Name: MGM 112 Type E2/E4/E5 660/1100V Unscreened Armoured Mining Cable
Brand: TEBAOFLEX

Product overview

MGM 112 Type E2, Type E4 and Type E5 are the unscreened, steel-armoured power cables of the MGM 112 specification of the Turkish Hard Coal Enterprises MGM mining cable series. The cores are EPR insulated tinned Class 5 copper with no individual screen. In Type E4 and E5 they are laid around a central cradle without touching each other; the two cores of Type E2 are laid without a cradle. A rubber bedding, galvanized steel pliable armour and a heavy-duty chloroprene sheath complete the cable.

The specified duty is power supply for excavating and crushing machines and equipment, in deep mines where explosive gases and dust can accumulate and on the surface. Type E4 is the main range, from 4×2.5 mm² to 4×150 mm² and 28 A to 320 A, so the same construction covers anything from a small pump to the main feed of a crusher or conveyor drive. Type E2 is a single 2×4 mm² size and Type E5 runs from 5×4 to 5×16 mm².

Browse the MGM mining cable category for the other cables in the Turkish hard coal MGM series or download the MGM 112 Type E2 / Type E4 / Type E5 datasheet (PDF).

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Application & Features

Selection overview

Type E cables are the choice when the circuit needs mechanical protection but not a screen around every core. Typical runs are feeds from a mine substation or distribution box to crushers, conveyor drives, pumps and fans, laid along the roadway or in a surface plant where the steel armour protects against rock falls, vehicles and crushing. Because the cores are not screened, earth-fault protection has to rely on the armour or a dedicated core, so check your protection scheme before choosing an unscreened type.

The core count follows the circuit. Type E4 carries three phases plus a fourth conductor, Type E5 adds a fifth conductor for installations that want a separate protective core alongside the four, and Type E2 serves two-wire auxiliary or control feeds. The larger E4 sizes, from 4×35 mm² up, are heavy cables of 5650 to 18500 kg/km and 561 to 953 mm minimum bending radius, so plan drum sizes and pulling equipment before delivery.

Unscreened, cradle-separated coresCores in E4 and E5 sit around a cradle without contact; lighter and simpler than an individually screened cable.
Steel pliable armourGalvanized steel armour from 7/0.45 to 7/1.25 mm over a rubber bedding for roadway and plant protection.
Wide E4 size rangeTwelve E4 sizes from 4×2.5 to 4×150 mm², rated 28 to 320 A at 25 °C.
3 kV test voltageTested at 3 kV for 660/1100 V service in deep mines and on the surface; approval is quoted per order.

Mine rock crusher house with an inclined conveyor gantry, a surface crushing plant of the type fed by MGM 112 Type E4 armoured power cable — A mine crusher house linked by an inclined conveyor. Crushers and conveyor drives like these are fed through armoured power cables such as MGM 112 Type E4. Photo: Steve Ford Elliott, CC BY 2.0, via Wikimedia Commons.

Specifications

Technical data

Values from the current TEBAOFLEX MGM 112 Type E2 / Type E4 / Type E5 datasheet. The final construction is confirmed on the approved datasheet for your order.

Electrical, mechanical and material data

Parameter	Value
Rated voltage	660/1100 V
Test voltage	3 kV
Conductor	Stranded, tinned copper wire, IEC 60228 Class 5
Insulation	EPR
Core screen	None
Core count	Type E2: 2 cores; Type E4: 4 cores; Type E5: 5 cores
Lay-up	Cores laid around a cradle without contact, except Type E2
Bedding	Rubber-based bedding compound
Armour	Galvanized steel pliable armour
Outer sheath	Heavy-duty chloroprene compound
Design specification	MGM 112
Application	Power supply for excavating and crushing machines and equipment; deep mines where explosive gases and dust can accumulate, and surface use

