MGM 110 110V Armoured Telephone and Signal Mining Cable
MGM 110 cross-section
  1. MGM 110 110V Armoured Telephone and Signal Mining Cable
  2. MGM 110 cross-section

MGM 110 110V Armoured Telephone and Signal Mining Cable

MGM 110 110 V armoured telephone and signal cable to the Turkish Hard Coal Enterprises MGM 110 specification: 1.5 mm² tinned copper cores or pairs, PVC insulation, single- or double-layer galvanized steel armour and a special PVC sheath for fixed mine installations.

  • Rated / test voltage110 V / 1 kV
  • Signal cable2 to 91 cores × 1.5 mm²
  • Telephone cable1 to 61 pairs × 1.5 mm²
  • ConductorTinned Cu, 7/0.5 mm stranded
  • Insulation / sheathPVC / special PVC
  • Armour1 or 2 layers galv. steel
  • Overall diameter11.6 – 62.0 mm
  • InstallationFixed, underground and surface

Download MGM 110 datasheet (PDF)Full specifications

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Product overview

MGM 110 is a 110 V multi-core communication cable for mine telephone, signalling and control circuits. It is built to the MGM 110 specification of the Turkish Hard Coal Enterprises MGM mining cable series and is offered in two armour builds: a single layer of galvanized steel armour and a heavier double layer.

The signal version carries 2 to 91 cores of 1.5 mm² tinned copper; the telephone version carries 1 to 61 twisted pairs of the same conductor. Every core is PVC insulated, the lay-up is covered with a PVC-based bedding, and a special PVC outer sheath closes the cable. It is intended for fixed runs in shafts, roadways and surface plant of deep mines where explosive gases and dust may accumulate.

Browse the MGM mining cable category for the other cables in the Turkish hard coal MGM series or download the MGM 110 single-layer armoured datasheet (PDF) and the MGM 110 double-layer armoured datasheet (PDF).

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Application & Features

Selection overview

A coal mine depends on its communication network as much as on its power network. MGM 110 links the surface control room with shaft signalling, roadway telephones, conveyor pull-wire and interlock circuits, gas-monitoring outstations and district switchgear. These runs are installed once and left in place for years, so the cable is designed as a fixed installation cable: stiff enough to hang in a shaft or on roadway brackets, and armoured so that falling rock, a passing mine car or a careless tool does not cut a safety circuit.

Choose the signal version when each circuit needs its own core, such as interlocks, remote indication and control. Choose the telephone version when voice or data runs over twisted pairs, which reduces crosstalk between circuits. The single-layer armour suits roadway trays and surface ducts; the double-layer armour adds diameter and weight but gives more crush resistance and tensile support for shaft drops and exposed roadway sections.

  • Telephone and signal circuitsUp to 91 signal cores or 61 telephone pairs in one sheath for the mine communication backbone.
  • Two armour strengthsSingle- or double-layer galvanized steel armour, dimensioned for each core count.
  • Gassy and dusty workingsSpecified for fixed installations in deep mines where explosive gases and dust may accumulate; approval is quoted per order.
  • Optional steel tape separatorA galvanized steel tape separator can be added under the armour on request.
Weatherproof track-side telephone on a post beside the coal railway of an open-pit lignite mine, the kind of fixed mine telephone point an MGM 110 armoured telephone cable connects
Track-side telephone on the coal railway between an open-pit lignite mine and its power station. Fixed telephone and signal points like this are wired with armoured multi-pair cable such as MGM 110. Photo: Trio3D, CC BY-SA 4.0, via Wikimedia Commons.

Specifications

Technical data

Values from the current TEBAOFLEX MGM 110 datasheet. The final construction is confirmed on the approved datasheet for your order.

