Siemens SIPROTEC 7SJ62 Instruction Manual page 35

Connections to
Current Terminals
Short-Circuit Links
7SJ62 Manual
C53000-G1140-C121-1
Direct Cable Connections: solid or stranded conductor with connector sleeve;
conductor with cross-section of 0.5 mm
Use copper wires only!
Maximum Tightening Torque: 1.3 ft-lb or 16 in-lb (1.8 Nm).
Ring or spade lugs may be used. To maintain proper isolation of the circuits, the lugs
must be insulated or insulating sleeves must be fitted to cover the exposed crimp
zones.
The following must be observed:
Connections with Cable lugs: inner diameter of lugs, 5 mm;
maximum outer width of lugs, 12 mm;
conductor with cross-section of 2.7 mm
Use copper wires only!
Cable lugs of series PIDG from AMP Co. are recommended, e.g.,
Ring cable lug: PIDG PN 130 171–0
Spade lug: PIDG PN 326 865–0
Direct Cable Connections: solid or stranded conductor with connector sleeve;
copper conductor with cross-section of 2.0 mm
Use copper wires only!
Maximum Tightening Torque: 2.0 ft-lb or 24 in-lb (2.7 Nm).
Short-circuit links are available for convenience in making terminal connections.
The links can be used to connect two terminals located on the same side of the termi-
nal block. Thus, if the 7SJ62 is the last device in the current transformer circuits, the
links provide a convenient way to terminate the circuits. The links are useful in con-
necting the neutral point of wye-connected VTs at the 7SJ62. The links can be useful
for other connections as well.
Each terminal can receive two links, one link and one cable lug, or one single wire.
The links meet the safety requirements for protection against electric shock.
There are two types of links, one for voltage connections and one for current connec-
tions. The links are illustrated in Figure 2-6.
Ordering information for the links is provided in Section A.1 in the Appendix.
Short-Circuit Links for
Voltage Connections
Figure 2-6 Short-circuit Links for Voltage Connections and Current Connections
Hardware and Connections
2 2
to 3.3 mm or AWG 20 to 12.
2 2
to 6.6 mm or AWG 13 to 9.
2 2
to 5.0 mm or AWG 14 to 10.
Short-Circuit Links for
Current Connections
2-7