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Every time you make a significant change to
your electrical distribution system—an
expansion, reconfiguration, additional load
or upgrade—you challenge its reliability.
HVM’s power system studies can help you
manage the increasing complexities of
maintaining a safe, reliable and efficient
electrical distribution system.
The Short Circuit / Coordination Study can
reduce the risk your company faces and help
avoid catastrophic losses. The study will
determine the magnitude of currents flowing
throughout the power system at various time
intervals after a fault occurs and evaluates
the size and settings of a system’s
protective devices, such as relays, fuses
and circuit breakers, and the circuits they
protect.
The goal is to provide power transformers,
switchgear, substations, motor control
centers, panel boards and other electrical
equipment with the required protection. The
study also assists with selecting
appropriate types, ampere ratings and device
settings to ensure minimum service
interruption under overload and short
circuit conditions and to ensure the
protective device closest to the overload or
short-circuit condition is the one that
operates in order to isolate the failure as
quickly as possible.
Features & Benefits
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Ensures safety of personnel
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Reduce unnecessary downtime
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Provides recommended settings for adjustable
trip circuit breakers and relays
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Helps increase coordination (selectivity)
between devices
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Identifies deficiencies in system protection
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Identifies and recommends corrective action
for under-protected equipment
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Ensure compliance with National Electrical
Code requirements and appropriate ANSI/IEEE
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standards
Scope
HVM’s Short Circuit Coordination Study
determines the magnitude of currents flowing
throughout the power system at various time
intervals after a fault occurs and evaluates
the size and settings of a system’s
protective devices, such as relays, fuses
and circuit breakers, and the circuits they
protect.
The Short Circuit / Coordination Study:
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Develops a computer model of the electrical
system
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Calculates the fault current at various
locations in the plant
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Identifies whether the system and the
equipment can withstand the available fault
current
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Evaluates the application of breakers and
fuses
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Identifies problem areas in the system
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Specifies the types, ampere ratings and
device settings of the equipment to ensure
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minimum
service interruption
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Helps improve the reliability of your system
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Provides recommended solutions
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