Electrical, mechanical and material data

Parameter Value
Rated voltage 110 V
Test voltage 1 kV
Conductor Electrolytic, stranded, tinned copper wire; IEC 60228 Class 2 (single-layer armour version), Class 1 or 2 (double-layer armour version)
Conductor size and stranding 1.5 mm², 7/0.5 mm, nominal conductor diameter 1.50 mm
Insulation PVC, 0.5 mm; core diameter 2.36 mm min. to 2.64 mm max.
Lay-up All cores laid up in contact; telephone cables laid up in pairs
Bedding PVC-based bedding compound
Separator Galvanized steel tape, optional
Armour, single-layer version Single layer of galvanized steel pliable armour
Armour, double-layer version Two layers of galvanized steel pliable armour
Outer sheath Special PVC compound
Signal cable range 2×1.5 to 91×1.5 (cores × mm²)
Telephone cable range 1×2×1.5 to 61×2×1.5 (pairs × 2 × mm²)
Application Signal and telephone cable for fixed installations in mines and on the surface; deep mines where explosive gases and dust may accumulate

Single-layer armour: MGM 110 signal cable

Cable type 2×1.5 4×1.5 7×1.5 10×1.5 12×1.5 14×1.5 19×1.5 37×1.5 61×1.5 91×1.5
Stranding (mm) 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5
Conductor diameter, nom. (mm) 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50
Insulation thickness (mm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Core diameter (mm) 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64
Radial inner sheath (mm) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.2 1.2 1.4
Size of armour (mm) 1/0.9 1/0.9 1/0.9 1/1.25 1/1.25 1/1.25 1/1.25 1/1.6 1/1.6 1/2.0
Radial outer sheath (mm) 1.4 1.5 1.5 1.6 1.6 1.6 1.7 1.8 2.0 2.2
Min. overall diameter (mm) 11.6 12.8 14.2 17.7 18.1 18.6 20.2 26.5 32.1 38.5
Max. overall diameter (mm) 13.0 14.4 15.8 19.3 19.7 20.6 22.2 28.9 34.5 41.3
Min. bending radius (mm) 104 116 127 155 158 165 178 232 276 331
Approx. cable weight (kg/km) 320 395 500 750 850 950 1100 1900 2740 4050
Copper weight (kg/km) 30 60 105 150 180 210 280 540 880 1315

Single-layer armour: MGM 110 telephone cable

Cable type 1x2x1.5 2x2x1.5 4x2x1.5 7x2x1.5 10x2x1.5 12x2x1.5 19x2x1.5 27x2x1.5 30x2x1.5 37x2x1.5 48x2x1.5 61x2x1.5
Stranding (mm) 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5
Conductor diameter, nom. (mm) 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50
Insulation thickness (mm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Core diameter (mm) 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64
Radial inner sheath (mm) 1.0 1.0 1.0 1.0 1.2 1.2 1.2 1.4 1.4 1.4 1.4 1.6
Size of armour (mm) 1/0.9 1/0.9 1/1.25 1/1.6 1/1.6 1/1.6 1/1.6 1/2.0 1/2.0 1/2.0 1/2.0 1/2.5
Radial outer sheath (mm) 1.4 1.5 1.6 1.7 1.7 1.7 1.8 2.0 2.0 2.1 2.3 2.4
Min. overall diameter (mm) 11.6 12.8 17.6 20.5 27.0 30.5 32.9 36.9 37.0 40.8 46.1 51.3
Max. overall diameter (mm) 13.0 14.4 19.3 22.5 28.0 28.9 32.9 39.5 39.6 43.6 48.9 54.5
Min. bending radius (mm) 104 116 155 180 224 232 264 316 317 349 392 436
Approx. cable weight (kg/km) 320 395 690 900 1350 1460 2000 2800 3000 3450 4160 5500
Copper weight (kg/km) 30 60 120 210 290 350 550 780 870 1070 1390 1760

Double-layer armour: MGM 110 signal cable

Cable type 2×1.5 4×1.5 7×1.5 10×1.5 12×1.5 14×1.5 19×1.5 37×1.5 61×1.5 91×1.5
Stranding (mm) 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5
Conductor diameter, nom. (mm) 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50
Insulation thickness (mm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Core diameter (mm) 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64
Radial inner sheath (mm) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.2 1.2 1.4
Size of armour (mm) 1/0.9 1/0.9 1/0.9 1/1.25 1/1.25 1/1.25 1/1.25 1/1.6 1/1.6 1/2.0
Radial outer sheath (mm) 1.5 1.6 1.6 1.7 1.7 1.7 1.8 1.9 2.1 2.3
Min. overall diameter (mm) 15.9 17.0 17.5 22.8 23.2 23.8 25.3 32.5 37.7 45.1
Max. overall diameter (mm) 17.3 18.6 19.1 24.4 24.8 25.8 27.3 34.9 40.1 47.9
Min. bending radius (mm) 156 168 172 220 224 233 246 315 361 432
Approx. cable weight (kg/km) 570 680 820 1280 1350 1450 1650 2850 3000 5600
Copper weight (kg/km) 30 60 105 150 180 210 280 540 880 1315

