Halogen-free, low-smoke flame retardant\ Fire-resistant cable
This product is used for fixed installation in AC applications50HZ, Power transmission and distribution lines with rated voltages of 0.6/1kV and below are used to transmit electric energy and are used in situations where low-smoke, halogen-free and flame-retardant cables are required.
1. Main reference standards
GB/T12706-2008 Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) extruded insulated power cables and accessories
GB/T9330-2008 Plastic insulated control cable
GB/T19666-2005 General rules for flame-retardant and fire-resistant wires and cables
GB/T17650.2-98 Test methods for gases evolved when the materials of electric or optical cables are burned
GB/T17651.2-98 Determination of smoke density of electric cables or optical cables burning under specific conditions
2. Codename characteristics
|
Series name |
Codename< /span> |
Name< /span> |
|
Halogen-free low-smoke flame retardant series |
WDZ< /span> WDZA< /span> WDZB< /span> WDZC< /span> WDZD< /span> |
Halogen-free, low-smoke flame retardant Halogen-free, low-smoke flame retardant Class A Halogen-free, low-smoke flame retardant Class B
Halogen-free, low-smoke flame retardant class D |
|
Halogen-free low-smoke refractory series |
WDZN< /span> WDZAN< /span> WDZBN< /span> WDZCN< /span> WDZDN< /span> |
Halogen-free, low-smoke, flame-retardant and fire-resistant Halogen-free, low-smoke flame retardant Class A fire-resistant Halogen-free, low-smoke flame retardant Class B fire-resistant Halogen-free, low-smoke flame retardant Class C fire-resistant Halogen-free, low-smoke flame retardant Class D fire-resistant |
3. Wire and cable model
Wire and cable models generally consist of series codes, material codes, usage characteristics, structural characteristics, etc. In this standard, the models of relevant wires and cables are directly used, and the following meanings are expanded as follows
Y——polyethylene or polyolefin insulation or sheath
YJ——Cross-linked polyethylene or cross-linked polyolefin insulation or sheath
F——Irradiation cross-linking
2——Steel tape armor
3——Polyethylene or polyolefin outer sheath
6——Non-magnetic metal tape armor
4. Products are represented by model, specifications (rated voltage, number of cores, and nominal cross-section.
Example1: Copper core cross-linked polyethylene insulation Examples of steel tape armored halogen-free low-smoke Class A flame-retardant polyolefin sheathed power cables are:
WDZA-YJY23 0.6/1k V 3×4 , WDZAYJY23 0.6/1k V 3×4
Example2: Copper core cross-linked polyethylene insulation Examples of steel tape armored halogen-free low-smoke Class B flame-retardant polyolefin sheathed power cables are:
WDZB-YJY 0.6/1KV 4×95+1×50
Example3: Copper core irradiation cross-linked polyethylene Examples of vinyl insulated low smoke halogen-free flame retardant power cables are:
WDZ-YJFE 0.6/1KV 3×70+1×35
Example4: Copper core irradiation cross-linked polyethylene Examples of vinyl insulated low-smoke halogen-free, flame-retardant and fire-resistant power cables are:
WDZN-YJFE 0.6/1KV 5×16
Example6: Copper core cross-linked polyethylene insulation Examples of single-core armored halogen-free low-class A flame-retardant polyolefin sheathed power cables are:
WDZA-YJV63 0.6/1KV 1×95
Example7: Copper core cross-linked polyethylene insulation Copper tape shielded steel tape armored halogen-free low-smoke Class A flame retardant control cable is represented as:
WDZA-KYJYP2-23< /span> 450/750V 7×2.5
5. TechnologyRequirements
The performance of low-smoke halogen-free flame-retardant polyolefin materials should comply withGB/19666-2005 standard regulations.
Flame retardantA, BThe oxygen index of the cable sheath should not be less than32%< span style="font-size:16px;color:#000000;">, flame retardantCThe oxygen index of the cable sheath should not be less than30% span>.
The flame retardant performance of the cable when burning meets the corresponding level of vertical burning test for bundled cables.
halogen acid gas emission amount: the halogen-free performance of the cable sheath during combustion meets GB/T 17650.1Under the specified test conditions, the amount of halogen acid gas released during combustion is not greater than5mg/g.
pH value and conductivity: The pH value and conductivity of the gases escaping when the cable sheath is burned are tested according to GB/T17650.2< span style="font-size:16px;color:#000000;">Provisions,PHThe value is not less than4.3, the conductivity is not greater than 10µs/mm.