3.
Guide the cables on the secondary side through the cable entry on
the underside of the terminal box, Fig. 10.
WARNING
Thermal stresses due to high contact resistances
The transformer can be thermally overloaded by connecting
cables whose cross-sections or materials are not enough
electrically load-bearing or which are uneven or not properly
screwed at the contact point.
» Only use connecting cables whose cross-sections are
sufficiently dimensioned to withstand the secondary
thermal short-time rated current.
Use polyester line pipes to prevent creepage current traces,
especially in areas with high air pollution. An internal metal
shield ensures that the surface currents can flow off unhin‐
dered.
4.
Connect the secondary cables to the secondary terminals (M6) in
the terminal box of the transformer (Fig. 10,
Ò
Tightening torque:
max. 5 Nm).
DANGER
High voltage at open secondary terminal
If the secondary windings of the current transformer are
operated in open condition, there is risk of death due to high
voltage.
» Never operate the secondary windings without burden.
» Always load the secondary windings with the specified
burden or short-circuit it.
The start of each secondary winding of the current trans‐
former has been earthed in the terminal box at the factory.
ICO 72,5...245
USER MANUAL
How to use this device as intended
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