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Triplex Jacketed NS75/NS90 FT1 - Reduced Neutral

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Secondary Distribution Cable
REFERENCES
Neutral Supported Cable
Standards
Description
Characteristics
Related Information
Standards
National  CSA C22.2 N° 129
Description

Nexans’ triplex neutral supported cables consist of an assembly of two insulated phase conductors factory-cabled around a neutral conductor. The neutral conductor is the supporting member. The conductors are insulated with polyethylene (PE) rated 75 °C or crosslinked polyethylene (XLPE) rated 90 °C.

 

Application

Neutral supported cables are intended for use either as a service drop cable between a power pole and the service entrance, or as a secondary distribution cable between poles. Their use is limited to circuits not exceeding 600 volts phase-to-phase.

Triplex service drop cables are intended to deliver single-phase power from the secondary power line or pole-mounted transformer to the service entrance conductors at the user’s building or other structures.

Optional construction includes an insulated control/supply conductor.


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Characteristics
Construction characteristics
With smaller neutral conductor Yes  
Number of conductors 3  

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Triplex Jacketed NS75/NS90 FT1 (Reduced Neutral) Physical Data

Phase Conductor

Reduced Size Neutral Support

Cable Assembly

Size
(Stranding)
AWG/kcmil

Diameter
(mm)

Jacket
Diameter
(mm)

Size
(Stranding)
AWG/kcmil

Area
(mm²)

Rated
Strength
(kN)

Overall
Diameter
(mm)

Total 
Weight
(kg/km)

4 (7)

5.41

9.3

6 (6/1)

15.48

5.20

18.6

275

2 (7)

6.81

10.7

4 (6/1)

24.71

8.14

21.4

396

1 (7)

7.59

13.1

2 (6/1)

39.23

12.41

26.1

580

1/0 (7)

8.53

14.0

2 (6/1)

39.23

12.41

28.0

660

2/0 (7)

9.55

15.0

1 (6/1)

49.48

15.48

30.0

792

3/0 (7)

10.74

16.2

1/0 (6/1)

62.39

19.08

32.4

960

4/0 (7)

12.07

17.5

2/0 (6/1)

78.65

23.80

35.1

1160

266.8 (18)

13.64

20.2

3/0 (6/1)

99.2

29.67

40.3

1490

336.4 (18)

15.32

22.9

4/0 (6/1)

125.1

37.45

45.7

1910

397.5 (18)

16.74

24.3

266.8 (26/7)

157.2

50.10

48.6

2230

477 (18)

18.34

25.9

336.4 (26/7)

198.2

62.31

51.9

2640

500 (18)

18.69

26.2

397.5 (26/7)

234.2

72.65

52.9

2840

NS75 with black LLDPE (optionally MDPE) insulation, PVC jacket - 1/c black, 1/c red
NS90 with black XLPE insulation,  PVC jacket - 1/c black, 1/c red
Neutral support conductors 266.8 kcmil and larger are round wire ACSR, minimum Type 16, otherwise
Type 100 compact ACSR conductors are used.
Overall diameter is the multiplex assembly circumscribing circle diameter


Triplex Jacketed NS75/NS90 FT1 (Reduced Neutral) Electrical Data

Phase Size
(Stranding)
AWG/kcmil

Neutral
Size
(Stranding)
AWG/kcmil

Phase Conductor Resistance

Inductive
Reactance
(ohm/km)

Cable
Ampacity
(amps)

Rdc @ 20ºC
(ohm/km)

Rac @ 50ºC
(ohm/km)

Rac @ 75ºC
(ohm/km)

Rac @ 90ºC
(ohm/km)

NS75

NS90

4 (7)

6 (6/1)

1.38

1.56

1.70

1.78

0.1129

105

125

2 (7)

4 (6/1)

0.865

0.979

1.07

1.12

0.1061

140

165

1 (7)

2 (6/1)

0.687

0.778

0.848

0.890

0.1129

160

190

1/0 (7)

2 (6/1)

0.544

0.616

0.672

0.705

0.1093

185

220

2/0 (7)

1 (6/1)

0.432

0.489

0.533

0.559

0.1061

210

255

3/0 (7)

1/0 (6/1)

0.343

0.388

0.423

0.444

0.1030

245

290

4/0 (7)

2/0 (6/1)

0.271

0.307

0.335

0.352

0.1001

280

335

266.8 (18)

3/0 (6/1)

0.215

0.244

0.268

0.282

0.1007

325

390

336.4 (18)

4/0 (6/1)

0.171

0.193

0.215

0.225

0.1015

375

450

397.5 (18)

266.8 (26/7)

0.144

0.164

0.184

0.193

0.0993

415

500

477 (18)

336.4 (26/7)

0.121

0.136

0.155

0.163

0.0973

460

560

500 (18)

397.5 (26/7)

0.115

0.130

0.149

0.156

0.0968

500

605

Rdc at 20°C is taken from CSA C49.5
Rac at 90°C is only applicable to NS90 cable
Ampacities are from the CE Code C22.1-06, Table 36A, based on 30°C ambient air,
0.6 m/s wind, and solar radiation of 1025 W/m²


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NS75/NS90 600V Cable Construction
NS75/NS90 600 V Cable Markings
NS75/NS90 600v Optional Features


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