Application & Underground Mining Service
MGM 109 Type 3013 is a 1900/3300 V single galvanized steel wire armoured (SWA) 3-core PVC power cable conforming to Turkish standard TTK MGM 109/1983, engineered for fixed medium-voltage trunk distribution along horizontal mine roadways, underground pump stations, and surface coal-preparation plants.
Horizontal Gallery 3.3 kV Distribution
Single-layer 2.0 mm to 2.5 mm galvanized steel wire armour reduces outer diameter by 4–6 mm and cuts cable weight by ~8–11% versus twin-armoured Type 3023 for easier wall-bracket pulling.
10 kV Tested Medium-Voltage PVC
Uniform 2.2 mm medium-voltage PVC phase insulation across 50 mm² to 185 mm² undergoes 10 kV AC factory testing to ensure high dielectric safety margins in humid underground air.
Main Conveyor & Pump Motor Feeders
Delivers 168 A (3×50 mm²) to 382 A (3×185 mm²) continuous current capacity for trunk belt conveyors, underground compressors, and booster pumping stations.
Type Code Decoding (MGM 109 — 3013): 3 = 1900/3300 V class, 0 = unscreened phase cores, 1 = single-layer GSW armour (SWA), 3 = 3 phase conductors.
Cable Construction & Layer Anatomy
Engineered to Turkish standard TTK MGM 109/1983, Type 3013 surrounds trefoil-laid IEC 60228 Class 2 copper 2.2 mm MV PVC cores with an extruded PVC inner sheath, a single concentric ring of heavy galvanized steel armour wires, and a flame-retardant black special PVC jacket.
| Layer / Component | Material & MGM 109/1983 Engineering Specification |
|---|---|
| 1. Phase Conductor | Electrolytic circular stranded bare copper wire conforming to IEC 60228 Class 2 (50, 70, 95, 120, 150, and 185 mm²). |
| 2. Core Insulation | Medium-voltage PVC dielectric compound (2.2 mm nominal radial wall) laid up in trefoil contact. |
| 3. Inner Bedding | Extruded PVC-based bedding compound (1.8 mm wall for 50–95 mm²; 2.2 mm wall for 120–185 mm²) with optional galvanized steel separator tape. |
| 4. Single GSW Armour (SWA) | Single helical layer of heavy galvanized steel round wires (2.0 mm diameter for 50–95 mm²; 2.5 mm diameter for 120–185 mm²). |
| 5. Outer Sheath | Black special flame-retardant PVC outer jacket (2.1 mm to 2.6 mm radial thickness) resistant to mine water, oils, and abrasion. |
MGM 109 Type 3013 Cross-Section: Three Class 2 bare copper conductors with 2.2 mm MV PVC insulation, PVC inner bedding, single-layer 2.0–2.5 mm GSW wire armour, and special PVC sheath.
Technical Characteristics
MGM 109 Type 3013 combines a tighter 9x maximum-OD installation bending radius (378–567 mm across 3×50 to 3×185 mm²) with a rigorous 10 kV AC factory dielectric test and verified low galvanized steel wire armour DC resistance (0.645 down to 0.165 Ω/km) for reliable 3.3 kV operation.
| Parameter | MGM 109/1983 Rated Value |
|---|---|
| Reference Standard | Turkish Hard Coal Enterprises TTK MGM 109/1983 & IEC 60228 Class 2 |
| Rated Voltage (Uo/U) | 1900 / 3300 V |
| Routine AC Test Voltage | 10 kV AC |
| Standard Cross-Sections | 3×50, 3×70, 3×95, 3×120, 3×150, 3×185 mm² (16–35 mm² & 240–400 mm² on request) |
| Continuous Current (25°C) | 168 A (3×50 mm²) to 382 A (3×185 mm²) |
| Minimum Bending Radius | 9 x maximum overall cable diameter (378 mm to 567 mm) |
| Armour DC Resistance | 0.645 Ω/km (3×50 mm²) down to 0.165 Ω/km (3×185 mm²) at 20°C |
| Installation Environment | Fixed roadway brackets, cable trenches, underground substations, and surface plant |
Dimensional, Weight & Electrical Specifications
The verified engineering table below provides the complete TTK MGM 109 Type 3013 specification schedule from 3×50 mm² to 3×185 mm², covering MV PVC insulation and sheath thicknesses, single-layer SWA wire gauges, outer diameter bounds, cable/copper weights, 25°C current ratings, and DC resistances.
