User Manual

EMpro - multifunctional energy measuring devices for DIN rail mounting
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PHOENIX CONTACT 109357_en_00
3.2.3 Grid types
The device is designed for connection to various network types in two-, three- or four-
conductor networks with symmetrical or asymmetrical load.
Where current sensors are concerned, a differentiation is made between current
transformers and Rogowski coils, depending on the device type.
The definitions of the grid types are as follows:
3.2.3.1 Current transformer (CT)
1PH-2W-1CT
Figure 3-7 One-phase network, two conductors, one current transformer
2PH-2W-1CT
Figure 3-8 Two-phase network, two conductors, one current transformer
1PH One-phase network
2W Two conductors
1CT One current transformer
Alternative:
1RC One Rogowski coil
V1 V2 V3 VN
6
L1
L2
L3
N
PE
L1´
L2´
L3´
N´
PE´
S
1
S
2
S
1
S
2
S
1
S
2
I
1
I
2
I
3
V1 V2 V3 VN
6
L1
L2
L3
N
PE
L1´
L2´
L3´
N´
PE´
S
1
S
2
S
1
S
2
S
1
S
2
I
1
I
2
I
3