3.1.4 Meter Type Settings Register


Bit	31	30	29	28	27	26	25	24
	Dto4WY_TRANSFORM		MISSING_PHASE[1:0]		SERVICE_TYPE[3:0]
Access	R/W		R/W	R/W	R/W	R/W	R/W	R/W
Reset


Bit	23	22	21	20	19	18	17	16

Access
Reset


Bit	15	14	13	12	11	10	9	8
			SENSOR_TYPE_I_N[1:0]		SENSOR_TYPE_V_C[1:0]		SENSOR_TYPE_I_C[1:0]
Access			R/W	R/W	R/W	R/W	R/W	R/W
Reset


Bit	7	6	5	4	3	2	1	0
	SENSOR_TYPE_V_B[1:0]		SENSOR_TYPE_I_B[1:0]		SENSOR_TYPE_V_A[1:0]		SENSOR_TYPE_I_A[1:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset

Bit 31 – Dto4WY_TRANSFORM

For use with: 4-Wire and 3-Wire DELTA meters only. Phase voltages (and currents, where applicable) are transformed into an equivalent 4-wire Wye service for metering using alternate equations.

Value	Name	Description
0x0	DISABLED	Phase voltages remain in native service (no transformation).
0x1	ENABLED	Phase voltages transformed into an equivalent 4-wire Wye service. Transformation may lose accuracy in non-Blondel/unbalanced situations. Meter vector transformation is useful in some applications and possible, transforming 3-Phase Delta meters into an equivalent 3-Phase 4WY, but is useful only for balanced voltage situations.

Bits 29:28 – MISSING_PHASE[1:0] Missing phase voltage select

For use with Poly-phase 4-wire Wye 2-1/2 element meters only

Value	Description
0x0	Generate missing phase voltage for Phase_A: V_A = -(V_B + V_C);
0x1	Generate missing phase voltage for Phase_B: V_B = -(V_A + V_C);
0x2	Generate missing phase voltage for Phase_C: V_C = -(V_A + V_B).

Bits 27:24 – SERVICE_TYPE[3:0] Electrical Service Type

The service type determines what meter form is being implemented and how the Metrology DSP core interprets and processes the ADC values. For more information, refer to Annex. Meter Forms.

Value	Name	Description
0x0	3P4WY_3E_3V3I	Three-phase 4-wire Wye (3-element)
0x1	3P4WD_3E_3V3I	Three-phase 4-wire Delta (3-element)
0x2	3P3P4WY_2p5E_2V3I	Three-phase 4-wire Wye (2-½ element)
0x3	3P4WD_2E_3V2I	Three-phase 4-wire Delta (2-element)
0x4	3P3WD_2E_2V2I	Three-phase 3-wire) Delta (2-element)
0x5	2P3W_2E_2V2I	Two-phase 3-wire Network (2 element)
0x6	1P3W_1p5E_1V2I	Single-phase 3-wire (1-½ element)
0x7	1P2W_1E_1V1I	Single-phase 2-wire (1 element)
0x8	1P3W_1E_2V1I	Single-phase 3-wire (1 element)

Bits 13:12 – SENSOR_TYPE_I_N[1:0] Current Sensor Type on N Phase

Selects the types of current and voltage sensor used. Read the following table for additional information.

Bits 11:10 – SENSOR_TYPE_V_C[1:0] Voltage Sensor Type on C Phase

Selects the types of current and voltage sensor used. For each channel selected as using a Rogowski sensor, the Metrology DSP implements a digital integrator filter to normalize the effects of the sensor’s di/dt behavior.

Value	Name	Description
0x0	CURRENT TRANSFORMER	—
0x1	RESISTIVE SHUNT	May only be used with phase-to-neutral voltage measurement applications.
0x2	ROGOWSKI COIL (CRC) CURRENT SENSOR	A digital integrator function is added to the DSP of all current channels selected as using Rogowski Coils. When SENSOR_TYPE_I_x = 2, an additional phase correction is internally added to each channel with a Rogowski sensor in the amount of -0.3704º (@ 60 Hz) to correct for a linear phase response introduced by the digital integrator filter. This is taken into account during the internal calculation of actual phase-correction filter coefficients, when a new set of phase calibration settings are loaded, and must not be added by the user in the phase-correction entries. When SENSOR_TYPE_I_x is set to other values, it takes no effect.
0x3	RESISTIVE DIVIDER (VRD) VOLTAGE SENSOR	Normally, this is the typical option selected for voltage sensors.