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Product Introduction
• Short Circuit Current / Duration
Short Circuit Current
Duration
• Arc Flash Protection Calculations
In order to protect personnel from the possibility of being injured by an arc flash
hazard, Arc flash calculation of the battery system is estimated with the Incident Energy
Calculations refer to Annex D of NFPA 70E.
Battery System Voltage
Battery System Internal Resistance
Bolted Fault Current
Arcing Current
Clearing Time
Arc Flash Incident Energy
Working Distance
Battery system installers must wear PPE(Personal Proactive Equipment) according to
NFPA 70E Article 130, referring to the calculation results above.
WARNING
• When install the battery system, the worker shall wear arc-rated clothing in every occasions and
places to protect him/her from any possible exposure to an electric arc flash.
• The arc-rated clothing that the worker is wearing must assure the worker's movement and visibility
while covering all ignitable clothing.
• The worker shall wear the non-conductive safety helmet every occasions and places to protect him/
her from any danger of head injury from electric shock or burns due to the contact with energized
electrical conductors or circuit parts resulting from electrical explosion.
• The worker shall wear non-conductive protective equipment for the face, neck, and chin in every
occasions and places to protect him/her from any danger of injury from exposure to electric arcs or
flashes resulting from electrical explosion.
• The worker shall wear non-conductive protective equipment for the eyes in every occasions and
places to protect him/her from any danger of injury from electric arcs, flashes resulting from
electrical explosion.
• The worker shall wear hearing protection within the arc flash boundary.
• The worker shall wear Heavy-duty leather gloves or arc-rated gloves, satisfying the following
regulation level, for arc flash protection. In the case of wearing the rubber gloves for the shock
protection, he/she shall wear additional leather protectors above the gloves.
• The worker shall wear Heavy-duty leather footwear or dielectric footwear or both to provide some
arc flash protection.
• The worker shall inspect Arc-rated apparel before every use.
• Work clothing or arc flash suits that are contaminated or damaged to the extent, impairing the
protective qualities, shall not be used.
• Protective items that become contaminated with grease, oil, or flammable liquids or combustible
materials shall not be used.
• The garment manufacturer's instructions for care and maintenance of arc-rated apparel shall be
followed.
• Arc-rated apparel shall be stored in a manner that prevents physical damage;damage from moisture,
dust, or other deteriorating agents or contamination from flammable or combustible materials.
12
3.209kA
3ms
58.8V
0.0183Ω
3.209kA
1.604kA
3.5ms
0.0015 Cal/cm
2
450mm(18inch)
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