A Bare Stranded Copper
Conductors
B Okoseal Insulation
C Tinned Stranded Copper Group
Drain Wire
D Double faced
Aluminum/Polyester Backed Tape Group Shield
E Twisted, Shielded
Pairs/Triads
F Communication Wire
G Double Faced
Aluminum/Polyester Backed Tape
H Tinned Stranded Copper Drain
Wire
J Rip Cord
K Inner Black Okoseal Jacket
L Galvanized Steel Wire Armor
M Outer Black Okoseal Jacket
Specifications
Conductors: Bare soft annealed copper, Class B, 7-strand concentric
per ASTM B-8.
Insulation: Flame-retardant Okoseal®
(PVC) per UL Standard 13 and 2250, 15 mils nominal thickness, 105°C
temperature rating.
Conductor Identification: Pigmented black and white in pairs,
black, red and white in triads; white conductor numerically printed for
group identification.
Group Shield: Aluminum/synthetic polymer backed tape overlapped to
provide 100% coverage, and a 7-strand tinned copper drain wire, two sizes
smaller than the conductor. All group shields are completely isolated from
each other.
Communications Wire: 22 AWG, solid, bare copper conductor, 12 mils
nominal flame-retardant Okoseal insulation, 105°C
temperature rating.
Assembly: Pairs or triads assembled with left-hand lay.
Flame-retardant, non-wicking fillers included where required to provide a
round cable.
Cable Shield: Aluminum/Polyester backed tape overlapped to provide
100% coverage, and a 7-strand tinned copper drain wire, same size as
conductor.
Inner Jacket: Black, flame-retardant, low temperature Okoseal per
UL Standard 13 and 2250. A rip cord is laid longitudinally under the
jacket to facilitate removal.
Wire Armor: A single serving of soft annealed galvanized steel
wires applied with a left-hand lay and 90% minimum coverage.
Outer Jacket: Black, flame-retardant, low temperature Okoseal per
UL Standard 13 and 2250.
Classifications: UL Listed as ITC/PLTC - Instrument Tray
Cable/Power Limited Tray Cable for use in accordance with Article 727 and
Article 725 of the National Electrical Code.
The cable core complies with UL 2250 and UL 13 for PLTC, CL2 and CL3.
Applications
Okonite single wire armor (SWA) Type SP-OS (Pair/triad - Individual and
Overall Shield) instrumentation cables are designed for use as
instrumentation, process control, in ITC non-classified or labeled
circuits up to 150 volts and 5 amps (750VA) and in Class 2 or 3
Power-Limited circuits where maximum shielding against external
interference is required, as well as shielding among groups, particularly
where the cable may be subject to abnormally high current or voltage
interference; indoors or outdoors; in wet or dry locations with conductor
operating
temperatures up to 105°C; in cable
trays; in raceways; supported by a messenger wire; under raised floors;
for direct burial. Suitable Class I, Division 2, Class II, Division 2, or
Class III, Division 2 hazardous locations. Also for use as power-Limited
fire protective signaling cable (FPL) per NEC Code 760.
The isolated individual shields over each pair, when properly grounded,
prevent crosstalk or capacitive coupling between adjacent pairs which
occurs with ac signals, particularly the pulse type.
The overall shield eliminates most of the static interference from the
electric field radiated by power cables and other electrical equipment.
The wire armor provides excellent longitudinal strength for use as a
messenger cable or for support in vertical drops (NEC Section 300-19) and
provides the physical protection against mechanical damage.
For dc service in wet locations X-Olene®
insulation is recommended.
Product Features
- Sunlight resistant..
- Excellent electromagnetic shielding.
- Oil resistant.
- Individual pairs or triads are completely isolated.
- Maximum noise rejection.
- Communication wire included in each cable for voice communication
during installation or instrument calibration.
- Excellent longitudinal strength
- Lower installed system cost than conduit or EMT systems.
- Excellent Cut-through resistance.
- Suitable for IEC/BS application.
- OSHA Acceptable.
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