SPEC 44 cableSPEC 44- Powerful with exceptional physical and electrical properties
SPEC 44 - proven cable insulation system easy to handle
The Spec 44 line features double-walled isolation that combines the extraordinary physical and electrical properties of molecularly cross-linked polyalkenes with the outstanding mechanical and chemical properties of molecular cross-linked polyvinyl fluoride (PVDF). The result is a line insulation system that has a temperature range up to 150 ° C, a small diameter, light weight, solder iron resistance and resistance to most, solvents, fuels and lubricants.
The Spec 44 cables and cables are highly flame retardant, infusible and cold flow resistant. They are mechanically strong, easy to handle and easy to process with conventional tools. In airframe wiring, Spec 44 designs provide advanced replacement solutions for PVC / Nylon and glass-braided cables. Spec 44 leads are available in a wide range of sizes - both stranded and solid, with standard designs of tinned and silvered copper or high strength copper alloy.
- -65 ° C to + 150 ° C
- Double-walled construction
- Rated voltages 600 V, 1000 V, 2500 V
- Small diameter, low weight
- Low smoke and low corrosive gas evolution
- Resistant to most solvents and chemicals
- Resistant to electric arcing
Spec 44 Lines and Cables - nominal size, ladder design and weights
Lines / twisted pairs
| 44A011X (600 V) switch cable | 44A021X (1000V) switch cable | 44A031X (2500 V) switch cable | 44A081X (600V) aviation line | 44A012X (600 V) twisted pair | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Conductor size (AWG) | Conductor construction (nx AWG (mm)) | Cross section (mm²) | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. |
| 30 | 7/38 (0,10) | 0,06 | 0,68 | 1,06 | 0,81 | 1,34 | - | - | - | - | 1,37 | 2,38 |
| 28 | 7/36 (0,13) | 0,09 | 0,76 | 1,43 | 0,89 | 1,64 | - | - | - | - | 1,52 | 3,13 |
| 26* | 19/38 (0,10) | 0,15 | 0,86 | 2,08 | 1,02 | 2,38 | 1,35 | 3,13 | 1,22 | 2,98 | 1,73 | 4,31 |
| 24 | 19/36 (0,13) | 0,25 | 1,02 | 2,98 | 1,17 | 3,57 | 1,44 | 4,46 | 1,37 | 3,87 | 2,03 | 6,39 |
| 22 | 19/34 (0,16) | 0,40 | 1,19 | 4,46 | 1,37 | 5,20 | 1,75 | 6,40 | 1,57 | 5,65 | 2,38 | 9,37 |
| 20 | 19/32 (0,20) | 0,60 | 1,40 | 6,70 | 1,57 | 7,59 | 1,98 | 9,08 | 1,78 | 8,04 | 2,79 | 13,98 |
| 18 | 19/30 (0,25) | 1,00 | 1,65 | 10,12 | 1,85 | 11,46 | 2,23 | 12,95 | 2,03 | 11,91 | 3,30 | 21,27 |
| 16 | 19/29 (0,29) | 1,25 | 1,83 | 12,80 | 2,06 | 14,58 | 2,46 | 16,22 | 2,26 | 14,73 | 3,65 | 26,93 |
| 14 | 19/27 (0,36) | 2,00 | 2,26 | 19,64 | 2,49 | 21,88 | 2,92 | 24,10 | 2,74 | 22,17 | 4,52 | 42,25 |
| 12 | 37/28 (0,32) | 3,00 | 2,74 | 30,06 | 2,97 | 32,89 | 3,32 | 36,01 | 3,20 | 32,59 | 5,48 | 65,91 |
| 10 | 37/26 (0,40) | 5,00 | 3,28 | 46,28 | 3,71 | 52,98 | 4,09 | 54,32 | 3,94 | 52,08 | - | - |
| 8 | 133/29 (0,29) | 8,30 | - | - | 5,23 | 91,97 | 96,20 | 96,73 | 92,94 | 93,46 | - | - |
| Conductor Construction for 44A0211-26: Conductor Assembly 7/34 (0.16mm) | ||||||||||||
Shielded and sheathed cables
| 44A111X (600 V) 1 conductor | 44A121X (1000 V) 1 conductor | 44A181X (600 V) 1 conductor | 44A112X (600 V) 2 conductors | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Conductor size (AWG) | Conductor construction (nx AWG (mm)) | Cross section (mm²) | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. |
| 30 | 7/38 (0,10) | 0,06 | 1,47 | 5,21 | - | - | - | - | 2,23 | 8,20 |
| 28 | 7/36 (0,13) | 0,09 | 1,55 | 5,80 | - | - | - | - | 2,38 | 9,40 |
