PILOT CABLES

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PILOT CABLE P (S) QXWQXSUPERVISORY COMMUNICATION TYPE PILOT CABLE (TEP)

BASIC CONSTRUCTIONNo. Designation1 Twisted pairs of PE insulated tinned copper wire 0.914mmo2 Binder tapes3 PETP tape4 Plastic tape (optional)5 Aluminium tape (lapped with PETP tape if required)6 PVC bedding with termite repellent7 Single layer of Galvanised steel wire armour8 PVC sheath with termite repellent

NOT TO SCALE

8

7

6

5

4

3

2

1

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TNB SPECIFICATION REFERENCE TEP

Table 8A. 5kV TEP xx pr/0.914mm AS.GA.AT.

No. of pair

7

12

19

37

Minimumradial thickness

of Insulation

mm

0.508

Minimumradial thicknessof Innersheath

mm

0.9

NominalDiameter ofArmour Wire

mm

1.25

1.6

1.6

2.0

Minimumradial thickness

of Insulation

mm

1.08

OverallDiameter

mm

18.8

23.5

26.4

33.9

Approx.Weight

kg/km

700

1080

1340

2200

BreakdownTest Voltagefor 1 minute

kV dc

5

Table 8B. 10kV TEP xx pr/0.914mm AS.GA.AT.

No. of pair

12

19

37

Minimumradial thickness

of Insulation

mm

0.508

Minimumradial thicknessof Innersheath

mm

1.2

NominalDiameter ofArmour Wire

mm

1.6

1.6

2.0

Minimumradial thickness

of Insulation

mm

1.44

OverallDiameter

mm

23.5

26.4

33.9

Approx.Weight

kg/km

1250

1480

2250

BreakdownTest Voltagefor 1 minute

kV dc

10

Table 8C. 25kV TEP xx pr/0.914mm AS.GA.AT.

No. of pair

12

19

37

Minimumradial thickness

of Insulation

mm

0.8

Minimumradial thicknessof Innersheath

mm

1.6

NominalDiameter ofArmour Wire

mm

2.0

2.0

2.0

Minimumradial thickness

of Insulation

mm

1.52

1.64

1.76

OverallDiameter

mm

34.0

38.5

48.7

Approx.Weight

kg/km

2010

2460

3550

BreakdownTest Voltagefor 1 minute

kV dc

25

ELECTRICAL PROPERTIESDescription Unit Value

Max. Conductor Resistance at 20oC Ω/km 27.04

Min. Insulation Resistance at 20oC Ω.km 10,000

Max. Mutual Capacitance nF/km 60

Max. Pair-to-pair Capacitance Unbalance pF/161m 200

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