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Technical Data
12.1 General Device Data
Tightening Torques for Terminal Screws
Type of Line
Stranded wires with ring-
type lug
Stranded wires with boot-
lace ferrules or pin-type
lugs
Solid conductor, bare
(2 mm
2
)
Bare stranded wire
NOTE
i
i
For current and voltage terminals, the maximum speed of the tool must not exceed 640 rpm.
NOTE
i
i
Use copper cables only.
Torques for Other Screw Types
Screw Type
M4 x 20
M4 x 8
M2.5 x 6
Countersunk screw, M2.5 x 6
Countersunk screw, M2.5 x 8
Collar screw, M4 x 20
800
Current Terminal
2.7 Nm
2.7 Nm
2.0 Nm
Not permitted
Voltage Terminal with
Spring-Loaded Terminals
No ring-type lug
1.0 Nm
1.0 Nm
1 Nm
Torque
1.2 Nm
1.2 Nm
0.39 Nm
0.39 Nm
0.39 Nm
0.7 Nm
SIPROTEC 5, Merging Unit 6MU85, Manual
C53000-G5040-C074-1, Edition 01.2020
Voltage Terminal with
Screw Connection
No ring-type lug
0.6 Nm
–
0.6 Nm
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