Checking The Wiring - ABB ZX0 Manual For Installation And Operation

Checking the wiring

Finally, check the earthing system of the voltage
transformer wiring in accordance with table
2.3.5.2.2.
Table 2.3.5.2.2: Earthing of terminals on the voltage transformer terminal board
Windings
Number Tap
1
1
1 ●
1 ●
2
2
2 ●
The terminal must be earthed via the earthing screw!
N
Earthing of the terminal in accordance with the circuit diagram!
n
Earthing screw fitted in accordance with the circuit diagram
dn
and figure 2.3.5.2.3 or 2.3.5.2.4!
When 2 windings plus a tap or 2 windings plus e-n winding, are
used, "N" is implemented by the works at the base plate of the
voltage transformer.
32 | Manual ZX0 HB 600 en - Revision 05
e-n winding
N
●
N
N
● N
N
●
1a
1a1
Terminals
a n
a n
a1 a2
a1 a2
1a 1n
1n 2a
1a2 1n
da dn
n
n da
2a 2n
2n da
2a1 2a2
dn
dn
2n