Product Introduction
Selection Guidelines
Classification standard
Installation and Maintenance Precautions
| Characteristic | Description |
|---|
| Flame Retardancy | Adopts special structural design and flame-retardant materials, fully complying with coal mine safety standards |
| Laying Adaptability | Suitable for high-drop and vertical laying scenarios |
| Environmental Resistance | Excellent resistance to acid, alkali and oil, with superior heat resistance performance |
| Voltage Limitation | Not recommended for use in 3.6/6kV and above voltage circuits (the dielectric loss of polyvinyl chloride (PVC) increases with the rise of electric field strength) |
Underground Working Requirements
| Parameter | Requirement |
|---|
| Long-term Operating Temperature | ≤ 70 °C |
| Short-circuit Temperature | ≤ 160 °C (duration ≤ 5 s) |
| Laying Ambient Temperature | ≥ 0 °C (preheating to above 0 °C is required when the ambient temperature is below 0 °C) |
| Minimum Bending Radius | ≥ 15 times the outer diameter of the cable |
Standard Model
| Model | Product Name | Scope of Application |
|---|
| MVV | Polyvinyl Chloride (PVC) Insulated and PVC Sheathed Power Cable | For laying in underground coal mines, tunnels and pipelines, without bearing external mechanical force |
| MVV22 | Polyvinyl Chloride (PVC) Insulated and PVC Sheathed Steel Tape Armoured Cable | For laying in underground coal mines, tunnels and pipelines, can bear external mechanical force (cannot withstand large tensile force) |
Basic Structure
| Model | Number of Cores | Rated Voltage 0.6/1kV (mm²) | Rated Voltage 1.8/3kV (mm²) |
|---|
| MVV | 3 Cores | 1.5~300 | 10~300 |
| 3+1 Cores | 4~300 | 10~300 |
| 4 Cores | 4~185 | 4~185 |
| MVV22 | 3 Cores | 2.5~300 | 10~300 |
| 3+1 Cores | 4~300 | 10~300 |
| 4 Cores | 4~185 | 4~185 |
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