Electric
motors are used extensively in the manufacturing industry. Whether
AC- or DC-powered, electric motors are used to drive conveyors, fans,
pumps, and a broad range of specialized equipment designed to speed
up and automate specific manufacturing tasks. Many types of motors
exist for many different applications, but they all have one thing in
common: They all require electrical current to generate the magnetic
fields necessary for them to function.
The
need to monitor electric current
When
an electrical motor’s current is monitored, useful information can
be obtained regarding the status of the motor and the equipment it
runs. Consequently, this information can be used to protect both the
motor and the equipment connected to it.
Pumps
In
the manufacturing industry, pumps are used to push or pull liquids or
gases through tubes and other similarly confined spaces. Most pumps
come with an electric motor, and when the current used by these
motors are monitored, issues such as bearings wear, open discharge
lines, loss of phase, and overcurrent conditions can be prevented.
Heaters
The
output of an electric heater is directly proportional to the square
of the current that flows through it. In that sense, current
monitoring benefits both process monitoring and heater status. If a
heater’s current is not monitored, the unenviable result is
poor-quality products.
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