This manual describes the installation of the Cutsforth Shaft Grounding Assembly. 

Components

These parts are included in the Shaft Grounding Assembly installation package:

1 Shaft Grounding Assembly with Junction Box

Part # EGSA-310

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2 Shaft grounding ropes

Part # EGHK-205

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1 Weldless attachment arm assembly

Part # EGSA-301

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1 Rope guide spacer (1/16" thick)

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1 Custom drill bushing for weldless attachment arm elbow

Part # EGSM-308

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1 Custom drill bit assembly (0.201" Dia)

Part # EGSM-309

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[Optional] 1 Shaft Contact Assembly with Junction Box

Part # EGSA-320

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Required Tools

  • 1/2" hex wrench socket or IP40 Torx Plus bit

  • 1/4" hex key wrench

  • 3/16" hex key wrench

  • 5/32" hex key wrench

  • 5/16" hex key wrench

  • Drill

  • 5/16"-18 tap

  • Letter F drill bit

  • Wire cutters

  • Wire strippers

  • Wire crimpers

  • Tape, banding, and/or clamps

  • Saw for cutting 1.25" diameter pipe

  • Torque wrench (min torque required: 100 in-lbs, max torque required: 70 ft-lbs)

General Specifications

  • Rope guide width: 1.25" (3.18 cm)

  • Compatible with 3/4" flexible conduit

  • Attachment Arm mounting bracket dimensions: 2.5" x 2.5" (6.4 cm x 6.4 cm)

  • Maximum operating temperature of the Shaft Grounding Assembly: 300˚F (149˚C)

  • Minimum shaft diameter: 5" (13 cm)

Installation Prerequisites

  • The shaft must be fully coupled.

  • The generator and turbine bearing caps in the load compartment must be fully installed.

  • The condition of the shaft at the Shaft Grounding Assembly installation location must be documented by photo or video. If the shaft is still rotating, use a strobe to capture a video of the shaft condition. To facilitate a robust electrical contact for the shaft grounding system, make sure that the shaft surface is free of grooving, pitting, oxidation, and contamination.

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