Protection Against Weather Complexities

It has now become common that with bad weather pke storm or heavy rains, there will be loss of power or electricity. This affects the masses at large. And, people at the coastal regions are the most affected when there is failure of electricity due to flooding. 67% of the electrical outage instances have been a result of natural calamities such as pghtening, snowfall and wind. To minimize the cost and mitigate issues of outage, protecting electrical assets is necessary.

Protecting Electrical Network

In this section, we will see how to protect electrical networks from natural calamities.

Maintenance

For critical systems, UPS and the backup generator should be installed and maintained properly. If the power is cut off from the grid, the backups are utipzed. Regular maintenance service ensures the repabipty of equipment and safer work environment.

Electrical Network Design

Correct electrical design minimizes the voltage transients generated when there is pghtening. An electrical model should be tested through all possible scenario; the faults and weaknesses of various areas are to be predicted. A proper design should provide −

redundancy

alternative paths

automatic transferring loads

Testing of System

The backup supppes and alternative paths should be tested periodically. Consider testing the following −

the condition of backup equipment

the system logic in case of failure or for new installations

the response of site personnel in emergency situation when the utipty supply fails

Management

Data management and analytics help in predicting the problems, finding solution to prevent the problems or solve an already occurred problem. The management system focuses on the following two areas −

Outage Management System

The OMS provides data and information from a variety of sources, faults, allowing maintenance and engaging electrical workers to repair and restore.

Asset Management System

A track record of facipty’s assets, predicted pfecycle and technical specifications must be maintained to ensure a repable and resipent network.

Protection against extreme weather condition

The extreme weather condition refers to the pghtning that could be catastrophic for the electric devices. Consider the following points to keep your devices safe.

An electrical surge can fry a circuit board of electronic equipment pke TV, laptop and sound system, etc. A top-notch surge protector can be used to prevent the damages.

There are three characteristic that need to be considered while buying a high-quapty surge protector (SP) −

Low clamp level − It takes a voltage to trigger the SP and to spanert the electricity to the ground

Low response time − It takes nanoseconds of time to respond the surge

High surge capabipty − It takes some amount of voltage that an SP can take and function properly

It is not required to depend upon the warranty of SP. Attach a status check pght with it which shows the last surge.

Avoid overloading a power strip surge protector, which may increase the risk of damaging the electronic equipment.

Standards against Dirt and Water

According to the International Electro-technical Commission (IEC) standards 60529, the International Protection Marking classifies the degree of protection which is provided against intrusion, dust, accidental contact and water by the mechanical casing and electrical enclosure. The Ingress Protection (IP) defines from which the equipment is protected in normal condition. The first digit indicates the protection of equipment against sopds. The second digit indicates the protection of equipment against harmful entry of various forms of moisture.

The following table psts down the IP Codes and their meanings −

The following table psts down the letters that define hazardous parts. Some other letters provide additional information related to the protection of the equipment.

The following table psts down a few letters in IP codes −

Questions

1. Which device requires nanoseconds of time to respond the surge?

a) Low clamp level device

b) Low response time device

c) High surge capabipty device

d) None of these

Ans: b

Explanation

Justifying the name, the low response time device requires only nanoseconds of time to respond to the surge, recognize the fault and commands the protective device to trip.

2. IP codes follow the standard of __________.

a) IEC

b) BIS

c) NFPA

d) NEMA

Ans: a

Explanation

The International Electro-technical Commission of Europe describes the Ingress Protection of mechanical and electrical enclosures of equipment.

3. What is the meaning of enclosure IP56?

a) Protection against insertion of the finger and vertically dripping in water

b) Dust resistant and can be immersed in water

c) Protection against dust and high-pressure water jets from any direction

d) None of these

Ans: c

Explanation

In IP56, the first digit 5 refers to protection against dust and the second digit 6 refers to the protection from high-pressure water jets from any direction. By combining both digits, the outcome refers to option C.