9.7.2. Direct Connected: 4-wire asymmetrical (VDE) direct connection configuration
Terminal Phase Function Terminal Phase Function
1 1 I1 - Phase 1 in 7 3 I3- Phase 3 in
2
No connection 8
No connection
3 1 I1 - Phase 1 out 9 3 I3 - Phase 3 out
4 2 I2 - Phase 2 in 10 N Un - Neutral in
5
No connection 12 N Un - Neutral out
6 2 I2 - Phase 2 out
Typical wiring illustrated below: