Siemens SIPROTEC 4 7XT71 Manual page 83

Table 3-2
Connection with terminal lugs
Inside diameter
Outer diameter
Conductor cross-sections
Tightening torque
Connection with solid wire or stranded-wire conductors with bootlace ferrule
Conductor cross-sections
Stripping length
Tightening torque
SIPROTEC 4/5, Injection unit 7XT71, Manual
C53000-B1174-C128-8, Edition 05.2020
Connection Data for Terminal Lugs and Conductors
4 mm
Max. 10 mm
1.0 mm
AWG 16 to AWG 14
1.8 Nm
0.5 mm
AWG 20 to AWG 14
9 mm to 10 mm
1.8 Nm
3.2 Connections of the Injection Units 7XT7100
Siemens recommends terminal lugs from Tyco
Electronics AMP:
Ring-type lugs: PIDG PN 320565-0
2 to 2.6 mm 2 ;
Fork-type lugs: PIDG PN 321233-0
Note:
2 to 2.6 mm 2 ;
The connector end of each individual conductor
must be inserted into the terminal chamber so
that it is drawn in when tightening the screw
terminal.
If you use stranded-wire conductors, you need
terminal lugs.
Dimensions and Connections
21