Electrical arcs can occur when a gas is subjected to a voltage that exceeds its ability to block. When the voltage is strong enough to ionize the air between the conductors, an arc occurs. When ions are added to the air, it becomes an excellent electrical conductor. The ionization of air generates a current that warms and illuminates the air. This heat causes the ionized air to ascend, forming an arch-shaped current. For this reason, the phenomenon is known as an arch current. An arc flash may generate temperatures as high as 20,000 degrees Celsius.
Arc flash hazards may cause damage to both humans and property. Some of the commercial activities of arc flash include:
Stopping electrical components:
It minimizes potential threats as much as possible. Work should not be performed on live equipment, and special caution should be exercised while testing the equipment after it has been de-energized or before it is re-energized. Remote tracking is utilized to keep circuit breakers away from arc flash boundaries, which might threaten the user.
Utilize technologies with less risk:
Arc flash analysis and power system studies are conducted to determine the dangers associated with short circuits and how protective devices interact with one another. To protect people and property, utilize low-risk solutions, such as remote rack equipment.
Electrical and control systems require modification:
Ensure that the appropriate degree of PPE (personal protective equipment) is available based on the arc flash’s hazard level. Changes are being made to engineering equipment and procedures to make them safer. Circuit breakers and energy distribution systems are installed to limit the quantity of energy that may pass through.
With non-current limiting breakers, industries will be able to limit the amount of accessible fault current. During maintenance, these items may be utilized with an open tie. By decreasing the available fault current, the opening connection between dual power feeds decreases arc flash dangers during maintenance. Current-limiting reactors can be used to stop the flow of electricity, so preventing arc problems.
Alter the force of the blast:
Encourage the utilization of arc-resistant materials. Arc-resistant switchgear collects the energy and heat generated by arc flashes and channels it to an unoccupied location through ducts. This is accomplished by using sealed joints, pressure relief vents on the top, and stronger hinges. Care Labs offers a comprehensive array of arc flash research and analysis services. Experts evaluate the dangers of arc flashes to ensure that your safety protocol is current. Care Laboratories recognize potential arc flash dangers and are conversant with how to manage them using modern technologies. ETAP (Electrical Transient Analysis Program) is a program used by care laboratories for research and analysis.
To guarantee that our specialists are ready in the event of an emergency or for normal duties, Care Labs has personnel stationed in many locations. Care Labs is ISO 9001:2008-accredited and has several satisfied clients.
Care Labs offers arc flash testing and analysis in every major city in the United Kingdom, including London, Birmingham, Leeds, and Glasgow.
