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What is Protection Relay and How Do Protection Relays Work?

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For those who not aware, what is protection relay? Simply answer is protection relay is an electrical device which is work as shield guards for electrical power system which is help to protect electrical power system from over voltage, low current & earth fault etc.

Protection relay is electrical device where it receives electrical input and we need to set protection relay device in which form we want output. In protection relay input can be voltage, temperature & resistance. Output can be visual feedback in number of form like indication warning lights, control warning, visual alarm, automatically power turn on & off, an alphanumeric display & communications etc. A following diagram will give you simply answer “what is protection relay”.

Protection relay either can be electromechanical or electronic/microprocessor-based, which have number of advantages for electrical power system like relay showing visual feedback in form of LED light and it also communicate with help of a network or a PLC. The output is used to make control & monitor power system from unbalance or over voltage. Relay continually working to make controlling, monitoring & protect power system.

Protection Relays Work

Protection relay is same like safe jacket, which is save us when we are in bad situation, relay working cycle is also same as life jack for electrical power system.

The purpose of protection relay is to deleting an issueduring its initial stage which can we happen in future. It works on to eliminate that issue or significantly reduce damage to power equipment.

The following stage where relay work on problem or Damage –

Stage 1: During running of electrical equipment, relay going to find first stage of problem or damage like moisture, dry dust, unwanted chemical, persistent overloading & vibration etc. starting monitoring of small problem or damage which can be incurred as a big damage in future. On the time of small problem incurred with equipment so relay is also going to start monitoring & protection work for power system and going to show indicated.

Stage 2:In the second stage damage going to become more severe. Like changes take place such as insulation breakdown, overheating and over current or overvoltage. Since from first stage to second stage change’s become normal changes to abnormal, this goes to create problem in power system. Then protection relay is stared to protect our power equipment from over current or voltage, Overheating etc.

Stage 3: At this stage problem going to create damage in power system, different types of protection relay will help to get protect from damages. Following in list of protection relay –

  • Numerical protection relay.
  • Transformer protection.
  • Differential relay.
  • Over current protection.
  • Substation automation.
  • Motor protection relay.
  • Auxiliary relays.
  • Transformer differential protection.
  • Switchgear protection.
  • Control and relay panel.
  • Feeder protection relay.
  • Self powered relay.
  • Line protection relay.

If we going to change continually circuit breakers, replacing fuses and repairing equipment but we are going to find main reason that creating problem or damage in power equipment then it not going to help us to but relay can work for you to find damage and to make protect from that damage. Read more about protection relays visit here – www.ashidaelectronics.com

A very Passionate and Professional blogger. Writing for hufforbes and The Odyssey Online.I love to research about technology and share my reviews with community. My goal is to provide articles about technology that definitely blow the minds and keep you update of latest trends and future technologies.

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Technology

5 Ways to Spruce up Your Garden

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If you are planning on throwing a party to your friends then a good option is to arrange that party on your backyard lawn. Home gardens are the best places for birthday parties, BBQ dinners, new-year gatherings and many other occasions. For these events, people like to arrange and decorate their lawn in the best possible manner by hiring some event organizer, or a lawn decorator. Now you can beautify your garden using some simple ways and save a handsome amount of money. Apply the following tips and enjoy your parties.

Unusual Plant Containers

Now you don’t have to go out for some plant containers. You can grow plants in some of the useless things in your home and they look really beautiful. Old metal containers, paint buckets, wooden crates, broken drawers and colourful ladies willies are some of the best choices to plant flowers in them. Just fill those with some potting compost and plant geraniums and some California poppies. Your old handbags are a good option to hang them on the fences and lamp posts and arrange some silk flowers in them.

Colourful Lighting

Evening parties look really promising in the lawns if suitable attractive lightning is available too. You can have solar lights available quite easily in a huge variety of colours and designs to arrange them in your lawn over the trees, vines and some short plants, blinking and giving a soothing effect to eyes. Similarly, if you have spare and useless glass jars or wine bottles you can arrange them on the grass along the pavements or pathways adding a small tea light and that’s it. Now you have created a light marked pathway that looks really fascinating especially in the moonlight.

Topiary

Topiary can be a great way to trim your plants and trees of extra weeds, bushes, and shrubs. Definitely, it is a time taking task but will totally become worthy when your guests will admire your garden. There is no need to go for some fancy characters or animals, just try some globes and squares to give them a neat look.

Remove the trash

Always remove or hide the unnecessary things from the garden. This looks so ugly and crappy when your garden is well decorated but then you see a water-hose or a pile of rotten leaves left in the corner. Compost bags, tools, heap of soil, broken furniture bits and pieces, watering can, and wheelie bins are all the unsightly items. Try to remove them or at least hide them behind some sort of structure (like the wheelie bin store pictured) evergreens or tall terracotta plants.

Paint your Fences

Old wooden garden fences look so ugly and shabby when they are worn out. These fences need a little more time and they turn your garden into heaven. Just have some oil-based paint and paint the entire wooden fence, shed or any other woodwork around your garden giving it a totally new and eye-catching look. Try giving a sophisticated and traditional view using some bright colours.

Author bio: Nuur Hasan is a software developer, web developer and a technical writer with more than seven years of experience. He believes that sharing knowledge can do wonders and that is why he likes to blog. His other interests include politics and sports.

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