The Eaton Electrical Belmont High
Power Laboratory (Belmont Lab) is a high power testing
facility for the use of Eaton Electrical and outside
clients. The Belmont Lab is an ISO/IEC 17025 accredited
testing facility. The Belmont lab performs a wide range of
electrical tests including current interruption tests (in
the low and medium voltage ranges), overload electrical and
mechanical endurance, high current withstands, temperature
rise, thermal and magnetic calibration tests. Typical
test samples include: molded case circuit breakers, power
circuit breakers, vacuum circuit breakers, contactors, low
and medium voltage switchgear, bus duct, fuses, etc.
The laboratory is located 4 miles
south of Belmont, NC approximately, 12 miles from the
Charlotte Douglas International Airport. A dedicated 104,000
Volt power line from one of the largest generating stations
and distribution yards in the Duke Energy system is
located less than one mile away and supplies power for the
lab. The Belmont Lab is organized in two sections: the High
Power Laboratory and the Low Power Laboratory.
High Power Lab
In the High Power Laboratory, a
regulating three-phase transformer feeds two sets of
transformers for the low and medium voltage circuits. These,
together with current limiting reactors and resistors
provide a wide range of voltage, currents, and power factors
for many types of power tests.
The High Power Laboratory has
three test cells; the medium voltage test cell with
capabilities up to 15kV / 250 MVA, the medium current test
cell with a maximum capability of 1000V and up to 65kA, and
the high current test cell with a maximum capability of
1200V and up to 200kA with DC capabilities of up to 1000V
and up to 75kA (see
for complete details).
The control room sits across the
courtyard from the test cells and allows test station
operators, customer and witnesses a full view of all the
test cells as well as control instrumentation.
Low Power Lab
In the Low Power Lab, a 3
phase transformer (with multiple taps) is used to supply
test transformers with various voltages. Test transformers
located inside the lab also have multiple taps for acquiring
various voltages. There are currently three test stations to
conduct short circuit, endurance and overload tests with a
maximum AC capability of 1200V and up to 14kA. The low power
lab also has DC capabilities of 1000V and up to 10kA (see
for complete details). Each test station is equipped with a
programmable logical controller to operate test equipment.
There is a control room - observation area which allows
test station operators, customer and witnesses a full view
of all the test cells as well as control instrumentation.
acquir Test reports are
generated from aquired data and given to the customer at the
completion of testing. It is at the discretion of the
customer whether or not the lab maintains a copy of the test
report. Accredited test reports are also available upon
request. Test results are kept confidential and are not
disclosed to any other parties.
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