Constructional Specifications for Instrumentation Cables

Part Type Range/Spec.
Conductor (Copper)
As per IS 8130 /
IEC 60228
Stranded Conductor (ABC/ATC)
(Class-II)
0.50sqmm (7/0.30mm)
0.75sqmm (7/0.37mm)
1.00sqmm (7/0.43mm)
1.50sqmm (7/0.53mm)
2.50sqmm (7/0.67mm)
Flexible Conductor (ABC/ATC)
(Class V)
0.50sqmm (16/0 .20mm)
0.75sqmm (24/0.20mm)
1.00sqmm (32/0.20mm)
1.50sqmm (48/0.20mm)
2.50sqmm (80/0.20mm)
Core Insulation PVC Type A- 70°C Standard Insulation Thickness: 0.60mm
PVC Type C-85°C Colour code as per BS 5308/1S-15541
or as per customer requirements.
PVC Type C-1 05°C
LOPE Insulation  
Any other grade as per customer requirement.  
Units Core Colour code as per BS 5308/IS-1 554-I
Pair or as per customer requirements.
Triad Twisting:
Minimum 12 crossover Twists/meter
Quad
Unit Screen 1 layer of polyster tape Polyster tape 25 micron thick
1 tinned copper drain wire 0.50sqmm ATC
1 Layer of Aluminium backed myler
tape with 25% overlap for 100% coverage.
Al. Myler tape 25micron thick
 
1 Layer of Polyster Tape. Polyster tape 25 micron thick
Number of Units Single Unit  
Multi Unit  
Communication Pair 0.50sqmm ABC insulated, Twisted Iiiir Provided for cables with 6
Pairs/6Triads/6Quads and above.
Overall Screen Same as for Unit screen (Cl. 4)  
Inner sheath PVC Type ST-1 70°C Standard Thickness: 0.80mm
PVC Type ST2 -85°C FR Colour code: Black.
PVC Type FRLS  
Armour Galvanised round GI wire Standard size: 0.90 mm ,1.40 mm
  (as per customer requirement )
Galvanised Flat GI Strips 4 x 0.80 mm
Outer Sheath PVC Type ST-1 70°C Thickness as per BS- 5308,
PVC Type 8T2 -85°C FR IS-1554 P(i)
PVC Type FRLS As per customer requirement