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| Home >> Product >> ESI Cable >>ESI 09-6 Issue 6 Section 3 |
Constructional & Electrical Performance Data
ESI 09-6 Issue 6 Section 3 – Induced Voltage Control Cable
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| Conductors |
| 0.80mm Plain annealed copper wire in accordance with BS6360 Class 1. |
| Insulation |
| The conductors are insulated with Polyvinyl Chloride Type 02 to BS7655, uniformly twisted together to form a pair with a
maximum lay length of 125mm, and colour coded for identification (See Table 1). Suitable for voltages upto and including
150 Volts (d.c.) and 110 Volts (a.c.) |
| Cable Formation |
2 pair cables are laid up in quad formation.
5 – 10 pair cables are laid up in layer formation.
20 – 200 pairs cables are laid up in 20 pair units to form the required cable size. A printed number on a longitudinal tape
applied under the binder tape identifies each unit. |
| Screens |
| For 2 pair cables the screen comprises of an aluminium foil in contact with a 0.80mm tinned copper drain wire. For 5 pairs and
above the screen comprises of an aluminium tape with a backing that ensures adhesion to the bedding. The tape screen is
applied over a ripcord and in contact with a 0.80mm tinned copper drain wire. |
| Note: Armoured cables (Generation) always require a collective screen. Types 1 & 2 can incorporate a
screen if required. |
Outer Coverings
Type 1 |
Unarmoured Multipair Light Current Control cables.
Extruded Polyvinyl Chloride sheath to BS7655. |
Type 2 |
Armoured Multipair Light Current Control cables.
Extruded Polyvinyl Chloride bedding to BS7655, Galvanised steel wire armour to BS1442 and an extruded
Polyvinyl Chloride sheath to BS7655. |
Type 3 |
Armoured Multipair (Generation) Light Current Control cables.
Extruded Polyvinyl Chloride bedding to BS7655, Galvanised steel wire armour to BS1442 (2 – 10 pair)
Galvanised steel tape armour (20 – 200 pair) and an extruded Polyvinyl Chloride sheath to BS7655. |
Alternative PVC materials producing lower levels of HCL are available on request.
Electrical characteristics
| High Voltage Test |
Collective screens
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2000 Volts for 1 minute between each conductors & earth
5000 Volts for 1 minute between all conductors & earth |
Cables without screen |
10 000 Volts (ac) for 1 minute between each conductor & earth
15 000 Volts (ac) for 1 minute between all conductors bunched & earth |
Conductor Resistance |
73.60Ohm/Km Loop @ 20°C (Max) |
Insulation Resistance |
80 Mohm/Km @ 20°C (Min) |
Capacitance Unbalance |
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2 Pair
above 2 Pair |
800 pF/500 mtrs @ 1 kHz (Max)
400 pF/500 mtrs @ 1 kHz (Max) |
Mutual Capacitance |
Mutual Capacitance |
Mutual Inductance |
915 μH/500 mtrs @ 1 kHz (Max) |
Cable Dimensions & Identification
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