Connections Of The Voltage Terminals - Siemens 7SK80 Manual

Mounting and Commissioning
3.1 Mounting and Connections
Alternatively jumpers (Order No. C53207-A406-D193-1) can be used with terminal points in a stacked arrange-
ment. When using jumpers, only ring lugs are allowed.
When connecting single wires, the following cross-sections are allowed:
Cable cross-section:
Connector sleeve with plastic collar
Stripping length:
(when used without conductor sleeve)
Mechanical Requirements
The fixing elements and the connected components are designed for the following mechanical requirements:
Permissible tightening torque at the terminal screw
Permissible traction per connected conductor

3.1.2.3 Connections of the Voltage Terminals

Fixing Elements
The fixing elements for the voltage transformer connection are part of the voltage terminal (housing side). They
have a stress-crack- and corrosion-resistant alloy. The head shape of the terminal screw allows for using a flat
screwdriver (4.0 mm x 0.8 mm / 0.16 in x 0.031 in) or a crosstip screwdriver (PZ1). PZ1 is recommended.
Cable Lugs and Wire Cross-sections
The connection mode available is the connection as single cable. As single cables, solid conductors as well as
stranded conductors with or without conductor sleeves can be used. We recommend using twin cable end
sleeves when connecting two single cables. We recommend the twin cable end sleeves of the series PN 966
144 from Tyco Electronics.
When connecting single cables, the following cross-sections are allowed:
Cable cross-sections:
Connector sleeve with plastic collar
Stripping length:
(when used without conductor sleeve)
With terminal points lying one below the other you may connect single conductors and jumpers (Order No.
C53207-A406-D194-1) together. Please make sure that neighboring jumpers are built in/connected alternately.
Mechanical Requirements
The fixing elements and the connected components are designed for the following mechanical requirements:
Permissible tightening torque at the terminal screw
Permissible traction per connected conductor
310
2
AWG 14-10 (2.0 mm to 5.2 mm
L = 10 mm (0.39 in) or L = 12 mm (0.47 in)
15 mm (0.59 in)
Use exclusively solid copper conductors.
2.7 Nm (23.9 lb.in)
With solid conducters the allowed
maximum tighting torque is 2 Nm
80 N based on IEC 60947-1 (VDE 660, Part
100)
2
AWG 20-14 (0.5 mm to 2.0 mm
L = 10 mm (0.39 in) or L = 12 mm (0.47 in)
12 mm (0.47 in)
Only copper cables may be used.
1.0 Nm (8.85 lb.in)
50 N based on IEC 60947-1 (VDE 660, Part
100)
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
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