Technical data: MGM 112 Type E2

Parameter	Unit	2×4
Cores / cross-section	mm²	2×4
Stranding	mm	56/0.30
Conductor diameter, nom.	mm	2.60
Insulation thickness	mm	1.0
Radial inner sheath	mm	2.0
Size of armour	mm	7/0.45
Radial outer sheath	mm	2.5
Min. overall diameter	mm	23.9
Max. overall diameter	mm	26.4
Min. bending radius	mm	264
Approx. cable weight	kg/km	950
Copper weight	kg/km	80
Current rating at 25 °C	A	28
Phase conductor resistance	Ω/km	5.09

Technical data: MGM 112 Type E4, part 1 (4×2.5 to 4×25)

Parameter	Unit	4×2.5	4×4	4×6	4×10	4×16	4×25
Cores / cross-section	mm²	4×2.5	4×4	4×6	4×10	4×16	4×25
Stranding	mm	50/0.25	56/0.30	84/0.30	80/0.40	126/0.40	196/0.40
Conductor diameter, nom.	mm	2.10	2.70	3.30	4.40	5.50	7.10
Insulation thickness	mm	1.4	1.4	1.5	1.5	1.5	1.6
Radial inner sheath	mm	2.0	2.0	2.5	2.5	2.5	2.5
Size of armour	mm	7/0.45	7/0.45	7/0.70	7/0.70	7/0.70	7/0.70
Radial outer sheath	mm	2.5	2.5	3.8	3.8	3.8	4.3
Min. overall diameter	mm	26.2	27.7	36.7	38.8	41.5	46.1
Max. overall diameter	mm	28.6	30.1	38.8	41.0	44.0	49.8
Min. bending radius	mm	286	301	388	410	440	498
Approx. cable weight	kg/km	1280	1450	2450	2900	3600	4450
Copper weight	kg/km	100	160	240	390	620	960
Current rating at 25 °C	A	28	37	46	63	85	110
Phase conductor resistance	Ω/km	8.21	5.09	3.39	1.95	1.24	0.795

Technical data: MGM 112 Type E4, part 2 (4×35 to 4×150)

Parameter	Unit	4×35	4×50	4×70	4×95	4×120	4×150
Cores / cross-section	mm²	4×35	4×50	4×70	4×95	4×120	4×150
Stranding	mm	276/0.40	396/0.40	360/0.50	475/0.50	608/0.50	756/0.50
Conductor diameter, nom.	mm	8.40	10.10	11.90	13.90	15.80	17.00
Insulation thickness	mm	1.6	1.7	1.7	2.0	2.2	2.3
Radial inner sheath	mm	2.5	2.5	3.8	3.8	5.0	5.0
Size of armour	mm	7/0.90	7/0.90	7/0.90	7/0.90	7/1.25	7/1.25
Radial outer sheath	mm	4.7	5.1	5.7	6.3	3.8	7.3
Min. overall diameter	mm	51.0	56.1	64.8	74.9	83.8	91.4
Max. overall diameter	mm	56.1	61.8	71.4	78.6	89.0	95.3
Min. bending radius	mm	561	618	714	786	890	953
Approx. cable weight	kg/km	5650	7350	9500	10950	15600	18500
Copper weight	kg/km	1350	1920	2690	3650	4610	5760
Current rating at 25 °C	A	135	170	205	250	295	320
Phase conductor resistance	Ω/km	0.565	0.393	0.277	0.210	0.164	0.132

Technical data: MGM 112 Type E5

Parameter	Unit	5×4	5×6	5×10	5×16
Cores / cross-section	mm²	5×4	5×6	5×10	5×16
Stranding	mm	56/0.30	84/0.30	80/0.40	126/0.40
Conductor diameter, nom.	mm	2.60	3.30	4.40	5.50
Insulation thickness	mm	1.4	1.5	1.5	1.5
Radial inner sheath	mm	2.0	2.0	2.5	2.5
Size of armour	mm	7/0.45	7/0.50	7/0.70	7/0.70
Radial outer sheath	mm	2.5	3.8	3.8	3.8
Min. overall diameter	mm	31.0	38.0	42.4	46.5
Max. overall diameter	mm	32.3	40.0	45.0	48.9
Min. bending radius	mm	323	400	450	489
Approx. cable weight	kg/km	1750	2900	3900	4800
Copper weight	kg/km	200	290	480	770
Current rating at 25 °C	A	28	46	63	85
Phase conductor resistance	Ω/km	5.09	3.39	1.95	1.24

Selection note: before ordering, ask our engineers to confirm the conductor operating temperature, core colours, sheath colour and marking for MGM 112 Type E2, E4 and E5, the reactance, insulation resistance and voltage drop values for these types, the current rating for your installation conditions and the drum size for the heavier E4 sizes.

