User's Manual

Small Multi-Core Ca bles
35 These cables conform to DEF STAN 61-12 (part 5). Each cable consists of a number of
insulated cores, collectively screened and clad in a PVC outer sheath.
36 Core Details
(1) The core details are as follows:
Conductors consist of 16 strands of 0.2 mm diameter tinned copper wire.
Nominal cross-section area of conductor = 0.5 mm
2
.
Nominal diameter of conductor = 0.93 mm
Nominal thickness of insulation = 0.45 mm
Minimum thickness of insulation = 0.40 mm
Minimum diameter of core = 1.75 mm
Maximum diameter of core = 1.90 mm
(2) Braided Screen
The cores are laid-up, covered with binding tape over which is woven a
braiding of 0.2 mm diameter tinned copper wire.
(3) Outer Sheath
A PVC outer sheath is applied by extrusion over the wire braiding.
(4) Maximum Current Rating
The maximum current ratings are as follows:
2.5 A at 1000 V DC
2.5 A at 440 V AC at 1600 Hz.
Power Ca bles
37 These cables are used for services requiring a moderate current carrying capacity, i.e.
main supplies.
2-Core (Power):
Cable Code K: KH Reference No. 5344-787
250/440 V grade: 7 x 0.67 mm (7 x 0.026") cores
cross linked polythene insulation,
braided with 0.2 mm (0.0078") diameter
tinned copper wire, 79% coverage
low smoke, zero halogen outer sheath.
Outer diameter: 12 mm (0.39 in.).
3-Core (Power):
Cable Code L: KH Reference No. 5344-788
(250/440 V grade): Specification as for 2-core cable.
Outer Diameter: 13 mm (0.44 in.)
KH1264
Chap ter 4
Is sue 2 Page 4.17