3M Official Manual for Dynatel Advanced Modular System

Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS

RFL (Resistance Fault Locate)

Use RFL to find the distance to a short or ground.

Important Note: You must first use the Auto test , or the Ohmmeter , to determine the type of fault.

1.There are two types of hook-ups, Separate Pair and Single Pair. Separate Pair is more accurate, but it requires hooking up more wires. The “Good” wires can be any gauge and any length. As an example, the Good wires can be jumper wire. Separate Pair is recommended for applications where you have a short or ground in an aerial cable or a direct buried cable and you want to find the fault the first measurement.

2.Single Pair requires that the “Good” wire is the same gauge and length as the faulted wire. Single Pair is appropriate for situations where you are looking for the fault to be in the nearest pedestal.

3.RFL has the ability to find the distance to a short or ground using a single section of cable or a section with multiple gauges. Select Single- or Multi-section for your situation.

RFL>Hook-Up

There are ten possible scenarios for connecting a 965AMS tester to use the RFL function:

Tip-Ground Separate Pair

GRN	Ground (Earth)	Fault
BLK	Tip (A) 1/Fault
		Strap
YEL	Ring (B) 2/Good
BLU	Tip (A) 2/Good

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