Siemens SIPROTEC 7SJ80 Produktinformation Seite 15

Connections of the Current Terminals
Fixing Elements
The fixing elements for the transformer connection are part of the current
terminal (housing side). The head shape of the terminal screw allows for
using a flat screwdriver (5.5 mm x 1.0 mm / 0.21 in x 0.039 in) or a crosstip
screwdriver (PZ2). PZ2 is recommended.
Cable lugs and Wire Cross-sections
There are two connection options: the connection of single wires and the
connection with a ring lug. Only copper wires may be used.
We recommend ring lugs with the following dimensions:
Figure 6 Ring lug
For complying with the required insulation clearances, insulated ring lugs
have to be used. Otherwise, the crimp zone has to be insulated with cor-
responding means (e.g. by pulling a shrink-on sleeve over).
We recommend ring lugs of the PIDG range from Tyco Electronics.
Two ring lugs can be mounted per connection.
SIPROTEC 7SJ80 / 7SK80 V4.60, Product Information
E50417-K1150-C342-A6, Edition 07.2010
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