Network Rail Hardware (Maintenane Spares and Line Replaceable Units)

Instruction Manual: Model 344 Instruction Manual 11-24-12
Instruction Manual Addendum: Model 344 Instruction Model Addendum 1.21b
Pocket Instruction Manual: Model 344 Pocket Instruction Manual
How to Use the Model 344: Model 344 How to Use Visual Aid
Evaluating Ballast Quality: Model 344 Evaluating Ballast Quality
Checking Insulated Joints: Model 344 Notes on Checking Insulated Joints
Electrical Joints and Arrestors: Model 344 Checking Joints and Lightning Arrestors
Line and Cable Faults: Model 344 Finding Line and Cable Faults
Checking Track Shunts: Model 344 Notes on Checking Track Shunts
Brochure: Model 344 Brochure

The primary purpose of this meter is checking Insulated Joint integrity but this device can find any track circuit short such as those caused by:

….Shorted Insulation, Banding Hidden in Ballast, Shorted Bridge Deck or
….Retarder Insulation and Contaminated Ballast.
….It can Test Track Insulation and can be used to Locate Line or Cable Shorts.
….Locate High Resistance Bonds.

….Determine Ballast “Quality”.
….Test Resistance of Testing Shunts.
….Determine Voltage of Track Circuits, Both AC & DC.
….Using the Spectrum Analyzer, determine frequency and voltage levels of motion,
….constant warning time devices, overlay.

We recommend the following accessories for use with the Model 344:
Rail Connector Set and File Connector Set.