

There are regulatory standards in most countries that limit the amount of high frequency electromagnetic interference that can be emitted by a device and EMI filters function to help maintain or reduce this level.

In addition to assisting to meet EMI regulations, the filter also has to meet a number of safety standards to reduce the risk of fire and electrical shock. AM Transformers have over 20 years’ experience in the industry and you can be certain that our products meet all standards.
There are many different kinds of EMI filters. At AM Transformers we supply custom and standard common mode EMI line filters which are designed to prevent noise emission in switching power supplies at input and to prevent high-frequency noise in communications equipment such as facsimiles, etc.

Contact us today.

Voltage Stabilizers

13th January 2016

What are Voltage Stabilizers?

Simply put, voltage stabilizers are electrical appliances used to feed a constant voltage current to electrical gadgets like ACs and computers. They are an effective way to avoid voltage fluctuation issues from wreaking havoc on your electrical equipment.

Why do we need Voltage Stabilizers?

Voltage Stabilizers Electrical AppliancesIn a world where the use of electronic equipment is second nature, line voltage stabilizers are becoming an ever increasing necessity to most households in order to keep a near constant voltage supply for the efficient operation of your electrical goods. Even though you may not be currently experiencing the negative effects of voltage variations, it does not mean that your unit is free from issues. Your supply may be full of variations, it’s just that there hasn’t been one serious enough to trigger a shut down – yet!

Most pieces of electrical equipment require a constant voltage supply of 400V to run efficiently. Higher voltages may not cause a failure per se, but it can lessen the durability of the product considerably. Light bulbs for example are able to consume up to 40% more power at high voltage but they will last for a mere 10% of their normal life.
Having a voltage stabilizer will ensure that your electrical equipment is performing at its best and does not get overloaded by any voltage spikes in the system.

How do Voltage stabilizers work?

Voltage stabilizers work on the principle of a transformer, where the input current is connected to primary windings and the output is received from secondary windings. When there is a drop in the incoming voltage, it activates electromagnetic relays which add to more number of turns in the secondary winding giving a higher voltage which will compensate for the loss in output voltage. When there is rise in the incoming voltage, the reverse happens, and, thus, the voltage at the output side is always almost unchanged.
AM Transformers voltage stabilizers are designed to accept a wide range of input voltage but maintain a specified output voltage to within +/- 1.0% for both three phase and single phase supply.
If you have any questions please contact our team of friendly, enthusiasts who have been in the industry for many years and they will be happy to help you

PCB Mounting Transformers

7th January 2016

A surface PCB mounting transformer is specifically designed to work on a printed circuit board.

They are compact, they are reliable and they are long lasting – so long as they are treated properly. The first printed circuit boards that most users would probably have seen had wires on them, with the components sticking through the printed circuit board and more often than not being connected underneath it via wires.

As technology has advanced over the years, the way they are constructed has changed many times. The technological leaps of the past decade have seen the complexity of the circuits that are able to be fitted on a printed circuit board increasing tremendously. Because they have no pins or other components that penetrate through the printed circuit board itself they can be designed to a much more compact spec which is one of the reasons they have become the preferred way to affix any type of an electronic component to a printed circuit board in recent years and now surface mounted components have become the norm.

PCB mounted transformers are generally found somewhere above the surface of the circuit board, providing whatever voltage transformation or current transformation that may be required. They do not have sophisticated cooling mechanisms, so they tend to come with a rating for the maximum and minimum temperatures at which they should be run. So long as you keep between these ranges your printed circuit board PCB mounting transformer should last for many decades.

These PCB mounting transformers come in a variety of different capacities and sizes, ensuring that there are enough options for just about any imaginable product. Mounted PCB transformers tend to be inexpensive parts, which helps make printed circuit boards even more economically viable as a means to produce electronic components. Used in a variety of different applications, PCB transformers can step the voltage down to a safe level which makes them indispensable. Constructed on high quality double section metric bobbins designed to meet international standards, our PCB mounted transformers are fitted with modern pin terminals for a level of reliability you can trust.

With next day delivery and a bespoke service that offers our customers the ability to design to order for their specifications as well as those manufactured to designs and specifications that meet the insulation requirements visit us today for your PCB mounting transformer.

How to save electricity & reduce base cost with custom transformers

8th October 2015

Save electricity through strategic planning  What is 3 phase power?

3 phase power is harnessed by most electrical grids worldwide for electric generation, transmission and distribution. By carrying 3 alternating currents of the same frequency and voltage (each phase synced to reach its peak at one third of a cycle), 3 phase power provides consistent power delivery which is highly efficient and subsequently hugely economical.

This is largely attributed to the reduction of energy loss during transmission.

The same cost benefits of using 3 phase electricity to control energy loss and achieve voltage optimisation can be leveraged in industrial and commercial applications, through the installation of step up and step down transformers. Such electrical devices convert a high energy supply into a lower energy supply or vice versa.

This gives industrial users the flexibility to vary power delivery, ensuring large equipment such as motors (compatible with three phase power) run on optimum performance and greater energy efficiency. This is especially applicable for industries who rely on heavy duty equipment with high energy consumptions to sustain their business processes. The strategic use of 3 phase transformers can also support energy management systems, introducing an effective cost control measure.

