Low Voltage Cables

Fire Resistant Instrumentation Cable
OS / Unarmoured & Armoured

APPLICATION	This cable is used as control, instrumentation and telecommunication means in power stations, mass transit underground passenger systems, airports, hotels, hospitals, and high-rise buildings
VOLTAGE RATING	300/500V
CONSTRUCTION	Plain annealed, stranded circular non-compacted copper, mica tape, XLPE/XLEVA insulation, layer of polyester tape, aluminum foil, tinned drain wire, unarmoured or steel wire armoured, LSZH compound sheath
INSULATION COLOUR	Pair : White/Black insulation printed with numbers Triple : White/Black/Red insulation printed with numbers
SHEATH COLOUR	Black or Orange
SPECIFICATION	BS5308,IEC60331,IEC60332,IEC60754,IEC61034

Detailed Specification

No. of Pairs/ Triple	Conductor		Insulation	Unarmoured Cable		Armoured Cable
No. of Pairs/ Triple	Nominal Area	No./Dia of Strand	Thickness	Approx. Overall Diameter	Approx. Weight	Approx. Overall Diameter	Approx. Weight
1 Pair	mm²	No./mm	mm	mm	kg/km	mm	kg/km
	0.75	7/0.37	0.5	8.5	60	13.5	290
	1.0	7/0.43	0.6	9.2	80	14.0	300
	1.5	7/0.53	0.6	10.0	100	15.0	340
	2.5	7/0.67	0.6	10.5	165	15.5	440
1 Triple	0.75	7/0.37	0.5	9.3	80	14.0	290
	1.0	7/0.43	0.6	10.3	100	14.5	330
	1.5	7/0.53	0.6	10.8	120	15.5	380
	2.5	7/0.67	0.6	11.8	160	16.5	430
2 Pairs	0.75	7/0.37	0.5	13.2	120	18.0	450
	1.0	7/0.43	0.6	15.0	160	20.0	540
	1.5	7/0.53	0.6	16.0	200	21.0	610
	2.5	7/0.67	0.6	17.5	250	22.5	700
4 Pairs	0.75	7/0.37	0.5	15.5	210	20.5	600
	1.0	7/0.43	0.6	17.0	260	23.0	820
	1.5	7/0.53	0.6	19.0	360	25.0	960
	2.5	7/0.67	0.6	20.5	410	26.0	1080

Technical Specification

1. Test Voltage : 1000 Vr.m.s. for 1 minute between each conductor in turn and all the other conductors connected together, and between each conductor in turn and the screen/armour

2. Maximum D.C. Conductor Resistance at 20°C

Conductor Size	Multi-Core	Multi-Pair
0.5 mm²	39.0	39.7
0.75 mm²	26.0	26.5
1.0 mm²	18.1	18.4
1.5 mm²	12.1	12.3
2.5 mm²	7.41	7.54

3. Minimum Insulation Resistance at 20°C

	PE Insulated	PVC Insulated
Individual Conductor (between each conductor and remaining bunched conductors/screen and/or armour)	5000 MΩikm	25 MΩikm
Individual Screens (between screens)	1 MΩikm	1 MΩikm

4. Maximum Mutual Capacitance at 1 KHz (pF/m)

Cable Type	Conductor Size	0.5mm²	1.0mm²	1.5mm²
PE Insulated	Cables without individual pair screen	75 pF/m	75 pF/m	85 pF/m
PE Insulated	All cables with individual pair screen, 1 and 2 pair cables collective screen	115 pF/m	115 pF/m	120 pF/m
PVC Insulated	Pairs or adjacent cores		250 pF/m

5. Maximum Capacitance Unbalance at 1 KHz

PE Insulated Cables : 250 pF / 250 m
PVC Insulated Cables : 450 pF / m

6. Maximum L/R Ratio (for Adjacent Cores)

Conductor Size	Multi-Core
0.5 mm²	25 μH/Ω
0.75 mm²	25 μH/Ω
1.0 mm²	25 μH/Ω
1.5 mm²	40 μH/Ω

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Fire Resistant Instrumentation Cable OS / Unarmoured & Armoured

Fire Resistant Instrumentation Cable
OS / Unarmoured & Armoured