Siemens SIPROTEC 7SJ80 Product Information

16 SIPROTEC 7SJ80 / 7SK80 V4.60, Product Information
E50417-K1150-C342-A6, Edition 07.2010
Figure 7 Current transformer connection
As single wires, solid conductors as well as stranded conductors with con-
ductor sleeves can be used. Up to two single wires with identical cross-
sections can be used per connection.
Alternatively, short circuit links (Order no. C53207-A406-D193-1) can be
used for vertically arranged terminal points. If short circuit links are used,
only ring lugs are permitted.
When connecting single wires, the following cross-sections are allowed::
Mechanical Requirements
The fixing elements and the connected components are designed for the
following mechanical requirements:
Wire cross-section: AWG 14-10
(2.0 mm
2
to 5.2 mm
2
)
Conductor sleeve with plastic sleeve L = 10 mm (0.39 in) or
L = 12 mm (0.47 in)
Stripping length:
(when used without conductor sleeve)
15 mm (0.59 in)
Only solid copper wires
may be used.
Permissible tightening torque at the terminal
screw
2.7 Nm (23.9 lb.in.)
With solid conductors the
allowed maximum tighte-
ning torque is 2 Nm.
Permissible traction per connected conduc-
tor
80 N based on IEC 60947-
1 (VDE 660, Part 100)

Siemens SIPROTEC 7SJ80 Specifications

General

Rated Frequency	50/60 Hz
Rated Current	1 A / 5 A
Operating Temperature	-25°C to +55°C
Storage Temperature	-40°C to +70°C
Current Transformer Inputs	4
Application	Protection of feeders, motors, transformers, and generators
Rated Voltage	100-240 V AC/DC
Communication Protocols	IEC 61850, Modbus, DNP3, IEC 60870-5-103
Display	Graphical LCD
Mounting	Flush mounting
Protection Functions	Overcurrent, Earth fault
Communication Interfaces	Ethernet, RS485
Housing	Plastic
Weight	Approx. 1.5 kg