THE OKONITE COMPANY Product Data
 Section 2: Sheet 6
 

COMPACT STRAND
CONSTRUCTION

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Okoguard®-Okobond® Type MV-105
5/8kV Okobond Shielded Power Cable
One Okopact® (Compact Stranded) Copper Conductor 105°C Rating
5kV-133% or 8kV-100% Insulation Level
For Direct Burial & Conduit Use
UL 

A Uncoated, Okopact (Compact Stranded) Copper Conductor

B Strand Screen-Extruded Semiconducting EPR

C Insulation-Okoguard EPR

D Insulation Screen-Extruded Semiconducting EPR

E Shield-6 mil Okobond Copper Tape

F Jacket-Okolene


Insulation
Okoguard is Okonite's registered trade name for its exclusive ethylene-propylene rubber (EPR) based, thermosetting compound, whose optimum balance of electrical and physical properties is unequaled in other solid dielectrics. Okoguard insulation, with the distinctive red color and a totally integrated EPR system, provides the optimum balance of electrical and physical properties for long, problem free service. The triple tandem extrusion of the screens with the insulation provides optimum electrical characteristics.


Shield
A 6 mil copper longitudinal corrugated Okobond shield is applied over the extruded semiconducting insulation screen with a sealed overlap to make the cable core impervious to moisture penetration. The tape is copolymer coated to provide a bond at the overlap and to the outer jacket. This construction provides a substantially lower shield resistance compared to a tight helically applied copper tape. The tape shield resistance is also extremely stable for the life of the cable.

Jacket
The Okolene® jacket on this cable is a polyethylene compound which is mechanically rugged; oil and moisture resistant. The outer jacket is firmly bonded to the corrugated copper shield for a moisture barrier.

Applications
Okoguard shielded Okobond Type MV-105 power cables are recommended for use by electric utilities and industrial operations for distribution circuits, and for feeders or branch circuits in industrial and commercial installations. Type MV cables may be installed in wet or dry locations, indoors or outdoors (exposed to sunlight), in underground duct, directly buried if installed in a system with a grounding conductor in close proximity that conforms with NEC Section 250.4(A)(5), or messenger supported in industrial establishments and electric utilities. Okoguard-Okobond is especially suited for underground applications in duct or direct burial where it is subject to excessive water.

Specifications
Conductor: Annealed uncoated copper, compact stranded per ASTM B-496.

Strand Screen: Extruded semiconducting EPR strand screen. Meets or exceeds electrical and physical requirements of ICEA S-93-639/NEMA WC74 & S-97-682, AEIC CS8 and UL 1072.

Insulation: Meets or exceeds electrical and physical requirements of ICEA S-93-639/NEMA WC74 & S-97-682, AEIC CS8 and UL 1072.

Insulation Screen: Extruded semiconducting EPR insulation screen applied directly over the insulation. Meets or exceeds electrical and physical requirements of ICEA S-93-639/NEMA WC74 & S-97-682, AEIC CS8 and UL 1072.

Shield: 6 mil longitudinal corrugated, copolymer coated copper shield with a 0.25" overlap.

Jacket: Meets or exceeds electrical and physical requirements of ICEA S-93-639/NEMA WC74 & S-97-682 and UL 1072 for polyethylene jackets. UL Listed as Type MV-105, sunlight resistant in accordance with UL 1072. Okoguard-Okobond cables are also available with 5, 25, 35 and 69kV ratings.

Product Features

  • Triple tandem extruded, all EPR system.
  • Okoguard cables meet or exceed all recognized industry standards (UL, AEIC, NEMA/ICEA, IEEE).
  • 105°C continuous operating temperature.
  • 140°C emergency rating.
  • 250°C short circuit rating.
  • Excellent corona resistance.
  • Provides “flat line” corona response.
  • Screens are clean stripping.
  • Exceptional resistance to “treeing.”
  • Low shield resistance.
  • Moisture resistant.
  • Resistant to most oils, acids and alkalies.
  • Sunlight resistant.
  • Improved Temperature Rating.
Okoguard Insulation:115 mils(2.91mm),
5kV-133% or 8kV-100% Insulation Level
1-Catalog Number (1)
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 (2) Conduit in Air
13-Ampacities (3) Direct Burial
14-Ampacities (4) Underground Duct
15-Conduit Size Inches (5)*
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

114-23-6860
114-23-6861
114-23-6862

6
4
2

13.3
21.2
33.6

0.45
0.48
0.54

0.51
0.54
0.60

60
60
60

1.52
1.52
1.52

0.71
0.75
0.80

17.9
19.0
20.3

295
360
460

350
415
515

84
110
145

150
195
250

92
120
155

2
2
2 1/2

114-23-6865
114-23-6867
114-23-6869

2/0
4/0
350

67.4
107.0
177.0

0.65
0.75
0.89

0.71
0.81
0.95

60
80
80

1.52
2.03
2.03

0.91
1.05
1.20

23.1
26.7
30.5

715
1030
1520

780
1120
1640

225
305
430

365
465
615

235
310
415

3
3
3 1/2

114-23-6872
114-23-6875
114-23-6878

500
750
1000

253.0
380.0
507.0

1.01
1.19
1.34

1.07
1.26
1.42

80
80
80

2.03
2.03
2.03

1.32
1.51
1.67

33.5
38.4
42.4

2035
2910
3760

2175
3145
4020

530
665
770

745
910
1055

505
630
720

4
5
5

Minimum Manufacturing Quantity for non-stock items is 5000'

Aluminum Conductors
(1) Aluminum conductors are available on special order.

Ampacities
 (2) Ampacities are in accordance with Table 310.73 of the NEC for 5kV three single Type MV-105 conductors, or single conductors twisted together (triplexed) and installed in an isolated conduit in air at an ambient temperature of 40°C and a conductor temperature of 105°C. Refer to Table 310.73 for 8kV ampacities 

(3) Ampacities are in accordance with Table 310.81 of the NEC for a 5kV insulated single conductor directly buried with a conductor temperature rating of 105°C, ambient earth temperature of 20°C, 100% Load Factor, thermal resistance (RHO) of 90, 7 1/2 inch spacing between conductor center lines, and 24 inch spacing between circuits. Refer to Table 310.81 for 8kV ampacities.

(4) Ampacities are in accordance with Table 310.77 of the NEC for 5kV three single conductors or triplexed cable in one underground raceway, three feet deep with a conductor temperature of 105°C, 100% Load Factor, an ambient earth temperature of 20°C, and thermal resistance (RHO) of 90. Refer to Table 310.77 for 8kV ampacities.

Refer to the NEC, IEEE/ICEA S-135 Power Cable Ampacities, or the Okonite Engineering Data Bulletin for installation in duct banks, multiple point grounded shields, other ambient temperatures, circuit configurations or installations requirements.

(5) 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.

D/07110206 
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