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Shutters – locked and covering primary stabs
Breaker position label – intact and legible
Compartment door – moves freely and has no difficulty securing when closed
TOC switch – actuator arm moves inward and springs back outward
Secondary terminals – secured and no loose wires
Cell Functional Testing
Truck lift platform locking tab engages into cell compartment slot (see figure 13)
Breaker interlocks fully engage module interlock slot (see figure 13)
Circuit breaker racks in to “Test” with little resistance (<25lbs torque)
Breaker locks into test position
Circuit breaker operates in “Test” position (Open/Close) – both manually and remotely
Breaker fails to close when charged and in an intermediate racking position – between “Test” and
“Connect”
Circuit breaker racks in to the “Connect” position with little resistance, increasing only within ~1 inch prior
to the connect position (<50lbs torque)
Shutter mechanism unlocks and opens – shutters unlock and begin to open between test and connect
TOC switch – actuator arm moves inward when breaker is connected and springs back outward when
breaker is racked out
Breaker locks into connect position
Circuit breaker operates in “Connect“ position (Open/Close)
Indicating lights operate as expected (Open/Close) – On some ABB Switchgear, the Breaker “Open”
indicating light serves as both the breaker is open and that the breaker has reached either the “Test” or
“Connect” position during racking. This is due to the breaker’s TOC “pin monitor” contact being in series
with the breaker “Open” indicating light circuit. The pin monitor is only closed when the breaker is in one of
the three racking positions “Disconnect”, “Test” and “Connect” and the racking pin has fully seated into
position.
All controls function properly
Breaker has passed all inspection and operational testing.
Sign and Date _____________________________________
NOTES:
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Provide an electronic copy of the completed check list to:
ABB Inc.
Medium Voltage Switchgear
655 Century Point
Lake Mary, Florida 32746
Phone: +1 407 732 2000
Customer service: +1 800 929 7947 ext. 5
+1 407 732 2000 ext. 5
E-Mail: [email protected]