| 26 | 19/38 (0,10) | 0,15 | 1,57 | 6,84 | 1,73 | 6,85 | - | - | 2,59 | 12,05 |
| 24 | 19/36 (0,13) | 0,25 | 1,83 | 8,63 | 1,98 | 9,67 | 2,26 | 11,76 | 2,99 | 16,82 |
| 22 | 19/34 (0,16) | 0,40 | 2,01 | 10,71 | 2,24 | 12,35 | 2,57 | 15,48 | 3,35 | 21,57 |
| 20 | 19/32 (0,20) | 0,60 | 2,26 | 14,73 | 2,54 | 17,41 | 2,77 | 19,19 | 3,76 | 27,97 |
| 18 | 19/30 (0,25) | 1,00 | 2,62 | 20,68 | 2,82 | 22,62 | 3,02 | 24,11 | 4,32 | 38,24 |
| 16 | 19/29 (0,29) | 1,25 | 2,79 | 24,55 | 3,02 | 26,64 | 3,25 | 28,13 | 4,67 | 44,94 |
| 14 | 19/27 (0,36) | 2,00 | 3,22 | 34,08 | 3,45 | 36,16 | 3,73 | 38,69 | 5,53 | 64,28 |
| 12 | 37/28 (0,32) | 3,00 | 3,70 | 47,77 | 4,14 | 49,56 | 4,19 | 52,38 | 6,50 | 91,51 |
Spec 44 cables and cables - special cables
Def Stan 61-12 Part 18 Issue 3 Type 1
Danger- limiting switching cable in case of fire (flexible)
| Conductor size (AWG) | Conductor structure (n x mm) | Ø over insulation (mm) | Weight (g/m) max. | Raychem order code |
|---|---|---|---|---|
| 28 | 7/0,12 | 0,76 | 1,50 | 44M9976-28-* |
| 26 | 19/0,10 | 0,89 | 2,88 | 44M9976-26-* |
| 24 | 19/0,12 | 1,02 | 3,45 | 44M9976-24-* |
| 22 | 19/0,15 | 1,17 | 4,90 | 44M9976-22-* |
| 20 | 19/0,20 | 1,47 | 7,56 | 44M9976-20-* |
| 18 | 19/0,25 | 1,73 | 10,42 | 44M9976-18-* |
| 16 | 19/0,30 | 1,96 | 16,50 | 44M9976-16-* |
| 14 | 37/0,25 | 2,31 | 20,73 | 44M9976-14-* |
| 12 | 37/0,30 | 2,64 | 27,08 | 44M9976-12-* |
| * Color coding appendix: see labeling system. Single and multi-core shielded and sheathed cables are available using Type 1 components. | ||||
Flexible, fine-stranded ladder construction
| 44A9083 (600 V) Switching cable | 44A9089 (600 V) 2 conductors, shielded | |||||
|---|---|---|---|---|---|---|
| Conductor size (AWG) | Conductor construction (n x AWG (mm)) | Cross section (mm²) | Outer Ø (mm) | Weight (g/m) max. | Outer Ø (mm) | Weight (g/m) max. |
| 22 | 37/38 (0,10) | 0,30 | 1,12 | 3,9 | 3,18 | 19,2 |
| 21 | 37/37 (0,11) | 0,38 | 1,19 | 4,6 | 3,33 | 21,3 |
| 20 | 37/36 (0,13) | 0,50 | 1,30 | 5,8 | 3,53 | 24,6 |
| 19 | 37/35 (0,14) | 0,59 | 1,40 | 6,8 | 3,73 | 27,5 |
| 18 | 37/34 (0,16) | 0,75 | 1,52 | 8,6 | 3,99 | 32,1 |
| 17 | 37/33 (0,18) | 1,00 | 1,65 | 10,4 | 4,29 | 37,7 |
| 16 | 37/32 (0,20) | 1,20 | 1,83 | 13,2 | 4,65 | 44,6 |
| 15 | 37/31 (0,23) | 1,50 | 2,03 | 17,0 | 5,05 | 53,9 |
| 14 | 37/30 (0,25) | 1,88 | 2,26 | 20,7 | 5,51 | 63,4 |
| 13 | 37/29 (0,29) | 2,50 | 2,54 | 27,1 | 6,07 | 78,6 |
Specifications and approvals
| registration office | Industry | Military / Aerospace | TE/Raychem |
|---|---|---|---|
| NASA Preferred Product List | Lloyds Register of Shipping | Def Stan 61-12 Part 26 | Spec 44 |
| Civil Aviation Authority Accessory Approval E11623 | Def Stan 61-12 Part 18 Type 1 flexible (maintenance) | ||
| TDE 74/P/74 and TDE 75/R/6 (British Rail) | SAE AS-81044 (MIL-W-81044) NEMA WC-27500 (MIL-C-27500) | ||
| VG 95218 part 20, 21, 22, 23 and 1000 | |||
| NATO supply numbers exist for most standard designs. | |||
| MSV34401 |
Properties of Spec 44
| Operating temperature range | -65 °C to +150 °C |
|---|---|
| Rated voltage (thin-walled) | 600 V |
| Rated voltage (thick-walled) | 2500 V |
| Tensile strength and elongation at break of the insulation | 28 N/mm², 230 % |
| Notch cut resistance, 0.05 mm cutting edge, 0,05 mm Schneide | passed |
| Soldering iron resistance (370 ° C, 1 minute) | passed |
| Shrinkage, 300 ° C | < 1 % |
| cold resistance | -65 °C |
| Withstand voltage (thin-walled) | 2500 V |
