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Model 600-DMG1
CT Demagnetization Circuit

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CT Testing (Ratio Burden Tests)
CT Testing 3-Phase Meter Test
Load Box
CT Demagnetization
Accessories

CT Demagnetization Before
Demag -- Ratio 212.4

CT Demagnetization Before Demag -- Ratio 212.4

CT Demagnetization After
Demag -- Ratio 200.2

CT Demagnetization After Demag -- Ratio 200.2

 


Overview
Many of you have seen a measured ratio test reading of a CT that was not what it should be: For example, a 200:5 CT that measured out to be 212:5 but passed the burden test. This is a magnetized CT. And what can you do about it?

Wither nothing or change out the CT. Noe there is a third option: The Spinlab Demag Circuit used in tandem with the Bird Dog Plus. Of the 32 failure modes of a meter circuit, magnetized CTs are by far the most common ones after installation errors. A magnetized CT can be caused by a lighting strike, ground fault, or open circuiting a CT.

With this shoebox size device, you simply attach the duckbill connector to the phase of the test switch you want to demagnetize, turn the unit 'On' press the 'Demag button', and in less than 60 seconds your CT will be demagnetized. It is that easy, and you don't have to take anything out of service! Never has increasing the accuracy of a CT-metered site been easier.
 

Model 600-DMD1 CT Demagnetization Unit. "Now, without taking anybody out of service, you can fix a magnetized CT in less than one minute!" with CT Demagnetization Circuit 600-DMG1

Features/Benefits
  • Works on any CT rated site - primary or secondary.
  • Works on secondary current from 0.1 amp to 10 amps.
  • Safety lockouts built-in for excessive current, voltage, and temperature readings.
  • Interfaces directly to the Bird Dog Plus for easy before and after monitoring to prove results.
  • Compact size and weight allows you to carry it easily from site to site.
  • Automatically predetermines the extent of the test needed to demagnetize a CT based on load and the degree of magnetization.
  • Demagnetizes a CT normally in less than one minute.
  • No batteries to maintain - works from the site power.
 

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Macey's Electrical Pty. Ltd.
ABN 17 344 601 468
Unit 1, 49 Gavenlock Road, Tuggerah, NSW Australia 2259
Phone: +61 2 4353 4644    Mobile: 0412 678 925
Email: sales@maceyselectrical.com.au