Supported Electrical Networks - AEMC PEL 102 User Manual

A.4 Supported Electrical Networks
The following types of distribution systems are supported:
■
V1, V2, V3 are the line-to-neutral voltages of the installation under test
■
[V1=VL1-N; V2=VL2-N; V3=VL3-N].
■
Low caps v1, v2, v3 are used for time values
■
U12, U23, U31 are the line-to-line voltages of the installation under test.
■
Low caps are used for time values [u12 = v1-v2; u23= v2-v3, u31=v3-v1]
■
I1, I2, I3 are the currents flowing in the line conductors of the installation under test.
■
Low caps i1, i2, i3 are used for time values
Distribution
Abbreviation
System
Single phase
(1-Phase 2-Wire)
Split phase
(1-Phase 3-Wire)
3-Phase 3-Wire ∆
3P-3W∆2
[2 current sensors]
3-Phase 3-Wire
Open-∆ 3P-3WO2
[2 current sensors]
3-Phase 3-Wire Y
3P-3WY2
[2 current sensors]
3-Phase 3-Wire ∆
3P-3W∆3
3-Phase 3-Wire
3P-3WO3
Open-∆
3-Phase 3-Wire Y 3P-3WY3
3-Phase 3-Wire ∆
3P-3W∆B
balanced
3-Phase 4-Wire Y
3-Phase 4-Wire Y
3P-4WYB
balanced
Power & Energy Logger Model PEL 102 and PEL 103
Voltage measurements are performed between L1 and N.
1P-2W
Current measurements are performed on L1 conductor.
Voltage measurements are performed between L1, L2 and N.
Current measurements are performed on L1 and L2
1P-3W
conductors.
Neutral current is calculated: iN = i1 + i2
Power measurement method is based on 3 wattmeters method with
virtual neutral.
Voltage measurements are performed between L1, L2 and L3.
Current measurements are performed on L1 and L3 conductors.
I2 current is calculated (no current sensor connected on L2):
i2 = - i1 - i3
Neutral is not available for current and voltage measurement
Power measurement method is based on 3 wattmeters method with
virtual neutral.
Voltage measurements are performed between L1, L2 and L3.
Current measurements are performed on L1, L2 and L3 conductors.
Neutral is not available for current and voltage measurement
Power measurement is based on 1 wattmeter method.
Voltage measurements are performed between L1 and L2.
Current measurements are performed on L3 conductor.
U23 = U31 = U12.
I1 = I2 = I3
Power measurement method is based on 3 wattmeters method with
neutral.
Voltage measurements are performed between L1, L2 and L3.
3P-4WY
Current measurements are performed on L1, L2 and L3 conductors.
Neutral current is calculated: iN = i1 + i2 + i3.
Power measurement is based on single phase wattmeter method.
Voltage measurements are performed between L1 and N.
Current measurements are performed on L1 conductor.
V1 = V2 = V3
U23 = U31 = U12= V1 x √3.
I1 = I2 = I3
Comments
Reference
Diagram
see § 3.6.1
see § 3.6.2
see § 3.6.3.1
see § 3.6.3.3
see § 3.6.3.5
see § 3.6.3.2
see § 3.6.3.4
see § 3.6.3.6
see § 3.6.3.7
see § 3.6.4.1
see § 3.6.4.2
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