| Insulation resistance (+20 ° C) | 1500 MΩ *km |
| Resistance fuels, oils, solvents | passed |
Physical Properties
Small diameter
The Spec 44 cable with a rated voltage of 600 V has a wall thickness of 0.19 mm nom. 0.25 mm and Industry Military / Aerospace Lloyd's Register of Shipping 0.38 mm for equivalent PTFE and PVC cables in MIL-W-16878 and MIL-W-22759 or BS 3G210.
Low weight
Due to the low wall thickness and the low density of the materials considerable weight savings are achieved compared to similar PTFE lines with the same rated voltage. Eg: A 44A0111-AWG22 switch cable weighs 4.45 g / m max. An AWG22 PTFE switching cable according to MIL-W-22759 weighs 5.54 g / m max.
General processing
The flexibility of the Spec 44 cable and the ease with which it can be laid make it the easiest to install high performance cable. The stripping is done with conventional stripping tool. The tinned conductor, which is mainly used, is easy to solder or crimp. The insulation can be easily printed and requires no etching treatment before casting.
lengths
Spec 44 cables are available in long lengths and can be supplied for processing with automatic cutting and stripping machines.
Danger-limiting behavior In case of fire
| Federal Aviation Reg FAR-25 | passed | |
|---|---|---|
| flammability | BS EN 50265 vertical flame treatment | passed |
| S424 14751 (Swedish fireplace) | passed | |
| NFC 32070 (2) (French fireplace) | passed | |
| lEC 60332 Teil 3 (Cable ladder) | passed | |
| Smoke and toxicity index | Smoke index, Def. Stan 61-12 (18) | 6 /m |
| Toxicity Index. Def Stan 61-12 (18) | 0,8 /m | |
| Oxygen Index, BS EN 1S0-4589 Part 2 and Part 3 | 30 % oxygen | |
| Temperature index, NES 715 | >300 °C |
environmental properties
Operating temperature range
Spec 44 cables and cables can be used in temperature ranges from -65 ° C to +150 ° C and for a short time at temperatures up to +300 ° C. Thermal aging tests are performed periodically at temperatures of +200 ° C (168 h) and +300 ° C (6 h). There is no shrinkage of the cable insulation despite repeated heat cycles.
Chemical resistance
Molecularly crosslinked Spec 44 leads are highly resistant to many acids, bases, hydrocarbon based solvents, fuels, lubricants, water, many rocket propellants and oxidizers.
Mechanical properties
Spec 44 cables offer a better notch cut resistance than some cables with larger wall thicknesses. A 600V 44A0111 shunt with 0.19mm wall thickness has a 40% higher value than a 600V PTFE shunt with 0.25mm wall thickness.
Soldering iron / overload resistance
Due to the molecular crosslinking of the insulation, cables according to Spec 44 are infusible even at high temperatures. As a result, this line is very resistant to prolonged contact with soldering iron and has optimum protection in the event of overloading, while thermoplastic insulation would melt.
cold flow
The molecular crosslinking of the Spec 44 pipe prevents the cold flow of the insulation - a recognized problem for materials without cross-linking.
Low outgassing
For space applications, special Spec 44 constructions with low outgassing properties are available for use in high vacuum and high temperatures.
nominal voltage
The rated voltages for Spec 44 leads are 600 V for 0.19 mm wall thickness, 1000 V for 0.28 mm wall thickness and 2500 V for 0.48 mm wall thickness.
Resistance to arcing
The Spec 44 insulation provides complete resistance to arcing under dry and wet conditions at aircraft operating voltages.