THE OKONITE COMPANY
Product Data
Section 2: Sheet 42

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Okoguard®-Okosheath-TS®

Medium Voltage Power Cable
5/8kV Shielded Power Cable
One Okopact (Compact Stranded) Copper Conductor/90°C Rating
5kV-133% or 8kV-100% Insulation Level — For Class 1E Nuclear Plant Use

 

A Conductor-Stranded Copper

B Strand Screen-Extruded semi- conducting EPR

C Insulation-Okoguard

D Insulation Screen-Extruded semi- conducting EPR

E Shielding-Copper Tape

F Cable Tapes

G Jacket-Okosheath-TS 


Insulation
Okoguard is Okonite’s registered trade name for its exclusive ethylene-propylene base, thermosetting compound, whose optimum balance of electrical and physical properties is unequaled in other solid dielectrics. The clean red color of Okoguard is the result of an evolutionary development in ethylene-propylene rubber compounding to gain greater dependability of the electrical characteristics. The triple tandem extrusion of the screens with the insulation provides optimum electrical characteristics.

Jacket
The Okosheath-TS jacket on this cable is a vulcanized chlorinated polyethylene based compound which is mechanically rugged, flame, radiation, and oil resistant.

Applications
Okoguard Shielded-Okosheath-TS power cables are recommended for use as feeder circuits in utility generating plants, in distribution applications and for primary circuits in all industrial and commercial installations. These cables may be installed in wet or dry locations, indoors or outdoors (exposed to sunlight), in any raceway or underground duct, directly buried, or messenger supported. 

Specifications
Conductor: Annealed uncoated compact copper Class B stranded per ASTM B-496.
 
Strand Screen: Extruded semiconducting EPR strand screen. Meets or exceeds the electrical and physical requirements of ICEA S-97-682, AEIC CS8.
 
Insulation: Meets or exceeds electrical and physical requirements of ICEA S-97-682, AEIC CS8.

Insulation Screen: Extruded semiconducting EPR insulation screen applied directly over the insulation. Meets or exceeds electrical and physical requirements of ICEA S-97-682 and CS8.

Shield: Coated 5 mil copper tape helically applied with 25% nominal overlap.

Jacket: Meets or exceeds electrical and physical requirements of ICEA S-93-639 for chlorinated polyethylene jackets and UL 1072.

Product Features  

  • Qualified as Class 1E cable.
  • Okoguard cables meet or exceed all recognized industry standards (AEIC, NEMA/ICEA, IEEE).
  • 90°C continuous operating temperature.
  • 130°C emergency rating.
  • 250°C short circuit rating.
  • Cables meet the IEEE 383/IEEE 1202 flame test requirement.
  • Quality Assurance traceability
  • Excellent corona resistance.
  • Radiation resistant.
  • Screens are clean stripping.
  • Exceptional resistance to “treeing”.
  • Moisture resistant.
  • Resistant to most oils, acids, and alkalies.

Okoguard Insulation: 115 mils (2.92mm), 5kV-133% or 8kV-100% Insulation Level
1-Catalog Number
2-Conductor Size AWG or kcmil
3-Conductor Size -mm2
4-Approx. Dia. over Insulation (in.)
5-Approx. Dia. over Screen (in.)
6-Jacket Thickness - mils
7-Jacket Thickness - mm
  8-Approx. O.D. - Inches
  9-Approx. O.D. - mm
10-Approx. Net Weight lbs./1000’
11-Approx. Ship Weight lbs./1000’
12-Ampacities (1) Conduit in Air
13-Ampacities (2) Underground Duct
14-Conduit Size Inches (3)*
1 2 3 4 5 6 7 8 9 10 11 12 13 14

114-23-2627
114-23-2629

2/0
3/0

67.4
85.0

0.65
0.69

0.71
0.75

80
80

2.03
2.03

0.92
1.01

23.4
25.7

762
936

817
1003

210
239

234
266

3
3

114-23-2631
114-23-2633
114-23-2637

4/0
250
350

107.0
127.0
177.0

0.75
0.79
0.89

0.81
0.85
0.95

80
80
80

2.03
2.03
2.03

1.06
1.12
1.21

26.9
28.4
30.7

1100
1253
1611

1167
1333
1711

272
300
362

302
331
398

3
3
3 1/2

114-23-2643
114-23-2649
114-23-2651

500
750
1000

253.0
380.0
507.0 

1.01
1.19
1.35

1.07
1.27
1.42

80
80
80

2.03
2.03
2.03

1.35
1.52
1.67

34.3
38.6
42.4

2156
3032
3880

2256
3209
4057

451
552
662

479
580
683

4
5
5


Ampacities are from IEEE Std 835-1994 "IEEE Standard Power Cable Ampacities Tables". Values should be determined for the intended installation conditions.

(1) Per table "5 to 15 kV Shielded Single Conductors Extruded Dielectric Power Cable in Conduit in air 90°C conductor 40°C ambient air" No Sun No Wind.

(2) Per table "5 to 15kV Shielded Single Conductor Extruded Dielectric Power Cable in Underground Duct Bank - Triplexed - Single Circuit 25°C Earth Ambient" 90 rho 100% LF.

NOTE: For ampacities for cables installed in tray, see ICEA P-54-440 "Ampacities of Cables Installed in Cable Trays'

(3) Recommended size of rigid or nonmetallic conduit for three conductors based on 40% maximum fill.

*The jam ratio, conduit I.D. to cable O.D. should be checked to avoid possible jamming.

A/06100242 

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