High-frequency stranded wires (standard)

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Technical information
Details

 

 

HF stranded wires made of enameled copper wires (with or without additional insulation)
Details

 

 

HF stranded wires round
Details

 

 

HF stranded wire
Details

 

 

Diameter of the enameled copper wires according to IEC 60317-0-1
Details

 

Art.-Nr.

Technical information

 

HF stranded wires are manufactured from several individual enameled copper wires by twisting in accordance with
DIN 46447. For larger cables, different bundles of strands are combined with each other
. With this type of stranded wire/cable, the exact position of the individual wires is not defined.
To be fully effective, none of the fine wires must be interrupted. All wires
must be stripped at the ends and connected to the circuits. In this way
all individual conductors are connected in parallel. The higher quality in the high-frequency range is based
on the increase in the cross-section effectively involved in the current flow, which is limited in the solid wire
by the following effects: Skin effect
charge carrier displacement due to the magnetic field of the individual conductor. At high frequencies, most of the current flows along or near the surface of the conductor due to this effect. The loss resistance can be reduced by increasing the conductivity, especially of the surface, or by connecting many thin individual conductors (stranded wires) in parallel. Proximity effect
Charge carrier displacement to one side of the conductor by the magnetic field of a coil made from it, or currents running back and forth on both sides of the conductor due to an external time-varying magnetic field. Twisting direction
When stranding high-frequency stranded conductors, there is also the twisting direction parameter. It describes the direction in which the strand is twisted/twisted. A basic distinction is made between the lay directions S and Z.

 

Calculation of the nominal outer diameter of strands

The nominal outer diameter produced from individual enameled copper wires with textile braiding is determined approximately by the following formula.

Where : D = Nominal diameter of the insulated conductor (in mm) k = Compression factor n = Number of individual enameled copper wires d = Nominal diameter of an individual enameled copper wire

Number of individual enameled copper wires Compression factor
from 3 to 6 1,25
7 1,15
from 8 to 12 1,25
16 1,26
20 1,27
from 25 to 400 1,28

 

Measuring the strand diameter The strand diameter is the diameter of the circle drawn around the rope cross-section.

Lay length
The lay length of a specific strand layer in a wire rope is the pitch of the helical strands in this layer. Short lay length: high flexibility, good grip of the individual strands, better roundness of the strand. Long lay length: stiffer, less good grip of the individual strands, better fill factor. The lay length can be set between 1 mm and 500 mm. Possible tolerances ± 10% and ± 20% (standard). The specialists at the factory determine the lay length without your specifications.

 

 

HF stranded wires made of enameled copper wires (with and without additional insulation)

 

Conductor
Bare copper wires Enameled copper wires
Copper cross-sections up to 2000 mm² up to 2000 mm²
Diameter of a single wire 0.032 to 4.00 mm = AWG 41 to AWG 6 0.032 to 4.00 mm = AWG 42 to AWG 6
Number of wires From at least 9 x 0.023 mm ( 0.24 mm diameter) to several tens of thousands
MW 79 -155°C IEC 60317-20
MW 82 -180°C IEC 60317-51
MW 77 – 180°C IEC 60317-23
MW 30 -180°C IEC60317- 8
MW 35 – 220°C IEC 60317-13
MW 16 – 220°C IEC 60317-7
others on request
Cable dimensions min. to max. From 2.20 x 1.50 mm to 40.00 x 25.00 mm
Additional
insulation
Taping: Kraft paper or crepe, Nomex®, polyester, fiberglass mesh, fiberglass/mica or other tapes up to 20 mm thick on request
Braiding: 1 or 2 layers of cotton, nylon, polyester, artificial silk or Nomex®

Braiding: cotton, nylon, polyester or Nomex®

Others: on request

 

Banding
Type Thermal class Thickness Designation
Coated paper
Kraft paper 105°C 50 to 125 μm K 50 – K 60 – K 80 – K 100 – K 125
Heat-treated kraft paper or Insuldur kraft paper 120°C 50 to 10 μm KI 50V – KI 80V – KI 100V
Kraft paper with increased mechanical strength 105 °C 50 and 75 μm M 50 – M 75
Kraft paper coated on both sides with epoxy in installment form 120 °C 90 μm KDD 9 0
Crepe kraft paper fine-creped
Coated on both sides with epoxy in installment form 105 °C 65 μm CDE 50
Coated on one side with epoxy in installment form 120 °C 50 and 80 μm KCI 12dn – KCI 22dn
Crepe paper
Crepe paper 80 μm 50 % creped 105 °C 315 μm KC 105
Crepe paper 120 μm 90 % finely creped 105 °C 370 μm KC 80
Crepe paper75 μm 100 % creped 120 °C 500 μm KCI 100V
Aramid paper
Aramid paper 180 °C 50 μm Nomex® 410-50
Aramid paper coated on one side with epoxy 180 °C 90 μm Nomex® 410-80E
Polyester
PET film 130 °C 8 to 50μm FP 08 – FP 12 – FP 19 – FP 23 – FP 36 – FP 50
Semi-conductive polyester tape 155 °C 180μm PSC 180
Mica paper
Mica paper on polyester film 155 °C 80 to 90 μm MFPE 80 – MFPE 90
Mica paper on polyester film coated with epoxy on one side 155 °C 80 to 90μm MFPE 80 – MFPE 90
Mica paper on glass fabric 155 °C 130μm MVT 130
Polyimide film
Polyimide film 155 °C 25, 40μm Kapton® 100HN
Polyimide film 220 °C 25, 40μm Apical®
Glass fabric tape 220 °C 100 to 200μm VT 100 – VT 130 – VT 200
Cotton tape 90 °C 180 and 300μ m JAC 2380/0.18 – JAC 2380/0.30
Wrapping or braiding with cotton yarn 90 °C 60 and 120 nm Cotton 60 nm Cotton 120 nm

 

 

HF stranded wires round

Dimensions:

Cross-sections up to 2,000 mm2 max. diameter 65 mm max. diameter of individual wires from 0.032 mm to 4.00 mm

 

 

HF stranded wire

For space reasons, it is sometimes necessary to profile strands to obtain a rectangular or square profile instead of a round one. The following must be taken into account here:

 

1 < Wide <3 Effective copper cross-section < 3
Height Theoretical copper cross-section

 

Please always specify which dimension (width or height) must be adhered to (before any additional insulation).