Double-layer armour: MGM 110 telephone cable

Cable type 1x2x1.5 2x2x1.5 4x2x1.5 7x2x1.5 10x2x1.5 12x2x1.5 19x2x1.5 27x2x1.5 30x2x1.5 37x2x1.5 48x2x1.5 61x2x1.5
Stranding (mm) 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5 7/0.5
Conductor diameter, nom. (mm) 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50
Insulation thickness (mm) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Core diameter (mm) 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64 2.36 – 2.64
Radial inner sheath (mm) 1.0 1.0 1.0 1.0 1.2 1.2 1.2 1.4 1.4 1.4 1.4 1.6
Size of armour (mm) 1/0.9 1/0.9 1/1.25 1/1.25 1/1.6 1/1.6 1/1.6 1/2.0 1/2.0 1/2.0 1/2.0 1/2.5
Radial outer sheath (mm) 1.4 1.5 1.6 1.7 1.9 1.9 2.0 2.2 2.2 2.3 2.4 2.6
Min. overall diameter (mm) 15.9 17.0 22.7 25.3 32.0 32.4 36.2 43.6 44.7 47.3 52.5 58.8
Max. overall diameter (mm) 17.3 18.6 24.4 27.3 34.0 34.8 38.6 46.2 47.3 50.1 55.3 62.0
Min. bending radius (mm) 156 168 220 246 306 314 348 416 426 451 498 558
Approx. cable weight (kg/km) 570 680 1250 1580 2350 2550 3280 4680 4950 5620 6590 8800
Copper weight (kg/km) 30 60 120 210 290 350 550 780 870 1070 1390 1760

Selection note: before ordering, ask our engineers to confirm the conductor operating temperature, core colour code, sheath colour and transmission data (loop resistance, capacitance, attenuation) for MGM 110, the conductor class (IEC 60228 Class 2 on the single-layer armour version, Class 1 or 2 on the double-layer armour version) and the pair identification your exchange or signalling system needs.

Standards & References

Applicable standards and compliance

  • Design specificationMGM 110, the telephone and signal cable specification in the Turkish Hard Coal Enterprises MGM mining cable series (MGM 101, 109, 110, 111, 112, 115 and 118).
  • Conductor referenceTinned copper conductors to IEC 60228 Class 2 (single-layer armour version) or Class 1 or 2 (double-layer armour version).
  • Voltage scope110 V rated and 1 kV test voltage.
  • ApprovalsMine-authority approvals, type-test reports and marking requirements are confirmed and quoted per order.

Construction

Material and build-up

MGM 110 is a round, fixed-installation cable. The PVC-insulated 1.5 mm² cores are laid up in contact with each other, in pairs for the telephone version, then covered by a PVC-based bedding that rounds the core bundle and cushions it under the armour. One or two layers of galvanized steel armour follow, and a special PVC sheath forms the outer jacket.

  • Conductor: 1.5 mm² electrolytic tinned copper, 7 wires of 0.5 mm. Tinning protects the copper against corrosion in humid mine air and eases soldering at terminal blocks.
  • Insulation: PVC, 0.5 mm thick, giving a core diameter of 2.36 to 2.64 mm.
  • Lay-up: all cores laid up in contact; in the telephone version the cores are first twisted into pairs to limit crosstalk between circuits.
  • Bedding: PVC-based bedding compound, 1.0 to 1.6 mm radial thickness depending on size, as a cushion between cores and armour.
  • Separator (optional): galvanized steel tape under the armour, supplied on request.
  • Armour: galvanized steel pliable armour, wire size 1/0.9 mm to 1/2.5 mm depending on cable size, in one layer or two layers.
  • Outer sheath: special PVC compound, 1.4 to 2.6 mm radial thickness depending on size and armour version.

