In an effort to protect businesses and employees, common
methods of performing breaker testing that businesses located in major
metropolitan areas can count on include injection, Meggar, hi-pot, and relay
tests. An emergency failure can easily
inflict hazardous working environments, as well as an expensive ordeal for
owners by stunting productivity until the unit is corrected.
Lack of a fail-proof way to detect faulty circuits without
putting each through a professional diagnostic test makes the decision between
switchgear maintenance companies a meaningful exercise to ensure your generator
investment is not compounded with repair costs, or even an expensive system
replacement. Knowing what each strategy of prevention entails, as well as their
purpose for your power unit, is the best way to demand the highest quality
level of breaker testing that business owners deserve.
Primary and Secondary Injection
Proper analysis of low voltage circuits involves an
application of high current to the primary conductors, in order to prove the
current transformers, circuits, and protective devices are properly connected.
Secondary trials are run to check accuracy while the electrical circuit is
closed, without carrying current through the main poles as a method of thorough
investigation. Injection tests evaluate the performance of every single
component involved in a power system, representing one of the most valuable
services an owner can utilize.
Meggar and Hi-Pot
Meggar and Hi-Pot tests work hand in hand to prevent costly
system insulation failures. A Meggar measures the amount of insulation
resistance, or current leakage from a conductor, while a Hi-Pot tests the
capacity of voltage the insulation can endure before seizing. In a sense, the
Meggar checks the present condition of a system to evaluate immediate concerns,
while the Hi-Pot measures leakage over a longer timeframe, applying conductors
with voltage to determine if an increase in leakage occurs.
Protective Relay
If power system defects are not corrected in a timely
fashion, personal injuries, serious damages, and wasteful expenses soon follow.
Protective relays act as an around the clock guardian of your equipment, when
switchgear maintenance companies are not physically in your facility.
Designed and electrically engineered to detect potential
problems, protective relay automatically trips an electrical circuit before a
power outage occurs. As one of the most undeniably valuable contributors of a
safe and effective power supply operation, emergency equipment must be
professionally calibrated on a regular basis to grant your company all of the
benefits they possess.
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