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Copper Clad Steel Wire Conductors based on ASTM B228 for grounding purpose
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Product Details
Brand Name | jinli | Place of Origin | China | |
Model Number | RY-X-001 |
Product Description
Certification:ROHS
Copper Clad Steel Wire Conductors based on ASTM B228 for grounding purpose
1. Scope
1.1 This specification covers bare concentric-lay-stranded
conductors made from bare round copper-clad steel wires for
general use for electrical purposes.
1.2 For the purpose of this specification, conductors are
classified as follows: Grade 40 HS, Grade 30 HS, and Grade 30
EHS.
1.3 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are in SI units.
2. Referenced Documents
2.1 The following documents of the issue in effect on the
date of material purchase form a part of this specification to the
extent referenced herein:
2.2 ASTM Standards:
B 227 Specification for Hard-Drawn Copper-Clad Steel
Wire2
B 354 Terminology Relating to Uninsulated Metallic Electrical
Conductors2
2.3 ANSI Standards:
C 42 Definitions of Electrical Terms3
2.4 National Institute of Standards and Technology:
NBS Handbook 100—Copper Wire Tables4
3. Ordering Information
3.1 Orders for material under this specification shall include
the following information:
3.1.1 Quantity of each size and grade;
3.1.2 Conductor size: approximate diameter in fractions of
an inch, or number and AWG size of individual wires (Section
7 and Table 1);
3.1.3 Grade (see 1.2 and Table 1);
3.1.4 Direction of lay of outer layer, if other than left-hand
(see 6.3);
3.1.5 When physical tests shall be made (see 8.2);
3.1.6 Package size (see 13.1);
3.1.7 Special package marking, if required (Section 12);
3.1.8 Lagging, if required (see 13.2); and
3.1.9 Place of inspection (Section 14).
3.2 In addition, Supplementary Requirements shall apply
only when specified by the purchaser in the inquiry, contract, or
purchase order for direct procurement by agencies of the U. S.
Government (S1, S2, and S3).
4. Material for Wires
4.1 The purchaser shall specify the grade of wire to be used
in the conductor.
4.2 Before stranding, the copper-clad steel wire shall meet
all the requirements of Specification B 227.
4.3 All wires in the conductor shall be of the same grade and
quality.
5. Joints
5.1 Joints or splices may be made in the finished individual
copper-clad steel wires composing concentric-lay-stranded
conductors, using more than three wires provided that such
joints or splices have a protection equivalent to that of the wire
itself and that they do not decrease the strength of the finished
stranded conductor below the minimum breaking strength
shown in Table 1. Such joints or splices shall be not closer than
50 ft (15 m) to any other joint in the same layer in the
conductor (Note 1).
NOTE 1—Joints or splices in individual copper-clad steel wires in their
finished size are made by electrical butt welding. Two types of joints are
used and are described as follows:
(a) Weld-Annealed Joints—After butt welding, the wire is annealed for
a distance of approximately 5 in. (127 mm) on each side of the weld. The
weld is then protected from corrosion with a snug fitting seamless copper
sleeve which extends at least 3⁄8 in. (9.5 mm) on each side of the weld and
which is thoroughly sealed to the wire with solder. The wall thickness of
the sleeve is at least 10 % of the radius of the wire.
This joint has a tensile strength of approximately 60 000 psi (415 MPa).
This is less than the strength of the individual wires, but an allowance is
made for this in the rated strength of the conductor as a whole. The
completed conductor when containing such joints is required to have the
full rated strength.
This type of joint is but slightly larger than the wire itself and is
applicable for 7, 12, and 19-wire stranded conductors.
(b) Compression-Weld Joints—Compression-weld joints differ from
weld-annealed joints in that the wire is not annealed after the butt-welding
operation but is reinforced with a hard-drawn, seamless, silicon-tin bronze
sleeve which is applied by means of a hydraulic compressor over the weld.
This sleeve is covered with solder so as to completely seal the ends.
Contact Us
- Changzhou Jinli Wire Corporation
- Contact nameEric Cheng Chat Now
- Phone86-519-85132095
- AddressNo. 8 Dai\'an Road Zouqu Town Wujin District, Zibo, Shandong
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