Standards & References

Applicable standards and compliance

Design specificationMGM 112, the armoured power cable specification in the Turkish Hard Coal Enterprises MGM mining cable series (MGM 101, 109, 110, 111, 112, 115 and 118).
Conductor referenceStranded tinned copper conductors to IEC 60228 Class 5, from 50/0.25 mm (2.5 mm²) to 756/0.50 mm (150 mm²).
Voltage scope660/1100 V rated voltage and 3 kV test voltage.
ApprovalsMine-authority approvals, type-test reports and marking requirements are confirmed and quoted per order.

Construction

Material and build-up

Type E cables have no screen on the cores. In Type E4 and E5 the EPR cores are spaced around a central cradle so they do not touch; Type E2 is laid up without a cradle. The core bundle is bedded, armoured with galvanized steel and sheathed in chloroprene.

Conductor: stranded tinned copper to IEC 60228 Class 5, from 2.5 mm² (50/0.25 mm) to 150 mm² (756/0.50 mm).
Insulation: EPR, 1.0 mm on Type E2 and 1.4 to 2.3 mm on Types E4 and E5 depending on size.
Lay-up: Types E4 and E5: cores laid around a cradle without contact; Type E2: two cores laid up without a cradle. No core screens.
Bedding: rubber-based bedding compound, 2.0 to 5.0 mm radial depending on size.
Armour: galvanized steel pliable armour, from 7/0.45 mm on the smallest sizes to 7/1.25 mm on 4×120 and 4×150 mm².
Outer sheath: heavy-duty chloroprene compound, 2.5 to 7.3 mm radial depending on size.

FAQ

Selection questions

What are MGM 112 Type E2, E4 and E5, and how do they differ from Types 62, 63 and 64?

They are the unscreened armoured power cables of the MGM 112 specification. The number after the E gives the core count: two, four or five. Unlike MGM 112 Type 62, 63 and 64, which put a braid screen on every 4 mm² core, the E types have no core screens and are tested at 3 kV instead of 2.5 kV. The E4 range also goes far larger, up to 4×150 mm² and 320 A, while Types 62 to 64 stop at 4 mm².

When should I choose an unscreened E type over a screened MGM 112 cable?

Choose an E type for fixed or semi-fixed feeds where the protection scheme does not need an earthed screen around each conductor, for example substation-to-crusher or conveyor drive runs protected by the armour. Where the mine requires individually screened phase cores for earth-leakage protection, use a screened type such as MGM 112 Type 201 and 211 or the Types 62 to 64.

Which details are needed for a quotation?

Send the type (E2, E4 or E5) and size, the quantity in metres and the drum lengths, the supply voltage and load current, whether you need the standard galvanized steel armour, any sheath marking or colour requirement, and the mine authority whose approval or test report you need. For E4 sizes from 4×35 mm² up, tell us your maximum drum weight and diameter.

How does an MGM 112 Type E4 compare with an MGM 115 cable?

MGM 112 Type E4 is steel-armoured and has unscreened cores, so it suits cable laid along the roadway or in a plant. The MGM 115 cables, such as MGM 115 Type 11, have screened phase cores and no armour, which keeps them flexible for trailing behind moving machines. Both families are listed in the MGM mining cable category.

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Send the type and size (e.g. E4 4×50 mm²), metres and drum lengths, supply voltage and load current, armour requirement and the mine approval you need.

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MGM 112 Type E2/E4/E5 660/1100V Unscreened Armoured Mining Cable

Application & Features