This part of IEC 317 specifies requirements of tape
wrapped round copper winding wire of class 240.
The insulation consists of one or two wrappings of
aromatic polyimide tape.
Class 240 is a thermal class that requires a
temperature index of at least 240, and a heat shock
temperature of at least 260 °C.
The tape is coated on one or both sides with a
suitable adhesive, for instance, fluorinated ethylene
propylene. After wrapping, the tape is heat-sealed
to form a continuous and adherent sheath. Specific
requirements may be subject to contract.
The temperature in degrees Celsius corresponding
to the temperature index is not necessarily that at
which the wire is recommended to be used and this
will depend on many factors, including the types of
equipment involved.
The range of nominal conductor diameters covered
by this standard is:
1,600 mm up to and including 5,000 mm.
The nominal conductor diameters are given
in Table 1.
When reference is made to winding wire according
to this standard, the following information should
be given:
— reference to IEC 60317-43;
— diameter of the conductor;
— grade.
Example: 60317-43 IEC 2,000 mm grade A2
BS EN 60317-43:1997+A1:2010 history
1997BS EN 60317-43:1997+A1:2010 Specifications for particular types of winding wires - Aromatic polyimide tape wrapped round copperwire, class 240