This is because with the right three phase transformer connections, you can minimise energy wastage and sustain consistent power delivery of optimised voltage.  This control mechanism helps save electricity whilst helping to preserve the integrity of your machines to enable longevity.  

With rising energy bills this can be a critical factor in helping you drive down your base cost.    Made to order custom transformers may be the solution for businesses with specialist needs whilst other businesses may simply require standard electrical transformers to step down or step up voltage. Either way, all our transformers are manufactured to UK and international safety standards and are available with fast delivery. With over 20 years experience, our products help businesses across many industries, operating in both the public and private sectors, get the most out of their energy supply.

Talk to our technical department today to see how we can help your business become more energy efficient.  Call us on 01494 524396 or enquire online today!

Industrial energy efficiency: innovative power saving solutions

17th September 2015
Planning a greener business

Planning a greener business

25% of the UK’s total CO2 emissions are produced by industry, with electricity making up half of the main energy used.

With many industries relying heavily on energy intensive equipment such as motors and lighting in their business processes, high energy consumption can appear an unavoidable cost of business.

This is not the case. By leveraging power saving technologies such as voltage optimisation devices and energy efficiency components; it is possible to significantly reduce the amount of energy required to power industrial processes.

This means manufacturers wanting to take action to reduce energy consumption, businesses looking to design and implement an energy management system, or companies simply looking to boost their green credentials, can all take steps towards better energy efficiency and a reduced carbon footprint.

For proven and reliable methods of reducing your power consumption, we recommend starting with power optimisation devices such as three phase transformers or single phase transformers which can be used in public, commercial and industrial sectors and have been proven to save up to 20% on energy bills.

Our A.M. Transformers team have in excess of 20 years of experience in the electrical transformer industry and have a proven track record of collaborating with the industry sectors to deliver high energy savings. Through identifying opportunities to incorporate power saving devices into your business processes, we aim support greener practices that are good for both your business and the environment.

With an in-depth knowledge of high energy flows and voltage optimization technology, we are able to provide expert technical support and can manufacture virtually any size of single or 3 phase transformer. This ensures you purchase the best product for your application, so you can benefit from instant savings and continue to save far into the future.

If you are looking to reduce your energy consumption, our technical department will be happy to advise you on the best transformer type to fulfill your business requirements.  Call us on 01494 524396 or enquire online today!

How to Avoid Over Voltage and Prolong Equipment Lifetime

21st August 2015

Maintenance of large electrical equipment in buildings is essential for safety but is also needed to review economical and energy efficiency.

Breakdown or electoral faults with large equipment can disrupt business operations, causing safety hazards and may have costly implications.

Installing high-efficiency electrical transformers for heavy load equipment on continuous duty is one reliable method of reducing energy consumption and achieving greater economical results, whilst helping preserve the integrity of your equipment. This could significantly improve the life expectancy of electronic equipment.

But how?

Let’s start with voltage…

As a result of European Harmonisation in 1995, the declared electricity supply in the UK is now 230V with a tolerance of +10% to -10%.

Most electrical equipment manufactured for the UK is rated at 220V but may operate satisfactorily at voltages down to 200V. As the average voltage supplied from the national grid in mainland UK is 242V, without voltage optimisation technology to step down the voltage, over – voltage can occur.

This is when voltage, higher than the equipment is designed to operate on, is supplied. Sub-sequentially energy consumption goes up with no improvement in performance or economical benefit.  In fact over voltage be a large contributing factor to the reduction in equipment lifetime.

According to the 17th edition of the Electricians Guide BS7671, “A 230V rated lamp used at 240 has will achieve only 55% of its rated life”. By efficiently bringing supply voltages to the lower end of the statutory voltage range, you could yield average energy savings of around 13%. This is also a great step towards prolonging the life of the connected equipment.

Voltage optimisation technology

Where there is a national problem of over voltage, Voltage Optimization / Voltage Power Optimisation is a particularly effective means of saving energy and money in the UK, for both industrial users and domestic energy consumers.

Once again according to the Electricians Guide BS7671,  “A 230V linear appliance used on a 240V supply will take 4.3% more current and will consume almost 9% more energy.”

In industries using high energy loads for arduous equipment, three phase transformers are commonly used for 3 phase power supply systems, to step up or step down voltage. These energy saving devices ensure equipment is supplied with the lower end of the statutory voltage range to enable optimal performance with maximum energy efficiency.

Where 3 phase transformer are primarily used to step up or down voltage, Transformers voltage stabilizers are an effective solution to voltage fluctuation problems, as they are designed to accept a wide range of input voltage but maintain a specified output voltage to within +/- 1.0%. Voltage stabilisers can also be designed for three phase and single phase supply.

As a specialist UK Transformer Manufacturer and supplier of Mains Transformers and AC/DC Power Adaptors, we supply literally hundreds of thousands of wound components. Providing a high degree of technical support, including specialist power supply sub-assembly services, we can design and manufacture virtually any size Summer of single or 3 phase transformer or recommend the right voltage optimisation Why device for your requirement.

For advice on improving your energy efficiency, why not give our experts a call today on 01494 524 396 or click here to enquire online.