TUNNEL CABLES

(N)3GHSSHCH

These cables are used for the connection of mobile operating equipments in mines and underground

excavations with hazardous environments. In stationary operation, e.g.highvoltage transformers in mining and

tunnelling.

CABLE CONSTRUCTION

Insulation
conductor	Flexible electrolytic stranded tinned copper wire DIN VDE 0295 Class 5
Main Cores	3Gl3 type EPR compound
Pilot Control Cores	3Gl3 type EPR compound
Electrical Field Control	Extruded inner and outer rubber semiconductive layer for 3.6/6 kV cables outer semiconductive layer only
Protective Conductor	Made of plain copper wires or copper wire braiding laid up concentrically around each main core
Core Identification
Main Cores	Natural coloring, design acc to DIN VDE 0250 Part 1
Pilot Cores	Black colored and number coded
Lay Up	Three main conductors laid-up with three pilot control cores in the outer interstice.Protective cores are concentricalty wrapped over insulation of power cores
Inner Sheath	Special Halogen free and flame retardant HFFR compound
Monitoring Conductor	Semioonductive tape + overall concentric lay of copper wires and syntetic tape over wires
Inner Sheath	Special Halogen free and flame retardant HFFR compound
Armour	Galvanized steel wire braiding, coverage minimum 75%
Outer Sheath	Special Halogen free and flame retardant HFFR compound, Red or Black

Working Temperature
Rated Voltage	3.6/6KV	6/10KV	8.7/15KV	12/20KV	18/30KV
AC Test Voltage	11KV	17KV	24KV	29KV	43KV
Max.Permissible Operating Voltage AC	4.2/7.2 KV	6.9/12 KV	10.4/18 KV	13.9/24 KV	20.8/36 KV
Max.Permissible Operating Voltage DC	5.4/10.8 KV	9/18 KV	13.5/27 KV	18/36 KV	27/54 KV
Min Bending Radius	DIN VDE 0298-3
Current Carrying Capacities	DIN VDE 0298-4
Fixed	-40°C- +80°C
Mobile	+5°C- +80°C
Max.Tensile Load Of cable	20N/mm²
max.torsion	25°/m
Trawl Speed For Tunnelling App	Max.30 m/min
Minimum Distarce For Change Of Direction	20×D

Cross Section (mm²)	Overall Diameter min-max (mm)	conductor Resistance at 20°c (Ω/km)	Appro. Weight (kg/km)
3x25+3x16/3E+3x2.5ST+ÜL	47.0-51.0	0.780	3600
3x35+3x16/3E+3x2.5ST+ÜL	49.0-54.0	0.554	4170
3x50+3x25/3E+3x2.5ST+ÜL	52.0-57.8	0.386	4850
3x70+3x35/3E+3x2.5ST+ÜL	56.1-61.2	0.272	5900
3x95+3x50/3E+3x2.5ST+ÜL	60.3-66.2	0.206	7044
3x120+3x70/3E+3x2.5ST+ÜL	63.8-70.2	0.161	8620
3x150+3x70/3E+3x2.5ST+ÜL	66.0-72.0	0.129	9860
3x185+3x95/3E+3x2.5ST+ÜL	70.0-74.0	0.106	11300

6/10 KV

Cross Section (mm²)	Overall Diameter min-max (mm)	conductor Resistance at 20°c (Ω/km)	Appro. Weight (kg/km)
3x25+3x16/3E+3x2.5ST+ÜL	54.0-57.0	0.780	4200
3x35+3x16/3E+3x2.5ST+ÜL	57.1-60.2	0.554	4650
3x50+3x25/3E+3x2.5ST+ÜL	60.4-63.6	0.386	5380
3x70+3x35/3E+3x2.5ST+ÜL	65.2-68.8	0.272	6450
3x95+3x50/3E+3x2.5ST+ÜL	68.0-71.9	0.206	7700
3x120+3x70/3E+3x2.5ST+ÜL	70.1-76.1	0.161	9260
3x150+3x70/3E+3x2.5ST+ÜL	73.0-78.0	0.129	10840
3x185+3x95/3E+3x2.5ST+ÜL	74.0-79.2	0.106	12400

8.7/15KV

Cross Section (mm²)	Overall Diameter min-max (mm)	conductor Resistance at 20°c (Ω/km)	Appro. Weight (kg/km)
3x25+3x16/3E+3x2.5ST+ÜL	58.0-62.0	0.780	4530
3x35+3x16/3E+3x2.5ST+ÜL	61.0-65.0	0.554	5100
3x50+3x25/3E+3x2.5ST+ÜL	64.7-68.7	0.386	5840
3x70+3x35/3E+3x2.5ST+ÜL	67.9-71.9	0.272	7840
3x95+3x50/3E+3x2.5ST+ÜL	72.4-76.4	0.206	9210

12/20 KV

Cross Section (mm²)	Overall Diameter min-max (mm)	conductor Resistance at 20°c (Ω/km)	Appro. Weight (kg/km)
3x25+3x16/3E+3x2.5ST+ÜL	62.3-66.3	0.780	4920
3x35+3x16/3E+3x2.5ST+ÜL	65.3-69.3	0.554	5400
3x50+3x25/3E+3x2.5ST+ÜL	69.0-73.0	0.386	6200
3x70+3x35/3E+3x2.5ST+ÜL	72.2-76.2	0.272	8240
3x95+3x50/3E+3x2.5ST+ÜL	76.8-80.8	0.206	9610
3x120+3x70/3E+3x2.5ST+ÜL	81.0-84.0	0.161	11260
3x150+3x70/3E+3x2.5ST+ÜL	84.5-88.7	0.129	13840
3x185+3x95/3E+3x2.5ST+ÜL	89.0-93.5	0.106	15400