Arc Flash Calculation

Arc Flash may occur at all operating voltages viz., 33 KV, 66KV, high voltages, 400 V, 480 V of Medium Voltages, and low operating voltages of 200V. Many Arc Flash Incidents are observed to be occurring at 480 V i.e., the medium voltage levels.
An Arc Flash Study at your company requires to be conducted so as to mitigate the adverse effects of Arc Flash comply with the regulations set by international regulatory bodies like of OSHA,DGUV and NFPA 70 E and the local regulations proposed by Taiwan.
Hassell free insurance claims.
Avert the possibility of outage.
To have a record of the electrical equipment, loads, protective devices for future developments.

ARC Flash Study Analysis

Arc Flash Survey, a walk through the entire facility to acquire the data. Rather than follow the company's data from the previous records, we at VB Engineering, encourage an in-person walk through from our expert which helps in attaining the accurate data that leads in identification of the loads, switchgear, protective devices and Buses that are at the Arc Flash Risk .
Develop a Single Line Diagram depicting all the loads and their sizes, ratings like operating voltage, grounding types, buses, control panels, switch boards, Enclosure types of various switch gears, the backup devices, primary and secondary protective devices and their ratings. With the latest tools and softwares like ETAP, SKM a detailed single line diagram is developed. At VB Engineering the team of experts is quick in adapting to the new improvements in the tools and softwares used so as to give you a better and expedient diagram. The single line diagram also proves to be commandeering in identifying possible expansion of loads for future purpose or the unnecessary loads which can be replaced or shared by the loads already present there by reducing the electrical burden on the buses.

Arc Flash Hazard Solutions and Report

Perform Arc Flash Hazard Analysis. IEEE 1584-2018 has proposed ways of calculating and develop the mathematical models from the data of the operating frequencies, voltage levels, circuit breakers types, operating characteristics, enclosure type of electrodes, gap between the electrodes, AC or DC, type of grounding used and calculate the incident energy of the arc, Arc current, bolted fault current, arcing time , distance of operation for safe operating conditions, short circuit coordination study.
The short circuit coordination study determines the fault currents and arc currents providing solutions to mitigate the arc. These calculations are augmented considering the worst case scenarios, possible fault currents at different configurations and possibilities of faults.
Tabulation of the Arc Flash reports for easy understanding of the Arc Flash for all working personnel on the equipment.
Identify Arc Flash Risk loads, points of operation and labelling the Arc Flash Hazard with the details of Arcing voltage, Incident energy, Restricted, limited and safe approaching distances, proposing the required PPE. The Flash protection boundaries and PPE details are highly recommended by NFPA 70 E, IEEE 1 584, OSHA . The labelling suggested by VB Engineering is in reference to NFPA 70 E, ANSI Z535.4 Preparation of a detailed Arc Flash Study Report. At VB Engineering, the Arc Flash Study , Arc Flash Hazard Analysis, Arc Flash calculations, short circuit coordination study are performed with high precision with the implementation of the high end softwares like SKM, TANTRA, ETAP and their latest versions so as to ensure a purist Arc Flash Study Report. The Arc Flash Study Report is developed with the requirements and benefits of the company as requested by the management with utmost care in implementing the Electrical safety regulations and standards taking into consideration the size of the company and the economical factors of the management in providing a cost effective Arc Flash Survey.

Arc Flash Study Report formulation

Based on the Arc Flash Study Report, the company is advised to implement the suggestions proposed in the Arc Flash, train the operating personnel in acquainting with the Arc Flash Hazard Labels, provide the necessary PPE, be very attentive and vigilant while working on energised lines, periodic maintenance of the circuit breakers, protective devices, Practice appropriate operating techniques, deenergise the lines when ever possible. It is a abysmal practice in some businesses not to deenergise the lines even when there is no chance of a downtime in the production. This practice is perilous in businesses with highly flammable environment as in a chemical industry, oil and natural gas industries. Needless to say, an Arc Flash incident in such environments is really fatal to the operating personnel and may lead to a irrevocable damage to other equipment costing millions of dollars. We highly recommend that you perform Arc Flash Study at your firm periodically, or there is an increase or decrease of about 30 % of the loads at the firm. At VB Engineering, we dedicate a person or a team of experts solely for your company. This ensures a scrupulous formulation of the report genuinely for the firm in providing the professional training to the workers, understanding the Arc Flash Analysis and the signs, knowledge of the safe operating distance, Arc Flash Boundaries effectively there by justifying the efforts put in by the management for the wellbeing of the workers.
Is safeguarding your infrastructure, industry for Electrical safe working environment your concern? Contact our consultant at VB Engineering right away.