Arc Flash Analysis

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Need An Arc Flash Study Assistance?

Arc flash study is very crucial in power systems. An arc flash is a phenomenon where a flash-over of electric current leaves its intended path and travels through the air from one conductor to another, or to ground. The results are often violent and when a human is in close proximity to the arc flash, serious injury and even death can occur. Arc flash can be caused by many things including: Dust, Dropping tools, Accidental touching, Condensation, Material failure, Corrosion, Faulty Installation.

The main objective of an arc flash study is to identify and analyse high risk arc flash areas in your electrical power system with greater flexibility by simulating and evaluating various mitigation methods in arc flash study.

Why Arc Flash Study?

To determine maximum incident energyat HV and LV switchgear
To establish the Arc flash boundary limit based on the arc fault current and fault clearing time.
To specify the hazard / risk category
To recommend suitable PPE for the safety of workers.
To generate suitable danger and warning labels.

Methodology for Arc Flash Study

Collection of inputs (SLD, equipment parameters – Voltage kV rating, Power MVA rating, Impedance, System fault level, X/R ratio, protection settings).
Check the electrode configuration of the panel based on IEEE 1584 such as VCB, VCBB, HCB, VOA, HOA
Modelling in study software.
Determining the bolted fault current and performing short circuit studies at each switch-gear for the worst scenario.
Determine the arc fault current.
Determine the duration of arc fault current based on protection settings/relay coordination.
Determine the incident energy for each switch-gearat the working distance and suitable PPE.
Generating danger and warning labels.
Submission of detailed report including labels.

Outcomes Of Arc Flash Study

Detailed report explaining the input data, system configuration, observations and recommendations.
Fault currents at various buses and branches in the system.
Maximum incident energy at HV and LV switchgear.
Arc flash boundary limit.
Recommendation on suitable PPE.
Danger and warning labels with necessary safety information.
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