D
Voltage quality
Customers expect their utilities to supply
voltage that meets a minimum level of
quality to allow their facilities to run
without problems. When a customer
experiences a voltage quality issue, they
often assume that the utility is at fault,
so the customer or the utility will use a
tool to validate the voltage quality
at the service entrance. In Europe
a standard for voltage quality has been
established: EN 50160. Many countries
outside of Europe accept this standard
as well. If the utility is ruled out as the
source of the problem, the next step is
to conduct voltage quality tests inside
the facility and at the load.
Symptoms of voltage quality
problems include:
• Flickering lights
• Tripping/resets
• UPS cycling
E
Long-term and intermittent
analysis
Many times, the problem cannot be
identified immediately. It could be the
interaction of different loads on the
power system causing the problem. In
this case, an instrument that can record
voltage and current information over
time helps the user more easily diag-
nose the disturbance. These tests often
use a series of instruments, recording
at multiple locations simultaneously to
pinpoint the root cause of the distur-
bance. Tests can last for months while
personnel wait for the symptom to occur
so they can correlate it to the specific
event that caused the problem.
Symptoms include:
• Intermittentvoltagedisturbances
• Highspeedtransients
Shop for Fluke products online at:
1.877.766.5412
www.MyFlukeStore.com
To Next Page
Loading...
Need help?
General
