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The Need for maintenance?

Transformers are a costly and necessary portion of any machinery. As it is used to minimize power line issues such as electrical noise, spikes, surges, and ground loops, insulation transformers are used. It also offers high resistance to insulation and complete electromagnetic and electrostatic shielding. So, it is best to conduct annual maintenance check ups on your machinery to get maximum efficiency and increase product life.
Nantech Power Systems Pvt. Ltd. which gives the best hardware solution in Chennai city also delivers AMCs (Annual Maintenance Contract) when selling our electrical goods.

Annual Isolation Transformer Maintenance Checklist

• It is important to inspect the air fans, oil pumps, among other things used to cool down a transformer and control circuit annually
• Make sure you use only soft cotton cloth every year to clean all the bushings of your electrical transformer.
• OLTC's oil status should be closely investigated on an annual basis.
• Make sure the interior of all the marshaling boxes is washed out annually. Check the proper functioning of the heaters for room and light. All the control and relay wiring terminal links need to be strengthened at least once a year.
• It is important to clean all control switches, alarms and relays along with their circuits, the Remote Tap Changer Control Panel, and the Relay and Control Panel with an acceptable cleaning agent.
• If they have the requisite oil level, check all the pockets for the Winding Temperature Indicator and Oil Temperature Indicator and make sure to top it up if needed.
• It is important to verify the proper functioning of the Buchholz and Press Release System relays on an annual basis.
• Ensure that the resistive force of the earth connection is determined and that the rizer must be measured with a clamp on the earth resistance meter. This has to be done on an annual basis.
• Replacement of capacitors:

1. Capacitance value changes can result in variations in the output voltage of the CVT-
   It’s expected usual manufacturing tolerances in the value of a spare capacitor to adjust the nominal setting of the original output voltage by less than 1 percent. With CVTs using a spare capacitor of the same color dot, the estimated output voltage difference will be less than 0.3 percent
2. Over extended periods of time, the physical dimensions of commercial capacitors shift-
   Condensers would be comparable in size or smaller in general terms. A factory repair for units up to 3 kVA is recommended in case of any anticipated problem. When handling high voltage capacitor installations, caution must be taken

ALSO READ THIS: What is an Annual Maintenance Contract? And Why Should You Worry About It?

For more maintenance details of an isolation transformer

• CVT (constant voltage transformer) Click here
• Ultra-Isolation transformer Click here

Preventive maintenance can help to detect problems and provides:

• Increasing transformer life through condition monitoring
• Lessen Maintenance Costs
• Safe and reliable operation
• Avoid a sudden breakdown

Conclusion: A famous saying “a stitch in time saves nine” used to express that it is better to spend little time and effort right now to avoid major problems in the future which may lead to cost more money sometimes life too.

Chennai city is leading in the hardware industry. From the past few years, it has advanced alot in hardware technology development. Foremost Nantech Power Systems Pvt Ltd., one of the most important major hardware manufacturing companies that provide top-level transformers.

Constant voltage transformer: -

Constant Voltage Transformer (CVT)is a non-linear transformer also known as Ferro resonant Transformer (Ferro).

Ferro resonance is a regulated voltage output provided by CVT through an electromagnetic phenomenon.

CVTs are basically 1:1 transformer that is excited high on their saturation curves, thereby providing an output voltage which isn’t significantly tormented by input voltage variations. This special characteristic is that the foundation of the appliance of Ferro resonant transformers as power conditioners.

Ultra-Isolation Transformer: -

An Ultra isolation transformer is a transformer that’s accustomed transfer electricpower from a source of alternating current (AC) power to some equipment or device while completely isolating the connected device from the power source, usually for safety.

An isolation transformer is a transformer, usually with symmetrical windings, which is used to decouple two circuits. An isolation transformer allows an alternating current(AC) signal or powers to be taken from one device and lead into another without electrically connecting the two circuits. Isolation transformers block the transmission of direct current (DC) signals from one circuit to another, but allow AC signals to pass through. They also block interference caused by ground loops. Isolation transformers with electrostatic shields are used for power supplies for sensitive equipment like computers, Lab Instruments, CNC Machines, Medical Equipments, etc.

Isolation Transformer employs a novel multiple shielding technique that reduces the inter-winding capacitance to a large extent and increases the DC isolation.

Comparison: - It matters most for you

Chennai is a bustling metropolitan city with many people relying on the clean current to reach them. Transformers are an essential part of this chain of getting power to your buildings, and most transformers these days aren't equipped with the latest technology in the market.
An upgrade to the transformers used these days are isolation transformers. They are just like a regular transformer, but the windings couple through a common iron core. The coils have a turn ratio of N2/N1=1, and this setup helps us a lot in reducing power line problems like surges and spikes, and hence without electrically connecting the two circuits, one can safely pass AC. It provides galvanic isolation, which protects your equipment from electric shocks and suppresses noise in sensitive devices.

With a wide range of products available in the market, one must consider some aspects before purchasing isolation transformers. These are:

Voltage

Since we use transformers to change the primary power supply voltage, we must carefully consider this factor. Even though transformers can accommodate different voltages, the primary power supply voltage will determine the transformer's input voltage. You can then decide the output voltage as per requirements.

Number of Phases

We need to decide whether we have a single-phase or a three-phase requirement and accordingly choose our variant. This will depend on our output requirement. If we transport current to a house, small home, or an apartment building, we shouldn't need more than single-phase power and hence single-phase transformers for the job. Whereas if we are to supply to industries and factories that use heavy loads and heavy-duty equipment, we need a three-phase supply and choose a three-phase transformer.

Load Requirement

This is a factor that deals with the question, "What is the requirement of our load?" For this, we need to consider both the size and the type of load involved. This one should ideally consider along with the previous consideration.

Location

Consider this before you finalize your product for purchase. Where are you going to install the transformer – will it be indoors or outdoors? Depending on this, you have to make sure that your transformer has the necessary physical capabilities to withstand whatever the environment throws at it. That’s not all! Is your transformer going to be installed near any hazardous substances or some other dangerous environment? Ask these questions before you finalize your product's purchase and adjust either your setting or change the product to suit your needs of the installation.

After you consider all of the above factors, you can now get in touch with Nantech, which has all your transformer needs taken care of! With excellent quality products, easy installation, top-notch customer care, and timely after-sales support, you can rest assured of your purchase to be a great one! They have both single and three-phase transformers with ranges from 500-1500 kVA. They have a compact design that can upgrade your current transformer. There are Step-up, Step-down, and K-Rated transformers for you to choose from as well! Please go check them out now, and Happy Shopping!

2020 has been a challenging year. Every individual has been forced to take precautions to prevent the virus from sabotaging them. Whether it was the government or renowned celebrities, they all emphasized one thing, stay safe. Safety is one important component to prevent numerous avoidable accidents, be it road traffic accidents or medical accidents, or even electrical accidents. Electrical accidents are usually curbed by planning circuit with every component engineered so that the whole system is fail-proof. One important component is the use of isolation transformers in this circuit. They provide safety gear to the equipment connected to it thereby rendering the gadget and the user using it free from hazard. Chennai is a major contributory city when it comes to hardware industries. It has the most productive technological advancements, giving us all the more reason to buy our electrical hardware. On its ground is the Nantech power systems Pvt Ltd, a manufacturing company that manufactures the most credible, durable, and top-level isolation transformers.

What Is An Isolation Transformer?

Isolation transformers are transformers that provide galvanic isolation between the powered device and AC power lines such that there is no DC path between the two. They are used to transfer electric power from an alternating current power source to a device, isolating the power source's powered device. This is usually done for safety purposes like to protect against electric shocks, to transmit power between two different circuits which are not supposed to be connected, and is also used to suppress electrical noise in sensitive appliances.

How Does Isolation Transformer Work?

Isolation transformers permit the transmission of signals of the AC component to pass but prohibit the DC signals' transmission to pass through from one signal to the other.

They serve three main purposes:

• Isolation of the secondary from the earth(ground)
• They provide voltage alteration - step up or step down.
• They decrease the electrical noise being transmitted from the primary to the secondary or vice versa.

They are designed in such a way they block the interference caused by ground loops. These transformers have turned in the ratio of 1:1 such that the number of turns in the primary and the secondary windings are equal. However, when the voltage needs to be altered, isolation transformers are used to step up and step down.

What are the uses of Isolation transformers?
The primary uses of isolation transformers are as follows :

• To avoid ground loops.
• Enable safe and precise measurements.
• Protect users from impaired appliances.
• In the separation of one part of the electrical system from the other.
• Can be used to test electronic devices.

What are the specialized applications of isolation transformers?

• Commercial isolation transformers

These are isolation transformers made for a vast number of devices used for commercial purposes.

• Medical isolation transformers

Isolation transformers are designed especially for medical appliances. Medical centers need electronic devices that require high voltages and are sometimes risky to operate. In these cases, the user's safety, the patient, and the device itself should be considered a top priority. Medical isolation transformers fill this gap, act as a gatekeeper, and provide protection.
Other specialized applications and their isolation transformers include – Pulse transformers, Austin transformers, Instrument transformers, etc.

Isolation transformers are not only used for safeguarding our electronic equipments, but they also make working on an AC appliance so much easier. They work in so many ways to help us bring the best out of the devices we use without any interruptions of any sort. Another added advantage is that they are enormously useful for testing power-related devices.