Tag Archives: electrical transformers

Cast Resin Transformers

1st February 2016

Cast Resin Transformers Out Perform Oil Based alternatives

Cast Resin TransformersTransformers are electric equipment that change the voltage and the current of electricity for effective and efficient transmission and distribution. They have a multitude of uses but a good example of their use is in power generation facilities.

Transformers are used to increase the voltage and to decrease the current in order to transport electric energy across transmission lines. When the electricity reaches the end user, transformers are again used to then reduce the voltage and to increase the current in order to make the electricity suitable for general use. This process of transforming voltage generates a lot of heat and therefore transformers must contain effective cooling systems.

It is these cooling systems that differentiate transformers from each other, for example dry type transformers dissipate heat directly into the ambient air and liquid cooled transformers dissipate heat into liquid mediums.

Cast resin power transformers are so called because they use epoxy resin to encase the windings. First developed in the 1960s in Germany as an alternative to oil-filled transformers they are able to withstand temperatures as high as 188 degrees Celsius. Heat passes through the epoxy and dissipates into the surrounding air.

Cast-resin power transformers are self-extinguishing, so guaranteed against fire hazards and require no fire-proof vault for indoor installations; totally insensitive to harsh environments because the epoxy protects the windings from dust and corrosive atmospheres, whether that be pollution or condensation; certified silicone free and because these transformers are dry, without cooling oil they are quick and easy to install with minimum maintenance required.
The applications for cast-resin power transformers are varied – from a wide range of infrastructure, commercial, public and residential developments to stepping down the voltage of electricity from the electric grid to lower levels. While oil-filled transformers are still widely used throughout the world, cast resin transformers are increasing in popularity because they offer better efficiency, less maintenance, higher fire resistance, and are more environmentally friendly due to the lack of cooling liquids which eliminate the possibility of oil leaks.

AM Transformers are a global leader in the field of electrical power equipment and we supply a collection of Cast Resin Power & Distribution Transformers with the choice of both recently manufactured and re-engineered solutions available. Our Cast Resin Transformers are supplied in accordance with internationally recognised standards and are designed to suit your requirements either in IP00 specification or in sheet steel ventilated enclosures complete with HV and LV cable boxes.

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 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.

Three Phase Transformers – the basics

20th July 2015

Be greener with a three phase transformer

Be greener with a three phase transformer

3 phase transformers are commonly used for energy distribution, especially in industrial facilities with когда big equipment – but why?

By carrying 3 alternating currents of the Saving same frequency and voltage, the total amount of power supplied by a 3 phase electric power system remains constant. This is because each phase is synced to reach its peak at in one third of a cycle.

This consistency in power delivery is highly efficient, providing many electrical advantages and making it more economical, as it uses less conductor material and reduces the amount of electrical energy lost to resistance.

Therefore it makes sense to leverage 3 phase power systems in industrial settings that require cheap mlb jerseys high energy loads.

Electrical Transformers

Since three-phase systems are often used for power distribution systems, three-phase transformer devices are commonly used throughout industry to step-up or step-down voltage. This helps to achieve energy efficiency through voltage optimization, whilst ensuring the right voltage is delivered for various electrical equipment and devices.

It is vital the transformer type is compatible with the electrical wholesale nba jerseys supply system – incorrect connection can cheap jerseys from China damage equipment whilst being highly dangerous!

Whilst three phase transformers can be constructed from 3 individual single phase transformers connected together, preassembled 3 phase transformer devices are smaller, lighter and cheaper. This is because the copper and iron are used more Management effectively, mounted into one single device, unlike their modular counterparts.

As 3 phase transformer suppliers, we currently manufacture 3-phase transformers from 50VA up to 2MVA. As Women our aim is to supply high quality, reliable transformers, we can manufacture virtually any size of single or three phase transformer, dependant on voltage, with any type of termination incorporated into the design.

By choosing the right electrical devices for your requirements, you can save money, reduce your energy consumption and protect your equipment.

If you have any special requirements or simply need some guidance on selecting the right electrical devices – why not talk to our technical team?!

You can contact our support service by calling us on 01494 524 396 or click here to enquire online.