Wye Service; Delta Service; Ade9000 Service Type Summary - Analog Devices ADE9000 Technical Reference Manual

UG-1098
In a Blondel compliant 3-wire delta meter, only the overall
power consumed by the system is meaningful; the individual
phase powers are not meaningful because a line current is
multiplied by a line to line voltage. To obtain the overall power
consumed by the system (active, reactive, and apparent), add
the contribution from Phase A and Phase C.
APPLYING THE ADE9000
COMPLIANT 4-WIRE WYE SERVICE
To use the ADE9000 in a non-Blondel compliant 4-wire wye
service (such as for ANSI meter forms 6S, 7S, 14S, 29S, 36S, 46S,
and 76S), the Phase A and Phase C voltages are measured and
the Phase B voltage is calculated, VB = −VA − VC. All three
phase currents are measured. For this configuration, write
VCONSEL[2:0] = 010 and connect as shown in Figure 67.
PHASE A
220V 0°
PHASE B
220V –120°
PHASE C
220V 120°
NEUTRAL
PHASE A
220V 0°
VAN
VCONSEL = 010
0.353V 0°
VA, VB, VC VA
Figure 67. Non-Blondel Compliant 4-Wire Wye
The phasor diagram follows Figure 56. Phase sequence error
detection is performed based on the expected ABC sequence;
see the Phase Sequence Error Detection section for more
information.
To obtain the total power (active, reactive, and apparent), add
the contribution from Phase A, Phase B, and Phase C.
TO A NON-BLONDEL
VAP
VBP
VCP
VAN
VBN
VCN
AGND DGND
PHASE C
PHASE B
VBN 220V –120° VCN 220V
0.353V –120° 0.353V
VB VC
ADE9000 Technical Reference Manual
APPLYING THE
COMPLIANT 4-WIRE DELTA SERVICE
To use the ADE9000
service (such as for ANSI meter forms 8S, 15S, and 24S), the
Phase A and Phase C voltages are measured and the Phase B
voltage is calculated, VB = −VA. All three phase currents are
measured. For this configuration, write VCONSEL[2:0] = 011
and connect as shown in Figure 68.
PHASE A
220V 30°
PHASE B
220V
220V
VCONSEL = 011
VA, VB, VC
120°
120°
The phasor diagram follows Figure 58. Phase sequence error
detection is performed based on the expected ABC sequence;
see the Phase Sequence Error Detection section for more
information.
To obtain the total power (active, reactive, and apparent), add
the contribution from Phase A, Phase B, and Phase C.
ADE9000
To summarize, the
configurations to measure 4-wire wye, 4-wire delta, and 3-wire
delta installations. Table 28 summarizes which VCONSEL[2:0]
and ICONSEL settings to use for each configuration.
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ADE9000 TO A NON-BLONDEL
in a non-Blondel compliant 4-wire delta
–150°
120°
NEUTRAL
PHASE A PHASE B
VBN 220V –150°
VAN 220V 30°
0.353V –150°
0.353V 30° VB
VA
Figure 68. Non-Blondel Compliant 3-Wire Delta
SERVICE TYPE SUMMARY
ADE9000 can be used in many different
VAP
VBP
VCP
VAN
VBN
VCN
AGND DGND
PHASE C
VCN 220V 120°
VC 0.353V 120°