Electricity is used in all applications. It is required in all the fields, leaving no substitute in any corner of life! Hence, electricity has to be conserved and optimized. In order to control the flow of current, an electrical device which safeguards all the devices must be used.One such electromagnetic electrical device, also known as an automated switch which turns the current on or off, allowing the required flow to the circuit is known as ‘relay’.
A protective relay is a relay which is adapted for tripping the circuit breaker when the fault is detected in an electric system. The fault may be a short circuit or an abnormal issue, a relay deducts the faults, finds the location and holds/stops the circuit and protects the electrical appliances and devices like generators,transformers etc.Therefore, a relay safeguards and disconnects the devices and appliances during the abnormal flow of current.
In some cases, if you come across an open circuit, wrong setting or a bad contact, the immediate substitute is a backup relay.By clearing the fault in the electric system sooner it reduces the damages and fire accidents and reduces the risk of the life by locating the faulty section.Hence, in short, a relay prevents the damages and secures the electrical devices and makes sure the required flow of current.On the basis of the applicability, relays may be used in the particular field, in meeting the task requirements.
In this blog, we discuss protective relays, its functions, and advantages.
As the name suggests, protective relay, protects the device, after sensing the fault. The fault is sensed, the location of the fault is known and gives the tripping command to the circuit breaker.
Protective relays operate by two principles one is an electromagnetic attraction and another is electromagnetic induction.
Electromagnetic attraction relay works on both AC and DC supply and it attracts the coil towards the poles of an electromagnet. These relays work instantaneously and it doesn't delay. Whereas,
Electromagnetic induction relay works on AC supply only and it uses the induction motor to produce the torque. They are mostly used as directional relays in the power system for the protection and in high-speed switching operation applications.
After knowing the protective relay and its function, let us also know the
Advantages of protective relays
1. Protective relays are fast in operation and fast to reset.
2. They can be used in both AC and DC power supply.
3. They can operate in milliseconds and the result is instantaneous.
4. Their properties are very simple, robust, compact and are most reliable.
5. Protective relays can be used in various fields and serve electrical protection.
If you want to protect your house or workplace from short circuits or any abnormal faults, use / buy protective relays.
Buy a good quality protective relay online, as it saves your lengthy time and effort of offline shopping. If you are looking to buy protective relays online and also to buy thermal overload relays online, visit www.eleczo.com - as it is one of the best electrical online portals in India. We dealers of various kinds of relays such as automatic power factor correction relays, power factor relays, and protective relays. There are protective relays suppliers and power factor relays distributors, online, providing you with the best quality relays.
In an automatic power factor correction relay catalogue, we have exhibited all the products technical specification details and features. We also deal with Prok DV's which is one of the top leading brands of protective relays. They are well-known prok protective relays suppliers and prok protective relays dealers in India supplying reliable and long lasting relays.
For quick purchase and more information on protective relays and other electrical products visit eleczo.com -the best store for electrical wholesale online India.
