Flame Resistant Cable
Fire resistant cables are necessary in environments with high energy demands and high safety requirements such as high-rises, power stations, mines, and subways. These flame resistant cables are especially important for emergency power lines, fire-control systems, and communication systems. In case there is a fire, the flame retardant cables will still be able to function properly to ensure that no vital systems are lost.
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Reference standard: As per the enterprise standard
The flame resistant cable chooses type and usage
Announcements
1. NH flame resistant cables should be selected for normal requirements. DDNH low smoke, low halogen or WDNH low smoke non-halogen is for places with restricted environmental requirements.
2. The diameter of flame-resistant cable is 15%~25% larger than that of an ordinary cable.
3. The user should strictly avoid damaging the cable with sharp objects or over-bending it. This may affect the fire-resistance of the cable.
4. Four layers of mica tape should be wrapped between the insulation and conductor to act as the fire-resistant layer in the connection of the cable.
| Type | Description |
| NH-VV | Flame-resistant power cable with Cu core PVC insulation & sheath |
| NH-VV22 | Flame-resistant power cable with Cu core PVC insulation & sheath, steel tape armor |
| NH-YJV | Flame-resistant power cable with Cu core XLPE insulation, PVC sheath. |
| NH-YJV22 | Flame-resistant power cable with Cu core XLPE insulation PVC sheath, steel tape armor |
| NH-KVV | Flame-resistant control cable with Cu core PVC insulation & sheath |
| NH-KVV22 | Flame-resistant control cable with Cu core PVC insulation & sheath, steel tape armor |
| NH-KYJV | Flame-resistant control cable with Cu core XLPE insulation PVC sheath |
| NH-KYJV22 | Flame-resistant control cable with Cu core XLPE insulation PVC sheath, steel tape armor |
| NH-BV | Flame-resistant power cable(wire) with Cu core PVC insulation |
| NH-BVV | Flame-resistant power cable(wire) with Cu core PVC insulation & sheath |
| NH-RVV | Flame-resistant power soft cable with Cu core PVC insulation & sheath |
| Type | U0/U(V) | Core number | Area (mm2) |
| NH-VV , NH-VV22 NH-YJV , NH-YJV22 | 600/1000 | 1 | 2.5~300 |
| 2 core , 3/4 core , 3 1 core , 3 2 core | 2.5~240 | ||
| NH-KVV , NH-KVV22 NH-KYJV , NH-KYJV22 | 450/750 | 2~61 core | 2.5~10 |
| NH-BV | 450/750 | 1 | 1.5~300 |
| NH-BVV | 1~5 | ||
| NH-RVV | 600/100 | 1 | 1.5~300 |
| 2~5 | 10~240 |
| Standard | Flame temperature(°C) | firing time | additional voltage(V) | additional current | Experiment result | |
| IEC331 | 750 | 3h | Rated voltage | 3A | Have no the power failure | |
| GB12666.6 | A type | 950-1000 | 90min | Rated voltage | 3A | |
| B type | 750-800 | 90min | Rated voltage | 3A | ||
