Industrial Automation

SB 3700
Shielded multiconductor for RS 232 and RS 422 systems
Download PDF datasheet

Attributes

  • Double Shielding
  • Sequentially Marked
  • Fire-retardant
  • Electromagnetic interference protection
  • Computer Systems

Certifications

Applications

Fieldbus distribution circuits; suitable for underground and aerial raceways in RS 232 and RS 422 systems.

features

Temperature rating: 80ºC maximum.
Voltage rating: 300V.
Construction requirements: As per UL 13 Type PLTC.
Fire requirements: As per VW-1 - IEC30332-1.
Conductor requirements: As per ASTM B8 and ASTM B33.
NEC Code: Compliant with Art. 725 PLTC and Art. 800 Communications.

description

Conductor: Annealed tinned electrolytic copper, 7-wire stranding, class B.
Insulation: Thermoplastic compound.
Identification:

- 2 Conductors:        
- 3 Conductors:        
- 4 Conductors:        
- 5 Conductors or greater: White and numbered

Shield: Aluminium-polyester tape plus tinned-copper braid.
Sheath: Grey PVC; fire-resistant.
Stripping: Polyamide ripcord under the sheath.

optionals

Armour: Zinc-plated steel served-wire helical armour or aluminiun interlock armour plus grey PVC sheath;  fire-retardant; sunlight and hydrocarbon-resistant. 

See Technical Note # 8, "Wire armour properties"

installation

Assembly: Minimum bend radius is 7xOD (unarmoured versions) and 12xOD (armoured versions).
Maximum pulling tension: 5daN/sq mm on copper conductors. Wire-armoured cables can withstand 10daN/sq mm on the armour wires.
Assembly temperature: 5ºC or higher.

alternatives

Construction: The sheath material is LSZH-HFFR (Low  Smoke, Zero Halogen; Halogen-Free, Flame-Retardant). Compliant with IEC 60502-1, IEC 60754-1-2, IEC 61034, NES 713 and CEI 20-37 standards.

Tables

Dimensions, Weight & General Properties



Code N° of Cond. Gauge Electrical resistance Shield Velocity of propagation Mutual capacitance Outside diameter Weight
AWG Ohm/km VP(%) pF/m pF/ft mm kg/km
SB 3703 3 24 90.9 Aluminium / Polyester  tape + tinned copper braid (65% coverage) 78 40 12.2 6.0 47
SB 3704 4 6.3 52
SB 3707 7 7.4 71
SB 3710 10 8.9 92
SB 3712 12 9.2 100
SB 3715 15 10.5 127
SB 3719 19 10.9 142
SB 3725 25 12.9 189

pF/m = Mutual capacitance between conductors expressed in picoFarad per metre.
pF/ft = Mutual capacitance between conductors expressed in picoFarad per foot.

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