BS7917 150/250V HF-EPR Insulated, SW2/SW4 Sheathed, Collectively Screened Unarmoured Fire Resistant Instrumentation & Control Cables

Applications

150/250V HF-EPR Insulated SW2/SW4 Sheathed Collectively Screened Unarmoured Fire Resistant Instrumentation & Control Cables are designed for fixed wiring in ships and on mobile offshore units, suitable for use in instrumentation, lighting and control circuits where fire integrity is essential.

Standards

• BS 7917
• IEC 60331-31 Fire resistant
• IEC 60332-3A Flame retardant
• IEC 60754-1; IEC 60754-2 Corrosivity
• IEC 61034-2 Smoke density
• Cold bend and impact (-40??C) (on request)
• CSA C22.2 No. 38-95 (on request)

Construction

Conductor	Tinned copper wire stranded circular cl. 2 BS 6360/IEC 60228
Insulation	Mica tape + HF-EPR GP4 according to BS 7655 1.2.
Lay-up	Pairs, triples.
Individual Screen	Aluminium/polyester tape + drain wire tinned copper.
Sheath	Halogen free thermosetting compound SW4 according to BS 7655 2.6 or reduced halogen thermosetting compound SW2 according to BS 7655 2.6.

Mechanical and Thermal Properties

Minimum Internal Bending Radius	8??OD
Temperature Range	-40°C ~ +90°C

Dimensions and Weight

Construction No. of cores??Cross section	Nominal Insulation Thickness	Nominal Sheath Thickness	Minimum Overall Diameter	Maximum Overall Diameter	Approx. Weight
mm2	mm	mm	mm	mm	kg/km
Multipair
3??2??0.75	0.8	1.2	14.0	16.0	202
7??2??0.75	0.8	1.4	18.6	20.7	383
12??2??0.75	0.8	1.6	24.4	27.0	615
20??2??0.75	0.8	1.8	30.8	34.0	841
27??2??0.75	0.8	1.9	35.0	38.4	1265
37??2??0.75	0.8	2.1	38.8	42.6	1707
3??2??1	0.8	1.2	14.8	16.8	208
7??2??1	0.8	1.4	19.6	22.0	413
12??2??1	0.8	1.6	25.8	28.5	683
20??2??1	0.8	1.8	32.6	35.8	1070
27??2??1	0.8	2.0	37.3	40.8	1421
37??2??1	0.8	2.2	41.3	45.2	1912
Multitriple
3??3??0.75	0.8	1.3	15.0	17.0	244
7??3??0.75	0.8	1.4	20.5	23.0	457
12??3??0.75	0.8	1.7	25.6	28.3	758
3??3??1	0.8	1.3	15.8	17.8	270
7??3??1	0.8	1.5	21.9	24.4	521
12??3??1	0.8	1.7	27.1	29.8	857