Related Products: |
EGSA-013, EGSA-017 |
Related Documents: |
EZDP-2007 |
Type: |
Installation |
Keywords/Labels: |
Shaft Grounding, Installation |
Summary: |
Summary of steps for installing the grounding wire. |
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Drill and tap a 5/16 in-18 hole 3/4 in deep in a suitable grounding location on the outside of the unit case to attach the grounding ring terminal (3/8 in dia. terminal).
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Cut the supplied grounding cable and 4 twisted pair cable to the appropriate length. Route the cables to the Remote Meter Point box as shown in Route the Cables to the Remote Meter Point below.
Remove four screws from the corners of the faceplate. Remove the faceplate to reveal the terminal connectors inside the Remote Meter Point box.
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Route cables from the Shaft Grounding Assembly to the terminal connectors. If your wiring diagram differs from this one, contact Cutsforth Engineering Support.
Part
Description
Part
Description
To and From Ground Current Test Point
To Shaft Voltage Test Point
To Meter Rope Test Point
To Ground Rope Test Point
Screw-down Jumper
From Shaft Grounding Assembly
To Unit Case Ground
Black Wires & Drain from each Twisted Pair
From Meter Rope
From Meter Rope Wear Indicator
From Ground Rope Wear Indicator
Only qualified electrical personnel should take measurements at the remote test points ( = Ground Rope, = Meter Rope). For any of the test points located on the faceplate of the Remote Meter Point, use a hand-held volt meter, oscilloscope, clamp-on ammeter, or other appropriate testing device. Always follow proper electrical safety procedures.
Complete a shaft grounding continuity test before you connect the Shaft Grounding Assembly to the Remote Meter Point (ropes removed):
With the Shaft Grounding Assembly installed, place the switch on the junction box assembly to "Run" mode.
Strip all wires from the junction box assembly at the Remote Meter Point end and check that there is NO continuity between ANY wires.
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Check for continuity to determine which color wire is connected to the following:
Junction Box Assembly Metering Rope Holder Mount – Wire Color __________
Junction Box Assembly Metering Rope Wear Indicator Post – Wire Color __________
Junction Box Assembly Grounding Rope Wear Indicator Post – Wire Color __________
Connect wires from the Junction Box Assembly to the Remote Meter Point.
Check that there is continuity between the Remote Meter Point panel ground points and turbine ground.
Check that there is continuity between the Remote Meter Point panel shaft voltage test point and the Shaft Grounding Assembly metering rope holder mount.
Install the ropes in the Shaft Grounding Assembly.
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At the Remote Meter Point check that there is NO continuity between:
Grounding rope "wear indicator" test point and ground test point
Metering rope "wear indicator" and grounding test point
Complete a shaft grounding continuity test before you connect the SCA to the Remote Meter Point (ropes removed):
Strip all wires from the SCA at the Remote Meter Point end and check that there is NO continuity between ANY wires.
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Check for continuity to determine which color wire is connected to:
SCA Metering Rope Holder Mount – Wire Color __________
SCA Metering Rope Wear Indicator Post – Wire Color __________
Connect the case ground and SCA wires to the Remote Meter Point. If there is no monitoring, run a small ground wire from the Remote Meter Point ground terminals to the unit case.
At the Remote Meter Point panel confirm that there is continuity between the Remote Meter Point panel ground points and unit case ground.
Check that there is continuity between the Remote Meter Point panel shaft voltage test point and the SCA rope holder mount.
At the Remote Meter Point panel confirm that there is NO continuity between the shaft voltage test point and ground test point.
Install ropes in the SCA.
Confirm there is NO continuity between the rope "wear indicator" test point and ground test point.
Upon completion of the grounding wire installation, perform the necessary inspections as described in Test Point Inspections | Series 1.