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Branch
Cabling
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High
quality, speed, efficiency, flexibility and costs are the
prime considerations of today's construction projects.
The present practices for sub main distribution in risers,
hotels, tunnels etc. involve the bolting together of truncated
sections. Such methods dictate multiple logistic issues and
the creation of regular joints.
Modular
Wiring Systems has introduced Branch Cabling to their product
portfolio to eliminate the extra time that is demanded by
such traditional methods.
Multiple component parts are replaced in most instances by
a single cable drum. The factory controlled and tested installation
is completed with just one simple placement.
Branch Cabling is suitable for many applications including:
- Risers - Sub main distribution for commercial, industrial
and leisure
- Linear - Sub main distribution for leisure and residential
- Linear - Lighting/small power distribution for tunnels,
highways, bridges etc.
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- Branch
Joints - the key to the system
Branch
joints employ the latest H.V connection technology. The assembly
is then over-moulded; the cable sheath and over-moulding process
bond to achieve an airtight and waterproof assembly.
Typically, a single Branch Cable is provided per branch with
an option of up to three further cables, if required.
Electrical
and physical properties of the branch joint and head support
are tested prior to despatch.
Branch
Cables should be sized to cater for future flexibility and
optimum load/capacity requirements. If additional supplies
are required after installation, these are 'tapped off ' the
switched fuse isolator.
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Branch
mould dimensions
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Main
Cable
m²
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Branch
Cable
m² *
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Dimensions
(m)
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d1
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d2
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L
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35
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16
- 25
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44
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41
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105
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50
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16
- 35
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50
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44
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105
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70
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16
- 50
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50
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44
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105
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95
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16
- 50
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57
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50
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115
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120
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16
- 95
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69
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64
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140
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150
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16
- 120
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77
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64
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150
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185
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16
- 120
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77
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64
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150
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240
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16
- 185
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77
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64
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150
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300
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16
- 185
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62
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39
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122
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400
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16
- 240
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73
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47
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137
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500
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16
- 240
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73
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47
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137
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530
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16
- 240
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79
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52
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137
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800
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16
- 240
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79
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52
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137
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1000
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16
- 240
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94
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78
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170
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Thse
dimensions are subject to minor modifications
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Vertically
Suspended
Branch Cabling
Each
Branch Cable is terminated with a waterproof compound and
end cap reinforced with heat shrinkable tube.
A unique steel constructed cable grip is employed to support
each Branch Cable during and after the installation process.
Each Branch Cable is easily supported with recognised fixing
methods such as those employed with PVC/SWA/PVC cables.
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Cable
Grip
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Typically
only three people required
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Current
rating
A
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Conductor
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Thickness
of
insulation
mm
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Thickness
of
sheath
mm
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Approximate
overall
diameter
mm
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Approximate
weight
kg/km
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AC
test
voltage
kv/5mi
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Maximum
conductor
resistance (20°C)
½/km
n
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Voltage
drop
x10-3
mV/A/M
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Nominal
sectional
area mm²
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Shape
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Diameter
mm
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74
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10
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3.7
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0.7
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1.4
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8.0
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150
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3.5
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1.83
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2.0
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99
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16
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4.7
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0.7
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1.4
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9.5
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215
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3.5
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1.15
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1.3
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130
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25
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6.9
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0.9
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1.4
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11.5
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310
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3.5
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0.727
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0.84
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161
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35
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7.0
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0.9
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1.4
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12.0
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410
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3.5
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0.524
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0.63
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209
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50
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8.5
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1.0
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1.4
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14.0
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570
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3.5
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0.387
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0.49
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268
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70
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10.1
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1.1
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1.4
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16.0
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770
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3.5
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0.268
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0.36
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326
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95
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11.7
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1.1
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1.6
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18.0
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1,030
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3.5
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0.193
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0.29
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379
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120
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Compact
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13.2
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1.2
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1.6
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20.0
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1,280
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3.5
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0.158
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0.24
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436
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150
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round
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14.7
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1.4
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1.6
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22.0
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1,590
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3.5
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0.124
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0.21
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500
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186
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shape
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16.4
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1.6
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1.6
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24.0
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1,950
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3.5
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0.0991
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0.19
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590
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240
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18.6
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1.7
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1.7
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27.0
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2,490
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3.5
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0.0754
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0.16
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681
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300
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20.8
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1.8
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1.8
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30.0
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3,140
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3.5
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0.0601
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0.15
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793
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400
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24.1
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2.0
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1.8
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34.0
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4,140
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3.5
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0.0470
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0.131
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904
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500
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26.9
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2.2
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2.0
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37.0
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5,140
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3.5
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0.0366
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0.120
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1,033
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630
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30.2
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2.4
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2.2
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41.0
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6,140
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3.5
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0.0283
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0.111
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1,179
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800
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34.8
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2.6
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2.3
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46.0
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8,450
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3.5
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0.0221
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0.104
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1,323
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1000
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39.0
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2.8
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2.4
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51.0
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10,600
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3.5
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0.0176
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0.0984
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Ambient
Temperature: 30°C IEC Standard Pub. 502
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These
cables are manufactured according to IEC standard 502 - BS5467,
5468 and 6622: Extruded
Solid Dielectric Insulated Power Cables for Rated Voltages from
1 kv up to 30 kv, and
authorised by Lloyd’s Register of Shipping Type Approval Certificate
- No. 4/10012.
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Branch Cabling Specification |
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Reduced
costs
• Material
• Labour
• Construction programmes
Product Integrity
• With one single joint free assembly that
is produced in a stringent quality
factory controlled environment, the
physical and electrical properties of
Branch Cabling are factory tested and
guaranteed
Nil maintenance requirements
• Branch Cabling is an entirely sealed
joint-free assembly. After initial
installation and testing, therefore, no
further access or maintenance is
required.
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Reduced
space
• Using the risers, trenches, etc. purely for
pulling, laying and so on, expensive floor
space can be maximised and fire barriers
simplified.
Airtight and watertight sealing
• Completely sealed, the cables can be
installed in many environments, solving
problems often associated with moisture
ingress during the construction phase
Flexibility
• Offset risers easily accommodated
• Up to four sub branches can be mounted
on each single branch
• Branch cables can be sized to reflect the
future capacity requirements
• Over sized neutrals or earths can be
easily accommodated
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To
assist in providing you with a quotation or when you are ordering
Branch
Cabling, please submit the following:
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Schematic
drawings - length of main cable, Branch Cable, and distances
between branch joints |
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Distribution
format - 1ph or 3ph |
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Cable
material specification - XLPE/PVC or XLPE/LSOH |
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Main
and Branch Cable - conductor sizes |
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Head
support - with or without |
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Laying
method - to be pulled from the ground floor up or lowered from
the top floor down |
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Drum
- optimum drum size and gross weight. Consideration should be
given to site access, handling
etc if known. Alternatively, drum size and weight can be advised
on receipt and/or developed to suit
site conditions. |
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Modular
Wiring’s policy is one of continuous development and we reserve
the right
to change the specification of any item without prior notice
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