 

Dimensions: Cross-sections up to 470 mm2 max. profiling: 40 x 25 mm max.

 

 

 

Diameter of enameled copper wires according to IEC 60317-0-1

 

Nominal diameter Nominal copper cross-section AWG Grade 1 Grade 2
Diameter diameter
minimum maximum minimum maximum
[mm] [mm2] [Circ. Mils] [mm2] [inch] [mm2] [inch] [mm2] [inch] [mm2] [inch]
0,063 0,0031 6,1521 42 0,066 0.0260 0,076 .00299 0,073 .00287 0,083 0.00327
0,067 0,0035 6.9581 0,071 .00280 0,080 .00315 0,076 .00299 0,088 .00346
0,071 0,0040 7.8137 41 0,075 .00295 0,084 .00331 0,080 .00315 0,091 .00358
0,075 0,0044 8.7189 0,079 .00311 0,089 .00350 0,086 .00339 0,095 .00374
0,080 0,0050 9.9202 40 0,084 .00331 0,094 .00370 0,091 .00358 0,101 .00398
0,085 0,0057 11.1989 0,090 .00354 0,100 .00394 0,097 .00382 0,107 .00421
0,090 0,0064 12.5552 39 0,095 .00374 0,105 .00413 0,102 .00402 0,113 .00445
0,095 0,0071 13.9890 0,100 .00394 0,111 .00437 0,108 .00425 0,119 .00469
0,100 0,0079 15.5003 38 0,105 .00413 0,117 .00461 0,113 .00445 0,125 .00492
0,106 0,0088 17.4161 0,112 .00441 0,123 .00484 0,120 .00472 0,132 .00520
0,112 0,0099 19.4435 37 0,118 .00465 0,130 .00512 0,126 .00496 0,139 .00547
0,118 0,0109 21.5826 0,125 .00492 0,136 .00535 0,134 .00528 0,145 .00571
0,125 0,0123 24.2192 36 0,132 .00520 0,144 .00567 0,141 .00555 0,154 .00606
0,132 0,0137 27.0077 0,140 .00551 0,152 .00598 0,150 .00591 0,162 .00638
0,140 0,0154 30.3805 35 0,148 .00583 0,160 .00630 0,158 .00622 0,171 .00673
0,150 0,0177 34.8756 0,159 .00626 0,171 .00673 0,170 .00669 0,182 .00717
0,160 0,0201 39.6807 34 0,169 .00665 0,182 .00717 0,180 .00709 0,194 .00764
0,170 0,0227 44.7958 0,180 .00709 0,194 .00764 0,192 .00756 0,205 .00807
0,180 0,0254 50.2208 33 0,190 .00748 0,204 .00803 0,202 .00795 0,217 .00854
0,190 0,0284 55.9559 0,201 .00791 0,216 .00850 0,214 .00843 0,228 .00898
0,200 0,0314 62.0010 32 0,211 .00831 0,226 .00890 0,224 .00882 0,239 .00941
0,212 0,0353 69.6644 0,224 .00882 0,240 .00945 0,238 .00937 0,254 .01000
0,224 0,0394 77.7741 31 0,236 .00929 0,252 .00992 0,250 .00984 0,266 .01047
0,236 0,0437 86.3302 0,249 .00980 0,267 .01051 0,264 .01039 0,283 .01114
0,250 0,0491 96.8766 30 0,263 .01035 0,281 .01106 0,278 .01094 0,297 .01169
0,265 0,0552 108.8506 0,279 .01098 0,297 .01169 0,294 .01157 0,314 .01236
0,280 0,0616 121.5220 29 0,294 .01157 0,312 .01228 0,309 .01217 0,329 .01295
0,300 0,0707 139.5023 0,315 .01240 0,334 .01315 0,331 .01303 0,352 .01386
0,315 0,0779 153.8013 28 0,330 .01299 0,349 .01374 0,346 .01362 0,367 .01445
0,335 0,0881 173.9517 0,351 .01382 0,372 .01465 0,369 .01453 0,391 .01539
0,355 0,0990 195.3420 27 0,371 .01461 0,392 .01543 0,389 .01531 0,411 .01618
0,375 0,1104 217.9724 0,391 .01539 0,414 .01630 0,410 .01614 0,434 .01709
0,400 0,1257 248.0042 26 0,416 .01638 0,439 .01728 0,435 .01713 0,459 .01807
0,425 0,1419 279.9734 0,442 .01740 0,466 .01835 0,462 .01819 0,488 .01921
0,450 0,1590 313.8803 25 0,467 .01839 0,491 .01933 0,487 .01917 0,513 .02020
0,475 0,1772 349.7246 0,494 .01945 0,519 .02043 0,515 .02028 0,541 .02130
0,500 0,1963 387.5065 24 0,519 .02043 0,544 .02142 0,540 .02126 0,566 .02228