R360 MHM

Current Sensor Installation Guidelines (Type 13 & 28 )

Updated on

This document provides an overview of the following topics for the Current Sensor Installation:

  • Cable Management
  • Sensor Assembly
  • Installation Guidelines
Things to Remember when completing an install
  1. A good clean mounting surface is key to good installation.
  2. Sensors should be securely placed to avoid back and forth “rocking motion”. This could appear as a mechanical looseness condition to the analyst, resulting in a misdiagnosis of a machine health condition. 
  3. Before installing a sensor, it should be reset while at the location it will be mounted.  This will allow it to "learn" the mesh network, it's place in the network and the best path(s) to a gateway or repeater.

Remember: Analysts are working remotely and relying on the installation team to ensure reliable data is being received. The vibration analysis can only be as good as the data being collected.

Current Sensor Assembly
  • Locate the 100/300 amp boxes
  • Ensure you have the accurate number of current clamps
Surface Preparation

Do the following to ensure proper surface preparation:

  1. Wipe off any excessive dust.
  2. Perform proper arc flash safety checks to ensure the power is off
  3. Drill a 5/8 hole in the cabinet to install pass-through connector
    1. Never drill a hole in top of cabinet to prevent moisture incursion.
    2. If the hole is in the door, place nearest to hinge due to cable length of CT
Current Sensor Installation Guidelines

Complete the following steps below:

  1. Insert the pass through connector with the o-ring on the outside of the cabinet and tighten the nut.
  2. Install CT #1 on the A Phase wire with the arrow facing in the direction of the current flow
  3. Install CT #2 on the B Phase wire with the arrow facing in the direction of the current flow
  4. Install CT #3 on the C Phase wire with the arrow facing in the direction of the current flow
    1. CT snaps around the wire - does not require the wire to be removed
  5. Route CT cables neatly to the pass-through connector
    1. Use Tie-wraps and Tie-wrap mounting bases as needed
  6. Attach the cable to the pass-through connector
  7. Mount the transmitter in a suitable location
  8. Attach extension cable to pass through connector
  9. Attach extension cable to transmitter
  10. Route extension cable neatly (Picture)
    1. Use Tie-wraps and Tie-wrap mounting bases as needed

See below for an example on how to mount each sensor:

See an example below on how to properly secure your cables:

  1. Route extension cable neatly to secure.
    1. For additional support use tie-wraps and tie-wrap mounting bases as needed.

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