Advantages of Hybrid Switchgear : Space Saving : As the number of functions are integrated, the distance between components reduces practically to zero. For the AIS, as we have to maintain the clearances between individual equipments like CB, CT, disconnectors, ground switch etc., the requirement of site space is more. However, in the case of hybrid […]
Power Generation & Distribution
Hybrid Switchgear
Hybrid switchgear is basically a compact switchgear in which the utilities of the AIS is interfaced with GIS. Here AIS stands for Air Insulated Switchgear and GIS stands for Gas Insulated Switchgear. Hybrid switchgear is a condensed switchgear which is mainly used in the renovation and extension of substations with AIS based switchgear where such […]
Step Down Transformer – Working Principle, Equation, Types, Advantages & Disadvantages
Step Down Transformer reduces voltage and hence used in almost all household electrical appliances. Our present day electronics is heavily dependent on it
What is Voltage Stabilizer – Why we need it, How it works, Types and Applications
Applications of Voltage Stabilizers have became a need for every home. Their Different types are available now with advanced functionality and works. The latest advancements in technology like Microprocessor chips and Power Electronic Devices have changed the way we see a Voltage Stabilizer. They are now fully automatic, intelligent and packed with a lot of additional functions.
Disadvantages of Wireless Charging of Mobile Phones and Smart Gadgets
Though having many advantages of Wireless Charging for Smart Gadgets like Mobile Phones, it has its own disadvantages too. Let’s discuss them in detail.
Type of Flywheels – Function, Applications and Advantages
In our previous post we have discussed about Flywheel, its physics, gradual development and its rotor requirements. In this post we will discuss about type of Flywheels, their advantages and practical applications.
How to Choose Battery – Method & Short / Long Term Power Requirements
As discussed in the previous topic “AC Battery”, selection of suitable battery (AC) completely depend on your requirement. Further elaborating this, the various requirements can be broadly classified in two main categories. They are
What is Wireless charging – How it Works in Cellphone Step by Step
What ever advancement Cellphone achieves, Wireless Charging is future. With Wireless charging, step by step method of how it works in Cellphone is explained
Advantages of Wireless Charging of Mobile Phones and Smart Gadgets
Wireless Charging has been very useful for Smart Gadgets like Mobile Phones. In this post we will discuss about various advantages associated with it.
Thermal Battery Technology – Types, Working principle and their applications
Thermal Battery Technology employs inorganic salt electrolytes. The working principle and applications of different types of thermal batteries (Thermocouple and AMTEC) are explained.
Spring as Energy Storage Device – Equation, uses and Disadvantages
We use Spring as Energy Storage Device since ages. Spring Energy Storage Equation, its uses as well as Disadvantages are discussed in this post.
Flywheel as Energy Storage Device, Calculations and Rotor Requirements
Flywheel as energy storage device is an age old concept. Calculation of energy storage in Flywheel and its rotor requirement are discussed.
Molten Salt Battery and Ice Battery
Till now, we discussed Capacitor, Thermal battery, Pneumatic Battery, Springs, Flywheels etc. In this post, we will discuss Molten Salt Battery and Ice Battery. Molten Salt Battery As the name suggests, it contains a high capacity thermal salt. This type of battery absorbs the solar thermal energy and dispense it during night for generation of […]
Why Starter is used ??
You must have noticed that we use a starter to run motors. But have you ever thought why starter is used for running a motor?? Lets dig in to the cause. As we know, the current drawn by a motor armature is given by the relation: Ia=(V-Eb)/Ra In this equation, Eb […]
Three Point Starter
The internal wiring for Three point starter is shown in the fig below. The three terminals of the starter are marked A, F and L. One line is directly connected to point L which is further connected to the starting handle (arm) through the overload release. If motor has to be started, we need to […]
Four Point Starter
Four point starter is connected to a long-shunt compound motor. If we compare it to the generally used 3 point starter, we can easily mark one remarkable difference than its counterpart. In four point starter, the most critical ‘Hold ON coil’ (electromagnet) is placed out of the shunt field circuit. Rather to its place in […]
Series Motor Starter
A face plate/drum type controller is used for starting the series motor. This controller can also be used to control the speed of a series motor as well as to reverse the direction of its rotation. It is commonly known as Series motor starter. As the operator has to monitor the operation of motor continuously, […]
Direct online starter
The most simple and basic type of starter for motors (induction motor) is the Direct Online starter. The Direct on line starter contains an ON/OFF switch and an OLR. Here, OLR stands for overload relay for protection against excessive load current. The selection of switch depends upon the operator’s requirement. Generally, the switch which is […]
Auto Transformer Starter
An Auto transformer starter basically uses an auto-transformer to reduce the voltage applied to a motor during its start. As we know that the starting of big motors which are used for prolonged periods exert large current in the circuit. Due to this, a voltage drop occurs which may damage other electrical equipments which are […]
Star Delta Starter
Star Delta starter comes under the category of starters using reduced voltage method for starting the motor. Just like all other starters, the basic aim to use this starter is to decrease initial high starting current generated by the motor at the starting procedure. It is used for the purpose of limiting the voltage drop […]