Split-core CT, 400A, 400A:26.6mA, 32mm (1.26") Hole Diameter, SCT-032-400: Does it have an internal burden resistor?

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earlenceferns
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Joined: Fri May 11, 2018 2:03 pm

Split-core CT, 400A, 400A:26.6mA, 32mm (1.26") Hole Diameter, SCT-032-400: Does it have an internal burden resistor?

Post by earlenceferns » Fri May 11, 2018 2:07 pm

As the title says, does it have an internal burden resistor? If so, what is its value? If not, what kind of resistor should I put? I want to measure loads in the US on 110 Volt ac supply.

Also, I recently purchases two of these CTs, and one of them gives me infinite resistance on a multimeter. The other one gives about 240 ohms. It seems like one is broken. How do I get a replacement? Seems like it came broken from the factory

Jameson
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Re: Split-core CT, 400A, 400A:26.6mA, 32mm (1.26") Hole Diameter, SCT-032-400: Does it have an internal burden resistor?

Post by Jameson » Mon May 14, 2018 6:24 pm

Our CTs do not have a burden resistor built in, but the circuitry of the meter does require a 5 ohm burden resistor.

Our CTs will put out 0 to 26.6 mA AC on their secondary over the rated range of their primary input.

You should not see no continuity between the 2 leads of your CT. It could be bad. Do you have an Omnimeter to connect this to? If so, have you tried connecting it to your Omnimeter to see what your amperage read is?
Jameson
EKM METERING
http://www.ekmmetering.com
831.425.7371

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