1.1.3.4.40 DRV_METROLOGY_CONFIGURATION Struct

typedef struct {
    uint32_t mc;
    double freq;
    double tr;
    double rl;
    uint32_t ku;
    DRV_METROLOGY_SENSOR_TYPE st;
    DRV_METROLOGY_GAIN_TYPE gain;
} DRV_METROLOGY_CONFIGURATION;

Identifies values needed to set different metrology configurations.

Field description:

• mc. Meter Constant (amount of energy signified by one output pulse). Units: pulses/kWh (active energy), pulses/kVARh (reactive energy), or pulses/kAmp2-h (amp square)

• freq. Mains frequency. Units: Hz.

• tr.

  • In the case of a current transformer, this is the current transformer ratio

  • In the case of a Rogowski Coil, this is the current sensitivity (units: uV/A) at the main frequency specified in “Frequency” parameter.

• rl.

  • In the case of current transformer, this is the resistor load or burden resistor (units: Ω).

  • In the case of shunt resistor, this is the shunt resistor value (units: uΩ)

• ku. Voltage divider ratio.

• st. Sensor Type. Refer to DRV_METROLOGY_SENSOR_TYPE.

• gain. Programmable Gain Amplifier of the AFE (analog front end). Refer to DRV_METROLOGY_GAIN_TYPE.

None.