Type SP-OS
Type ITC/PLTC Thermocouple Extension Cable
Multiple Shielded Pairs - Overall Shield - 105°C Rating
For Cable Tray Use
 

A  Solid Thermocouple Alloy Conductor

B  Okoseal Insulation

C  Tinned Stranded Copper Group Drain Wire

D  Aluminum/Synthetic Polymer Tape

E  Twisted Shielded Pairs

F  Communication Wire

G  Aluminum/Synthetic Polymer Tape

H  Tinned Stranded Copper Drain Wire

J   Rip Cord

K  Okoseal Jacket

Specifications
Conductors: Solid alloys per ANSI MC 96.1

Insulation: Flame-retardant Okoseal^® (PVC) per UL Standard 13 and 2250, 15 mils nominal thickness, 105°C temperature rating.

Conductor Identification: Pigmented insulation on individual conductors, negative conductor numerically printed for group identification.

Group Shield: Aluminum/Polyester taped overlapped to provide 100% coverage, and a solid 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; not included in single group cables.

Assembly: Pairs assembled with left-hand lay. Flame-retardant, non-wicking fillers included where required to provide a round cable.

Cable Shield: Aluminum/synthetic polymer tape overlapped to provide 100% coverage, and a 7-strand tinned copper drain wire, same size as the conductor.

Jacket: Color-coded, flame-retardant, low temperature Okoseal per UL Standard 13 and 2550. A rip cord is laid longitudinally under the jacket to facilitate removal.

Classification: UL Listed as Type ITC/PLTC - Instrumentation Tray Cable/Power Limited Tray Cable for use in accordance with Article 725 and 727 of the National Electrical Code.

The cables comply with UL 2250 and UL 13 for CL2 and CL3.

Applications
Okonite Type SP-OS (Pair/triad - Individual and Overall Shield) thermocouple extension cables are designed for use as instrumentation and process control cables 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.

Product Features

• Passes the UL 1581 and IEEE 383-1974 vertical tray flame tests.
• Sunlight Resistant & Oil resistant.
• UL listed for direct burial (4/C #20 AWG or 2/C #18 and larger).
• Individual pairs are numbered and color-coded for simplified hook-up.
• Individual pairs are numbered and color coded for simplified hook-up.
• Individual pairs or triads are completely isolated.
• 100% shield coverage for reduced electrostatic noise pick-up.
• Good external noise rejection.
• Excellent weathering characteristics.
• Communication wire included in each cable for voice communication during installation or instrument calibration.
• OSHA Acceptable.
•  Suitable for low temperature installation to -40°C.

SX  available upon request.

(1)  Special grade alloy conductors for JX and TX are available on special order.

 † Cross-sectional area for calculation of cable tray fill in accordance with NEC Section 318-8

Length Tolerance: Cut lengths of 1000 feet or longer are subject to a tolerance of ± 10%; less than 1000 feet ±15%.

ELECTRICAL SPECIFICATIONS
Per UL Standard 2250

Insulation Test Voltage (spark test)...............................5000 Volts ac
Dielectric Test Voltage................................1500 Volts ac for 15 sec.
Insulation Resistance Constant @60°F, minimum                                 
(natural material typical value).............................2000 Ohms-1000 ft.