MA Coal Safety Certificate for Communication Cables Used in Coal Mines

MA Coal Safety Certificate for Communication Cables Used in Coal Mines

Due to different production batches and specific models of cable products, the images displayed on the platform are for reference only. For more details, please contact our staff to verify. The actual product shall prevail. Manufacturer's delivery, short construction period, guaranteed delivery time.

MA Coal Safety Certificate for Communication Cables Used in Coal Mines

Execution:MT818.14-1999 This is applicable to copper core polymer sheathed fixed and flame-retardant communication cables used in coal mines.

Cable model, name, specification and purpose

MHYV（PUYV）Poly insulated flame-retardant poly chlorinated sheathed mining cable2-57/0.28Used for flat lanes, inclined lanes, and mechanical and electrical tunnels

MHJYV（PUJYV）Reinforced Mining Communication Cable with Poly Insulated Flame Retardant Poly Chlorine Sheath2-57/0.28(Three steel and four copper) used for flat and inclined tunnels, some with tensile strength

MHYVPCommunication cable with poly insulation braided shielding and poly chloride sheath for coal mines （5-10）*2*（0.75-1.5） Used for transmission in places with large electric fields, suitable for fixed installation

MHY32Poly insulated steel wire and PVC sheathed communication cable for coal mines（5-19）*2*（0.75-1.5）Used for main transmission in alleys, wells or inclined shafts

MHYVRCommunication flexible cable with poly insulation and poly chloride sheath for coal mines（5-10）*2*（0.75-1.5）Used for ordinary transmission in mines, can be used

MHYBV（PUYBV）Poly insulated galvanized steel wire braided armor flame-retardant PVC sheathed communication cable for coal mines5-501/0.8Used for flat and inclined tunnels with high mechanical impact

MHY（PUY）Poly insulated aluminum for coal mines/Polymer bonded protective layer flame retardant polyvinyl chloride sheathed communication cable10-1001/0.81/1.0Used for communication lines in inclined shafts and flat tunnels

MHYA32（PUYA32）Poly insulated aluminum for coal mines/Polymer bonding protective layer, galvanized steel wire armor, flame retardant, chlorine sheathed communication cable10-1001/0.81/1.0Used as communication lines for coal mine shafts and inclined shafts

Flame retardant communication cables for coal minesmhPoly insulationYCopper wire core... saving

aluminium-Poly adhesive protective layerAConcentrated inner protective layer... saving

Copper wire woven armorBBlue flame retardant polyvinyl chloride sheathVSteel wire armored blue flame-retardant polyvinyl chloride sheath32

Copper wire braided shieldingPSoft wire coreR

1Wire: annealed bare copper wire, with a diameter of0．30，0．42，0．52，0．60，0．70，0．80，0．90(mm).

2Insulation material: high-density polyethylene or polypropylene, indicating the color of the insulation wire according to the full chromatographic standard.

3Insulated wire pairs: Twist two insulated wires of different colors into pairs at different pitches, and use a specified chromatographic combination to identify the wire pairs.

4Communication cable core structure:with1For basic units, exceeding25The correct cables are combined by unit, and each unit is wrapped with a designated chromatographic unit cable tie to identify different units.100Add cables for wire pairs and above1%The preparatory line is correct, but mostly not exceeding6yes. Fill the gaps inside the cable core with petroleum paste.

5Cable core wrapping tape: Wrap it with polyester film tape.

6, Shielding:Copper wire shielding or embossing(Or without embossing)metal beltThe metal strip is longitudinally wrapped outside the core wrapping of the communication cable.

7Sheath: Blue low-density polyethylene. Double layered sheathed communication cables can also be provided.

3Identification and length marking

There are identification marks on the outer surface of the cable, and the spacing between the marks is not greater than1mThe marking content includes: wire diameter, number of wire pairs, cable model, manufacturer name code and manufacturing year, and length marking with intervals not exceeding1mMark on the outer surface, but offset from the above markings. Mining communication cables adopt full spectrum insulation and aluminum-plastic composite sheath(The longitudinal shielding aluminum strip and sheath of the cable are bonded together to form a sealed protective layer)It has the characteristics of electrical performance and convenient construction.

4Main electrical performance