MGM 110 Armoured Mine Telephone & Signal Cable, 110 V

MGM 110 is a 110 V armoured communication cable for fixed telephone and signal circuits in underground mines and surface installations. The range combines 1.5 mm² tinned copper conductors with PVC insulation, PVC bedding, galvanized steel wire armour and a special PVC outer sheath. Single-layer and double-layer armour versions support different mechanical protection requirements along the cable route.

Choose the core arrangement to match the circuit. Signal constructions contain 2 to 91 individual insulated cores. Telephone constructions contain 1 to 61 twisted pairs, with two 1.5 mm² conductors in each pair. Keeping these arrangements distinct makes it easier to specify terminals, identify circuits and select the correct cable diameter. A four-core signal cable and a two-pair telephone cable have the same conductor count, but their internal lay-up differs.

The armour surrounds the PVC-bedded core assembly to protect fixed runs against mechanical damage. For cable supports, glands and entry openings, use the diameter and minimum bend radius of the selected armour version. The double-layer construction generally requires more space and carries a greater installed weight than the corresponding single-layer cable.

The specification tables below keep all four combinations separate: signal or telephone lay-up with single-layer or double-layer armour. Include the required core or pair count, armour build and installation conditions in your enquiry so the cable and termination details can be matched to the project. Explore the mining and tunneling cable range for related mine circuits.

Use the fixed armoured mining cable guide to distinguish fixed routes from trailing and reeling duty.

Construction

The representative illustration shows a single-layer armoured MGM 110 4 × 1.5 mm² signal cable. Telephone variants use twisted pairs; double-layer variants add a second steel armour layer.

Applications

MGM 110 serves fixed mine telephone and signalling networks in underground workings and surface plant. Use the telephone construction where the circuit calls for paired conductors; select the signal construction for a specified multi-core signal arrangement.

• Fixed telephone connections along mine roadways and between mine service points.
• Fixed signalling circuits in galleries, tunnels and surface mining facilities.
• Mechanically protected communication routes using cable supports, trays or other project-approved mounting arrangements.

Select the armour build with the installation route, mechanical protection and termination arrangement. The circuit voltage must remain within the 110 V rating. Follow the mine electrical design and applicable installation rules for hazardous areas.

Where the cable schedule specifies PE-insulated mine communication cable, review the MHYV mining communication cable family for model-specific conductor groups and protective layers.

For fixed power distribution, compare the fixed mining power cable range. For a moving or suspended hoist circuit, use the underground mine hoist cable selection.

Specifications

Single-layer armoured signal cable

Signal configuration is expressed as number of individual cores × conductor area.

Single-layer armoured telephone cable

Telephone configuration is expressed as pairs × 2 × conductor area.

Double-layer armoured signal cable

Signal configuration is expressed as number of individual cores × conductor area.

Double-layer armoured telephone cable

Telephone configuration is expressed as pairs × 2 × conductor area.

Dimensions and weights apply to the specified configuration and armour build. Use the selected row for cable entry, support and bend planning.

Standards

The Turkish Hard Coal Enterprises telephone-cable specification provides procurement context for fixed mine telephone circuits using the MGM 110/1984 construction basis.