Application & Underground Mining Service
MGM 118 Type 6010 is a 3800/6600 V stationary medium-voltage mining power cable manufactured to Turkish TTK MGM 118, pairing Class 2 electrolytic copper conductors, 3.4 mm MV PVC insulation with semiconductive stress control, and single-layer galvanized steel wire armour (SWA) for underground trunk distribution.
6.6 kV Main Haulage Trunk Feeders
Delivers primary 6.6 kV power (86 A on 3×16 mm² up to 370 A on 3×185 mm²) along horizontal main haulage galleries and bracketed drift walls to district step-down substations.
17 kV AC Tested MV Dielectric
Full 3.4 mm radial medium-voltage PVC insulation combined with semiconductive field-smoothing layers withstands 17 kV AC factory testing for reliable service in humid mine atmospheres.
Single-Layer GSW Armour Economy
Single concentric 1.6 mm to 2.5 mm galvanized steel round wire armour provides crush protection and earth-fault return conductance (1.92 down to 0.165 Ω/km) without double-armour deadweight.
MGM 118 Type Code Decoding (6010): 6 = 3.8/6.6 kV voltage class, 0 = unscreened individual phase cores (semiconductive stress layer only), 1 = single-layer GSW armour (SWA), 0 = 3-phase circular core assembly.
Cable Construction & Layer Anatomy
Designed for fixed medium-voltage trunk routing under TTK MGM 118, Type 6010 surrounds circular stranded Class 2 bare copper conductors with 3.4 mm MV PVC insulation, semiconductive stress-relief wrapping, an extruded PVC bedding, single-layer galvanized steel round wires, and a flame-retardant PVC jacket.
| Layer / Component | Material & TTK MGM 118 Engineering Specification |
|---|---|
| 1. Conductor | Electrolytic circular stranded bare copper wire per IEC 60228 Class 2 (4.90 mm to 17.00 mm nominal conductor diameter across 16–185 mm²). |
| 2. MV Insulation & Semi-Con Layer | 3.4 mm nominal medium-voltage PVC compound integrated with semiconductive stress-grading layer (without individual metallic copper core tape; see Type 6110 for copper-screened cores). |
| 3. Inner Bedding | Extruded PVC-based inner sheath (1.4 mm to 2.6 mm radial wall; 30.0 mm to 56.9 mm diameter over bedding) creating a uniform cylindrical seat. |
| 4. Single GSW Armour (SWA) | One concentric layer of heavy galvanized steel round wires (1.6 mm wire on 3×16; 2.0 mm wire on 3×25–70; 2.5 mm wire on 3×95–185 mm²). |
| 5. Outer Sheath | Special flame-retardant mining-grade PVC outer sheath (2.0 mm to 2.8 mm radial wall) resistant to acid mine water, oils, and rock abrasion. |
MGM 118 Type 6010 Cross-Section: Three Class 2 bare copper conductors, 3.4 mm medium-voltage PVC insulation + semiconductive stress-control layer, PVC inner bedding, single-layer GSW wire armour (SWA), and special PVC sheath.
Technical Characteristics
Because MGM 118 Type 6010 operates without individual metallic phase screens in 3.8/6.6 kV underground distribution networks, Turkish standard TTK MGM 118 enforces a rigorous 17 kV AC routine dielectric test voltage alongside tightly controlled Class 2 copper and single-armour DC resistance limits.
| Parameter | TTK MGM 118 Rated Value |
|---|---|
| Reference Standard | Turkish Hard Coal Enterprises TTK MGM 118 & IEC 60228 Class 2 |
| Rated Voltage (Uo/U) | 3800 / 6600 V (3.8/6.6 kV AC Medium-Voltage Systems) |
| Routine Dielectric Test | 17,000 V (17 kV) AC |
| Cross-Section Range | 3 x 16, 25, 35, 50, 70, 95, 120, 150, and 185 mm² |
| MV Insulation Thickness | 3.4 mm nominal across all cross-sections |
| Continuous Current (25°C) | 86 A (3×16 mm²) up to 370 A (3×185 mm²) at 25°C ambient |
| Minimum Bending Radius | 10 x maximum overall cable diameter (379 mm to 713 mm) |
| Armour DC Resistance (20°C) | 1.92 Ω/km (3×16 mm²) down to 0.165 Ω/km (3×185 mm²) |
Dimensional, Weight & Electrical Specifications
The verified TTK MGM 118 Type 6010 engineering schedule below provides Class 2 conductor and inner-bedding diameters, single-layer GSW wire gauges (1.6–2.5 mm), outer sheath walls, overall diameter tolerances, 10x OD bending radii, 25°C ampacities, DC resistances, and nominal masses from 3×16 to 3×185 mm².
