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Mottramlabs / MQTT-Power-Sensor

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SCT-013-000 YHDC 30A 1V #4

Open excogitation opened 3 years ago

excogitation commented 3 years ago

Since I am after three tries ordering the SCT-013-000 YHDC 30A 50mA version unfortunately now the proud owner of 3 SCT-013-000 YHDC 30A 1V I was wondering if that can also be put to use through some adaption or if I simply have to get the right SCT-013 variant?

Mottramlabs commented 3 years ago

Hi Christian

As I understand it this has the burned resistor built in, so on the PCB we can simply remove R10, R11, R1 and R12 (the burden resistors for the 30/50mA type). I don't know the value of the internal burden resistor so the calibration would need to be changed, but should work fine.

I have ordered one of this CT's to test.

PCB schematic

https://www.mottramlabs.com/pdf/SCH201077.pdf

Regards

David

On Wed, 11 Nov 2020 at 22:48, Christian Stöveken notifications@github.com wrote:

Since I am after three tries ordering the SCT-013-000 YHDC 30A 50mA version unfortunately now the proud owner of 3 SCT-013-000 YHDC 30A 1V I was wondering if that can also be put to use through some adaption or if I simply have to get the right SCT-013 variant?

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edekeijzer commented 2 years ago

Hi Christian As I understand it this has the burned resistor built in, so on the PCB we can simply remove R10, R11, R1 and R12 (the burden resistors for the 30/50mA type). I don't know the value of the internal burden resistor so the calibration would need to be changed, but should work fine. I have ordered one of this CT's to test. PCB schematic https://www.mottramlabs.com/pdf/SCH201077.pdf Regards David

Hi David, did you ever get into testing this? I've ordered the single sensor board as well as the 4-channel ADS1115 board a while ago and regardless of the load through my clamp, it always shows the same values.