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O P ER AT I O N , S TA N DA R D P R O D U C T I O N T E S T S
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6 Standard production tests
(factory only)
The standard production tests for our products
include the following:
1. Verification of wiring: We check all connections
based on the provided diagrams. If the SEL
control system is being used, we test the
wiring through actual operation.
2. Electrical operation: We perform tests to
ensure the proper functioning of the recloser.
This includes closing and tripping operations,
as well as checking the response to overcurrent
events and automatic reclosing.
3. Manual controls: We check all the manual
controls on the RER620, RER615 and Beckwith
M-7679 models. This includes testing local and
remote operation, non-reclosing, ground
disabling and other functions. For SEL control,
we use the default programming to test the
operations using the front-panel pushbuttons.
4. Contact pole resistance: We measure the
contact pole resistance on each phase
of a complete recloser.
5. Voltage withstand test: We conduct a
comprehensive test based on IEC 62271-1
dielectric tests. This test includes checking
insulation between live parts and the tank,
across open contacts and between phases.
The applied test voltage follows ANSI C37.60
standards: 60 kV for a 15.5 kV rated maximum
voltage, 60 kV for a 27 kV rated maximum
voltage and 70 kV for a 38 kV rated maximum
voltage. The test duration is 1 minute, during
which we measure leakage current.
6. Minimum trip test: We verify the minimum trip
capability of the recloser.
7. Partial discharge testing: We perform tests
in accordance with IEC 62271-1 to detect any
partial discharge.
8. Timing tests: We conduct timing tests for each
phase, including measuring close time, open
time and bounce duration.
9. Mechanical operation testing: We perform
manual tripping and carry out 25 open/close
operations to test the mechanical
components.
10. Voltage sensing calibration: We calibrate the
voltage sensing mechanism at the nominal
rated voltage.
11. CT ratio, polarity and metering check:
We check the CT ratio, polarity and metering
accuracy.
06
Summary of Contents for GridShield 3P
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