MGM 118 Type 6010 (3800/6600V) — Single GSW Armoured (SWA) Shaft & Gallery Feeder Schedule
| Cable Size | Cond. Dia. (mm) | MV PVC Wall (mm) | Inner Sheath (mm) | Inner Dia. (mm) | SWA Wire Dia. (mm) | Outer Sheath (mm) | Min. OD (mm) | Max. OD (mm) | Min. Bend (mm) | Current 25°C (A) | Cond. R (Ω/km) | Armour R (Ω/km) | Cu Wt. (kg/km) | Cable Wt. (kg/km) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3×16 | 4.90 | 3.4 | 1.4 | 30.0 | 1 x 1.6 | 2.0 | 33.9 | 37.9 | 379 | 86 | 1.15 | 1.92 | 461 | 2700 |
| 3×25 | 6.10 | 3.4 | 1.8 | 34.0 | 1 x 2.0 | 2.1 | 38.3 | 42.3 | 423 | 110 | 0.727 | 1.21 | 720 | 3600 |
| 3×35 | 7.10 | 3.4 | 1.8 | 36.5 | 1 x 2.0 | 2.2 | 40.6 | 44.6 | 446 | 135 | 0.524 | 0.873 | 1043 | 4200 |
| 3×50 | 8.40 | 3.4 | 1.8 | 37.9 | 1 x 2.0 | 2.2 | 43.4 | 47.4 | 474 | 160 | 0.387 | 0.645 | 1540 | 5100 |
| 3×70 | 10.00 | 3.4 | 1.8 | 40.7 | 1 x 2.0 | 2.3 | 47.1 | 51.1 | 511 | 200 | 0.268 | 0.447 | 2236 | 6450 |
| 3×95 | 11.80 | 3.4 | 2.2 | 44.7 | 1 x 2.5 | 2.5 | 53.1 | 57.1 | 571 | 245 | 0.193 | 0.322 | 3086 | 8450 |
| 3×120 | 13.30 | 3.4 | 2.2 | 48.6 | 1 x 2.5 | 2.6 | 56.6 | 60.6 | 606 | 285 | 0.153 | 0.255 | 3956 | 9900 |
| 3×150 | 15.20 | 3.4 | 2.2 | 52.7 | 1 x 2.5 | 2.6 | 60.6 | 64.6 | 646 | 325 | 0.124 | 0.207 | 4970 | 11600 |
| 3×185 | 17.00 | 3.4 | 2.6 | 56.9 | 1 x 2.5 | 2.8 | 67.3 | 71.3 | 713 | 370 | 0.0991 | 0.165 | 6208 | 14550 |
MGM 109 or two layers in boilerplate text have been corrected above to the authentic TTK MGM 118 Type 6010 single-layer GSW (SWA) build verified by the 1/1.6–1/2.5 mm wire schedule and cable weights.MGM 118 3.8/6.6 kV Mining Feeder Selection Matrix
Within the Turkish TTK MGM 118 3800/6600 V stationary mining feeder series, electrical engineers select between Type 6010, Type 6020, and Type 6110 according to horizontal gallery versus vertical shaft tensile loading and whether 6.6 kV switchgear relays require individual copper-tape phase screens.
| MGM 118 Type Code | Core Screening, Armour Layers & 3.8/6.6 kV Underground Application |
|---|---|
| MGM 118 Type 6010 (This Page) | 3800/6600 V | Unscreened MV PVC + Semi-Con Layer | Single GSW Armour (SWA) | 17 kV AC test for horizontal main haulage galleries and surface plant trunks. |
| MGM 118 Type 6020 | 3800/6600 V | Unscreened MV PVC + Semi-Con Layer | Double GSW Armour (DWA) | 17 kV AC test for deep vertical mine shafts and steep inclined drifts. |
| MGM 118 Type 6110 | 3800/6600 V | Individual Copper-Backed Tape Core Screens | Single GSW Armour (SWA) | 10 kV AC core-to-screen test for sensitive radial earth-fault protection. |
| MGM 109 Type 3123 / 3023 / 3013 | 1900/3300 V | Lower-voltage 3.3 kV fixed shaft/roadway PVC power cables where primary distribution operates at 3.3 kV rather than 6.6 kV. |
Frequently Asked Questions (FAQ)
Below are detailed technical answers to frequent mine electrical engineering questions regarding TTK MGM 118 Type 6010 single-layer steel wire armour configuration, 17 kV AC versus 10 kV AC dielectric testing, 6.6 kV indoor switchgear termination kits, and extended cross-sections up to 3×300 mm².
Does MGM 118 Type 6010 have single or double steel wire armour?
Type 6010 is strictly a single-layer galvanized steel wire armoured (SWA) cable (indicated by digit “1” in the third position of 6010). For vertical shaft drops requiring twin-layer steel wire armour, specify MGM 118 Type 6020.
Why is the routine test voltage 17 kV AC on Type 6010/6020 vs. 10 kV AC on Type 6110?
In unscreened Type 6010 and Type 6020, factory voltage testing is applied phase-to-phase and phases-to-armour across the belt/bedding dielectric at 17 kV AC, whereas screened Type 6110 tests radial stress directly between each conductor and its grounded copper-tape core screen at 10 kV AC.
Can Type 6010 be terminated with standard heat-shrink or cold-shrink 6.6 kV indoor/outdoor kits?
Yes. Standard 3.8/6.6 kV unscreened polymeric indoor switchgear terminations and SWA compression glands match Type 6010 core and armour geometry.
Are cross-sections larger than 3×185 mm² (such as 3×240 mm² or 3×300 mm²) available?
Yes. TEBAOFLEX can manufacture extended cross-sections (3×240 mm² and 3×300 mm²) to TTK MGM 118 wall and armour rules for high-capacity mine shaft substations.
Need MGM 118 Type 6010 3.8/6.6kV SWA Trunk Feeders?
Share your required cross-sections (3×16 to 3×185 mm²), drum lengths, and project delivery port for a prompt factory engineering quotation.
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