Phase Order; A.5.1 Current Phase Order - AEMC PEL 102 User Manual

A.5 Phase Order
Every second, the PEL determines the phase order. If the phase order is incorrect, the red Phase Order indicator
PEL front panel blinks (see § 2.11). In addition, on the PEL 103, the Phase Order Incorrect icon
Display screen.
Setting the correct phase order for a distribution system requires that the current phase order, voltage phase order, and
current vs voltage phase order for that distribution system are all correct. Note that:
■
Phase order for voltage channels only is displayed when voltages are displayed on the LCD screen. The voltage
phase order is derived from the FFT analysis.
■
Phase order for current channels only is displayed when currents are displayed.
■
Phase order for voltage and current channels is displayed when the other screens are displayed.
■
Load or Source is set by the DataView PEL Control Panel.
In some distribution systems (such as DC) the phase order does not apply in every instance.
The following three tables show information for each distribution system for setting the correct current phase order, voltage
phase order, and current vs voltage phase order respectively.

A.5.1 Current Phase Order

Distribution
System
Single phase
(1-Phase 2-Wire)
Split phase
(1-Phase 3-Wire)
3-Phase 3-Wire ∆
[2 current sensors]
3-Phase 3-Wire Open-∆
[2 current sensors]
3-Phase 3-Wire Y
[2 current sensors]
3-Phase 3-Wire ∆
3-Phase 3-Wire Open-∆
3-Phase 3-Wire Y
3-Phase 3-Wire ∆
balanced
3-Phase 4-Wire Y
3-Phase 4-Wire Y
balanced
3-Phase 4-Wire Y 2½
Power & Energy Logger Model PEL 102 and PEL 103
Current Phase
Abbreviation
Order
1P-2W
1P -3W Yes
3P-3W∆2
Yes
3P-3WO2
3P-3WY2
3P-3W∆3
3P-3WO3
Yes
3P-3WY3
3P-3W∆B
3P-4WY Yes
3P-4WYB
3P-4WY2 Yes
No
ϕ (I2, I1) = 180° ± 30°
ϕ (I1, I3) = 120° ± 30°
No I2 current sensors
[ϕ (I1, I3), ϕ (I3, I2), ϕ (I2, I1)] = 120° ± 30°
No
[ϕ (I1, I3), ϕ (I3, I2), ϕ (I2, I1)] = 120° ± 30°
No
[ϕ (I1, I3), ϕ (I3, I2), ϕ (I2, I1)] = 120° ± 30°
appears on the LCD
Comments
on the
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