SCT Split Core Current Transformer

Brand Model Number Input Current (RMS) Turn Ratio Output Type Output Value Notes
YHDC SCT-013-000 0∼100A 100A:0.05A Current Output 0-50mA Current output Type with built-in protective diode
YHDC SCT-013-030 0∼30A N/A Voltage Output 1 V Across built-in sampling resistor
YHDC SCT-013-050 0∼50A N/A Voltage Output 1 V Across built-in sampling resistor
  • Accuracy: ±1%
  • Linearity: ≥ 0.2%
  • Weight: 50g
  • Core Material: Ferrite
  • External Material: ABS Plastic
  • Dielectric Strength VAC/1min:6 kV
  • Work voltage: 660V
  • Open Size:13mm×13mm
  • Frequency: 50Hz to 1 kHz

SCT013 Models

STC 013 000 Arduino Interfacing

STC-013-000 modules come without Sampling resistor, it provide current output proportionally to Input current. To convert current into voltage R5 (burden resistor) 18Ω to 33Ω must be added across CT terminal. - burden-resistor-dat - resistor-dat

STC 013 050 Arduino Interfacing

All the remaining module in STC-013 series comes with Inbuilt burden resistor. No need to add externally.

code

“EmonLib.h”

https://github.com/openenergymonitor/EmonLib/blob/master/examples/current_only/current_only.ino

Electricity monitoring library designed by https://openenergymonitor.org is best for voltage and current measurement usign Arduino Code.

#include “EmonLib.h” // Include Emon Library

EnergyMonitor emon1; // Create an instance

void setup()
{
    Serial.begin(9600);
    emon1.current(1, 111.1); // Current: input pin, calibration.
}

void loop()
{
    double Irms = emon1.calcIrms(1480); // Calculate Irms only
    Serial.print(Irms*230.0); // Apparent power
    Serial.print(” “);
    Serial.println(Irms); // Irms
}

ref