MGM 109 Type 3013 (1900/3300V) — Unscreened Single-Armoured Schedule (3×50 to 3×185 mm²)
| Cable Type | Insul. (mm) | Inner Sheath (mm) | Inner Dia. (mm) | SWA Wire (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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3×50 | 2.2 | 1.8 | 31.2 | 1.0 x 2.0 | 2.1 | 38.0 | 42.0 | 378 | 168 | 0.387 | 0.645 | 1600 | 4100 |
| 3×70 | 2.2 | 1.8 | 34.7 | 1.0 x 2.0 | 2.2 | 41.5 | 45.5 | 410 | 207 | 0.268 | 0.447 | 2300 | 5150 |
| 3×95 | 2.2 | 1.8 | 38.5 | 1.0 x 2.0 | 2.3 | 45.7 | 49.7 | 448 | 250 | 0.193 | 0.322 | 3200 | 6150 |
| 3×120 | 2.2 | 2.2 | 42.5 | 1.0 x 2.5 | 2.4 | 50.7 | 54.7 | 493 | 292 | 0.153 | 0.255 | 4000 | 7750 |
| 3×150 | 2.2 | 2.2 | 46.6 | 1.0 x 2.5 | 2.5 | 55.0 | 59.0 | 531 | 335 | 0.124 | 0.207 | 5000 | 9000 |
| 3×185 | 2.2 | 2.2 | 50.5 | 1.0 x 2.5 | 2.6 | 58.9 | 62.9 | 567 | 382 | 0.0991 | 0.165 | 6230 | 10500 |
Selection Comparison: Type 3013 (SWA) vs Type 3023 & Type 3123 (DWA)
Select single-armoured MGM 109 Type 3013 for horizontal underground galleries where lighter pulling weight and a tighter 9x OD bend radius speed up bracket installation, or step up to double-armoured Type 3023 and copper-screened Type 3123 for vertical mine shafts and restricted earth-fault switchgear.
| MGM 3.3 kV Cable Type | Armour / Screen Difference & Optimal Underground Use Case |
|---|---|
| MGM 109 Type 3013 (This Page) | Single GSW armour (SWA), unscreened, 9x OD bend radius; best for horizontal mine roadways, sub-main galleries, and surface washery feeders. |
| MGM 109 Type 3023 | Double GSW armour (DWA), unscreened, 10x OD bend radius; required for vertical shaft suspension and severe crush zones. |
| MGM 109 Type 3123 | Double GSW armour (DWA) + individual copper-tape core screens; required where 3.3 kV protection mandates screened phase earth-leakage detection. |
| MGM 118 Type 6010 (3.8/6.6 kV) | Single GSW armour (SWA) upgraded to 3.4 mm PVC wall (17 kV test) for 6.6 kV underground primary trunk distribution. |
Frequently Asked Questions (FAQ)
The technical answers below cover common mine electrical engineering questions regarding MGM 109 Type 3013 9x OD bending radius advantages in tight roadway turns, vertical shaft routing limitations versus double-armoured Type 3023, and custom cross-sections from 3×16 mm² to 3×400 mm².
Why does MGM 109 Type 3013 allow a tighter bending radius than Type 3023?
With a single layer of galvanized steel armour wires instead of two interlocking wire rings, Type 3013 achieves a 9x Max OD minimum installation bending radius (versus 10x Max OD on DWA Type 3023/3123), easing turns in tight roadway junctions.
Can Type 3013 be used in vertical mine shafts?
Short vertical risers clipped at close intervals are permissible, but for deep vertical mine shafts TEBAOFLEX recommends double-armoured MGM 109 Type 3023 or Type 3123 to prevent torsional twist and support high self-weight.
Are smaller sizes such as 3×25 mm² or 3×35 mm² available in Type 3013?
Yes. While 3×50 to 3×185 mm² are the standard cataloged trunk sizes, TEBAOFLEX manufactures 3×16, 3×25, and 3×35 mm² Type 3013 feeders to order.
Need MGM 109 Type 3013 3.3kV SWA Feeder Cable?
Share your required cross-sections (3×50–185 mm² or custom sizes) and delivery schedule for a factory technical quotation.
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