Shipwiring/Offshore Screened Instrumentation
Cables to BS7917
(Ref. 657M SW4 Instrumentation)
Manufactured in both pairs and triples these 150/250V
instrumentation cables provide collective or individual screening through
the use of metallic foils and drain wires. Good flexibility combined with
the use of Mica glass tapes allow fire resistant circuits to be routed
through confined spaces.
The latest SW4 Low Smoke Halogen Free sheathing
compounds ensure that in the event of a fire the cables offer excellent
protection to both people and property by not emitting toxic or corrosive
gases whilst keeping emergency circuits operating.
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Cable Construction -
Individually screened
Tinned copper wire conductors to BS 6360, class 2
or class 5, Mica tape, EPR insulation, cores twisted into pairs or triples,
each pair/triple foil screened with a drain wire, SW4 LSHF sheath - blue or grey.
Cable Construction -
Collectively screened
Tinned copper wire conductors to BS 6360, class 2 or
class 5, Mica tape, EPR insulation, cores twisted into pairs or triples,
overall foil screen and drain wire, SW4 LSHF sheath - blue or grey.
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Core Identification
| Pairs : |
Each pair black, white and numbered |
| Triples : |
Each triple black, white, red and numbered |
| (Alternative colour codes are available) |
Technical Information
| Voltage rating |
150/250V |
| Conductors |
Tinned, BS6360 class 2 or
class 5 |
| Temperature rating |
+90°C maximum conductor temperature |
| Static temperature rating |
-30°C to +90°C |
| Bending radius (static) |
8 x cable O/D |
| Flame retardant |
IEC60332 part 3A, BS4066 part 3A |
| Fire resistant |
IEC60331 (3 hours @ +750°C) |
Armoured versions are also available, ref: 658M
instrumentation |