FAQ

Selection questions

What is the MGM 110 cable?

MGM 110 is the telephone and signal cable specification in the MGM series issued by the Turkish Hard Coal Enterprises for cables used in its mines. The other numbers cover power cables: MGM 109 and MGM 118 are PVC-insulated armoured power cables, while MGM 111, MGM 112 and MGM 115 are rubber-insulated cables for machines. MGM 110 is the only one of the series built for 110 V communication and control circuits, with 1.5 mm² cores or pairs instead of power conductors.

Should I choose single-layer or double-layer armour?

Both versions use the same cores and sheath materials; the difference is mechanical. Single-layer armour keeps the cable lighter and smaller, for example 320 kg/km and 11.6 to 13.0 mm for a 2×1.5 signal cable, and suits roadway trays, brackets and surface ducts. Double-layer armour raises the same size to 570 kg/km and 15.9 to 17.3 mm but gives more crush and tensile protection for shaft drops and exposed roadways. Allow for the larger bending radius of the double-layer build when planning cable routes.

Which details are needed for a quotation?

Send whether you need signal cores or telephone pairs, the core or pair count, single- or double-layer armour, whether you want the optional steel tape separator, the length per drum and total quantity, any core identification or sheath marking requirement, and the mine authority whose approval or test report you need to see. Our engineers confirm the construction and return the datasheet with the quotation.

How does MGM 110 compare with MGM 109 armoured power cables?

They share the fixed-installation build: PVC insulation, PVC bedding, galvanized steel armour and a special PVC sheath, with single- and double-layer armour options. MGM 110 is a 110 V communication cable with many small 1.5 mm² cores, while MGM 109 carries power at 1000 V or 3300 V, for example the single-armoured MGM 109 Type 1012/1013/1014 or the double-armoured MGM 109 Type 1023/1024. The two are often run side by side in the same roadway; see the MGM mining cable category for the full series.

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Quality Assurance

Testing at every stage in our own workshop and laboratory, from incoming copper to the packed drum.

Bare copper wire bobbins inspected before stranding at the TEBAOFLEX factory

Raw Material Inspection

Every batch of copper rod, rubber compound and reinforcing material is checked before it reaches the line.

  • Copper: conductor resistance, elongation and surface condition on incoming rod and drawn wire
  • EPR, CPE, PUR and silicone compounds: hardness, tensile strength, elongation and ageing samples from each mix
  • Suppliers and batch numbers are recorded so every drum can be traced back to its materials
Operator monitoring an extrusion line control panel in the TEBAOFLEX workshop

Manufacturing Process Control

Stranding, insulation extrusion, core assembly and sheathing run under recorded process parameters.

  • Class 5/6 stranding with lay length and tension monitored for trailing and reeling flexibility
  • Continuous-vulcanisation extrusion with wall thickness and spark tests logged on every length
  • Operators sign off each stage before the cable moves to the next machine
3.5 kV voltage withstand test station in the TEBAOFLEX laboratory

Electrical Testing

Finished lengths go through the routine tests required by the referenced VDE, ICEA, IEC or NEK standard.

  • Conductor resistance and insulation resistance on every length
  • Voltage withstand (3.5 kV and higher) and partial-discharge measurement in the shielded HV laboratory
  • Screen and pilot-core continuity checks for mining and reeling constructions
Tensile testing machine for conductor and sheath samples

Mechanical and Ageing Tests

Samples from production are tested for the duty a mining, crane or submersible cable will actually see.

  • Tensile strength and elongation of insulation and sheath before and after ageing
  • Hot-set, ozone, oil-immersion and low-temperature bending tests
  • Constant-temperature water bath for insulation resistance of submersible constructions
Single-cable vertical flame test chamber

Flame Test and Final Inspection

Before packing, the cable is checked against the order and the flame-performance requirement of its standard.

  • Single-cable vertical flame test to IEC 60332-1-2 where specified
  • Metre marking, printing, drum length and appearance inspection
  • Test report and packing list issued with every shipment

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