Multipair Instrument Cables ESI 09-6 Issue 6

Applications

These light current control cables are intended primarily for use with control, indication and alarm equipment for switchgear and similar power apparatus in power stations and substations where the nominal voltage does not exceed 150V d.c. or 110V a.c.The cables are also suitable for telemetry applications where large conductor size are required. An optional collective aluminum tape screen can be provided. In case if the installation environment is prone to flooding or prolonged period of dampness, PE insulation should be considered as an alternative to PVC.

Construction

  Multipair Instrument Cables ESI 09-6 Issue 6

 

Conductor Solid tinned annealed copper, sizes: 1/0.8mm(0.5mm2) to BS6360
Insulation PVC (polyvinyl chloride) type 2 to BS7655
Pairing Two insulated conductors uniformly twisted together with a lay not exceeding 100mm
Colour code See technical information
Binder tape PETP transparent tape
Collective screen(optional) Aluminum/polyester tape is applied over the laid up pairs metallic side down in contact with a longitudinal 1/0.5mm to 1/0.8mm tinned copper drain wire
Bedding (for armoured cables) PVC (polyvinyl chloride) to type TM 1 or 6 to BS EN 50363-4-1
Armouring (for armoured cables) Galvanized steel wire armour
Outer sheath Black PVC (polyvinyl chloride) to type TM 1 or 6 to BS EN 50363-4-1

Electrical Properties

Maximum conductor temperature +70C
Minimum bending radius 6 x overall diamter
Minimum ambient temperature - 20C after installation and only when cable is in a fixed position

 

Voltage rating 150V d.c. or 110V a.c.
Test voltage 2Kv r.m.s. between conductors, 5Kv r.m.s. between all conductors and aromur
Maximum conductor resistance(loop) 73.6Ohm/km at 20 C
Minimum insulation resistance 80MOhm/km at 20 C
Maximum mutual capacitance 150Nf/km at 1 KHz
Flame retardancy BS 4066 part 1(IEC 60332-1) or BS 4066 part 3(IEC 60332-3)

Parameter

Unarmoured

Number of pairs Nominal diameter of conductor Nominal Conductor Cross-Sectional Area Insulation thickness Sheath thickness (Min) Overall diameter Cable weight
mm mm^2 mm mm mm Kg/Km
2 0.8 0.5 0.3 0.8 5.1 40
5 0.8 0.5 0.3 1 8.5 100
10 0.8 0.5 0.3 1.1 10.9 170
20 0.8 0.5 0.3 1.2 14.4 280
40 0.8 0.5 0.3 1.4 22.9 600
60 0.8 0.5 0.3 1.6 25.9 880
100 0.8 0.5 0.3 1.9 32.6 1440
200 0.8 0.5 0.3 2.2 46 2780

armoured

Number of pairs Nominal diameter of conductor Insulation thickness Bedding Thickness Diameter of armour wire Sheath thickness Overall diameter Cable weight
mm mm mm mm mm mm mm
2 0.8 0.3 0.8 0.9 1.3 9.5 200
5 0.8 0.3 1 0.9 1.4 13.1 290
10 0.8 0.3 1.1 1.25 1.5 16.4 540
20 0.8 0.3 1.2 1.25 1.6 20.1 770
40 0.8 0.3 1.4 1.6 1.8 29.7 1430
60 0.8 0.3 1.6 1.6 2 33.1 1900
100 0.8 0.3 1.9 2 2.2 41 3010
200 0.8 0.3 2.2 2.2 2.5 56 5660

 

Number of pairs Nominal diameter of conductor Insulation thickness Bedding Thickness Diameter of armour wire Diameter of steel tape Sheath thickness Overall diameter Cable weight
mm mm mm mm mm mm mm mm
2 0.8 0.3 1.5 0.9 - 1.9 12.1 300
5 0.8 0.3 1.5 0.9 - 2 15.3 450
10 0.8 0.3 1.5 1.25 - 2.2 18.6 730
20 0.8 0.3 1.5 - 0.5 2.4 21.8 930
40 0.8 0.3 2 - 0.5 2.8 31.7 1570
60 0.8 0.3 2.6 - 0.5 3.1 36.1 2120
100 0.8 0.3 2.6 - 0.5 3.1 42.2 2850
200 0.8 0.3 3 - 0.5 3.8 57.2 4860