7 Electrical Connection
15 / 30
AC wiring procedure steps:
The grid connection is established by using three-core wire (L, N, and PE, as per FIG. 7-5).
FIG. 7-5 AC Connector
The AC connector is made of four components: pressure screw, sealing ring, threaded
sleeve, and socket element.
Pressure Screw Sealing Ring Threaded Sleeve Socket Element
FIG. 7-6 Structure of AC Connector
AC connectors have two types, EXCEEDCONN type or DEVALAN type, procedure steps as
below:
1) Strip the cable’s jacket, and then adjust the relative length of L, N and PE cables, to
make the length of PE cable is at least 5mm longer than L and N ones, as per FIG. 7-7.
30.0
25.0
PE
N
L
50.0
45.0
PE
N
L
EXCEEDCONN type DEVALAN type
FIG. 7-7 Adjust the Cable Length
2
）
When using flexible cables, the conductor must be connected with suitable core end
ferrules according to DIN 46228-4, as per FIG. 7-8.
8.0
L
N
PE
FIG. 7-8 Crimp the Three-core’s Ferrule
