Sankalp Industrial Services

A transformer is a device which helps with the transmission of electrical power, it is a static device without any rotating part and is totally enclosed. So the transformer plays a major role in the electrical distribution so the protection of transformers is an important process. The transformer must be protected from faults in order to do effective power distribution. What are the types of transformer faults 1-Over heating Over-heating is caused due to sustained overloads, short circuits and in case of failure of the cooling system, Overexcitation if a transformer is operated at its maximum potential like high frequency or in high voltage the core will get excited. Protection - Resistance temperature indicator can be used near the winding, Thermal overload and temperature relays can be used. Bridge circuits can be used when the bridge is unbalanced more than the permissible duration circuit breaker trips. 2-Winding faults The winding faults are internal faults, over-heating or mechan...

Overhead power line is an important part of power system.  The cost and life of transmission line primarily depend on the material used for making conductor for transmission line. The most important and much suitable material for conductor of transmission line is copper as it having high conductivity and high tensile strength, More ever it is having good ductility. Only Limitation is its cost. With the discovery of practical mass production methods for aluminum processing, the price of aluminum quickly fell, making it a more affordable choice for manufacturers and designers. It takes an aluminum wire with a diameter 1.5 times that of copper to transmit the same amount of electricity, but that wire will be three times lighter, meaning that aluminum is a more efficient material for electrical applications. High voltage overhead power lines are manufactured from aluminum to reduce weight while supplying good conductivity. Aluminum is having sufficient conductivity. More ever it is lig...

If your electricity bill is unpredictable from month to month or it’s consistently higher than you would like, vampire power may be the culprit. What is Vampire Energy? Vampire power also called phantom power or standby mode, in which appliances consume energy even when they are shut off, can account for up to 20% of your monthly electricity bill. While sitting unused and idle, your TV or toaster oven is sucking money right out of your pocketbook. Why Do Devices Leak Energy? Essentially, every cord that remains plugged into an outlet is still using an electric current. While many devices have sleep or standby modes, they continuously use energy to perform updates, connect to remote servers, and record data. The connectivity of modern technology is one reason why devices leak energy. Even when the TV is off, for example, it’s still ready to receive a signal from the remote to power on at any time. Your DVR is always “lying in wait” until it’s time to record the next show or running behi...

An electrical accident is an undesired, unexpected event that has been caused by an electrical current and has resulted in either injury or property damage. Electrical accidents are more common than you expect. In order to remain safe when using electrical equipment and appliances, it’s worthwhile to familiarise yourself with basic electrical safety knowledge. This will help to minimise the risk of incidents and prevent accidents. Main causes of electrical accidents In a world where we use electrical devices, appliances and equipment in almost all aspects of everyday life, electrical accidents are understandably common. Yet most can be prevented by understanding the dangers. Typically, electrical accidents are caused by contact with water, faulty wiring, attempting to fix electrical devices yourself, naked cords and damaged plugs. So, let’s take a closer look at each of these causes. Water is a conductor of electricity and can, therefore, be extremely dangerous when put into contact w...

Earthing or grounding It is the process of transferring the immediate discharge of electrical energy directly to the Earth with the help of the low-resistance wire. The electrical earthing is carried out by connecting the non-current-carrying part of the equipment or the neutral part of the supply system to the ground. A safety measure devised to prevent people from getting shocked if the insulation inside electrical devices fails is called Earthing. The third pin in the plug is actually the “Earth” or “Ground” connection of the electrical appliance. The Earth, being a good conductor of electricity, acts as a convenient path for the flow of electrons that escape the insulation. Furthermore, the gigantic size of the Earth paves a path for the safe discharge of the electric charge. Why is Earthing/Grounding necessary? There are 3 mains reasons why all electric devices need to be connected to the Earth. Human Safety -  A properly earthed device doesn’t leak out any current. This preve...

Reasons for using Stones in Electrical Switchyard & Transformer Yard: Stones in the substation is provided to reduce the step potential and touch potential when operators work on switch yard. Step and touch potential occurs due to the short circuit current flows on the conductor. All the substation is provided with the good grounding system or low resistance path to the fault current. Therefore to provide the high resistance for foot and ground, the stones are provided. Stones eliminate the growth of small weeds and plants inside the switchyard or transformer yard. It protects the moisture content evaporation and keeps the ground wet. Most in switchyard Power Transformers insulated with the insulation oil. The insulating oil spillages catches fire easily. So Stones/Gravel is provided to protect from fire when oil spillage takes place. Moisture on the floor level get minimised. Compensate the vibration in transformer which has been caused due to magnetostriction in core Improves yar...

When it comes to power regulation, transformers are everything. Step-up and step-down transformers can boost or lower voltages to apply whatever level of power is necessary for a given application. Transformer noise can be a significant problem. Even small amounts can gum up the works and prevent power transformers from working the way they were designed. It is very important to know exactly what transformer noise is, why it causing it and how to prevent it. What Causes the Humming Noise in an Electrical Transformer? There are actually multiple causes of transformer noise. The main one is the Magnetostriction Effect. This is when the current that flows through the transformer’s coils creates a magnetic field. The magnetic field then changes the dimensions of the transformer’s iron core. The core expands and contracts with the alternating current, which causes a humming sound. As the transformer ages, the layers within the core of the transformer begin to break apart and separate from o...