Isolated (flexible) mineral insulated cable structure diagram
Conductor: Made of multiple strands of copper wires twisted together, with good bending
properties.
Insulation layer: Made of mineral insulation material.
Metal sheath: Made of aluminum soft sheath, processed by special process, with good
conductivity, mechanical impact resistance, flexible bending and other characteristics (
can replace ground wire).
Isolation sheath: Made of cross-linked polyethylene waterproof isolation layer.
Oxygen isolation layer: Made of Mg (OH) 2 or AI (OH) 2 mineral material, with high
temperature resistance, heat insulation, flame retardant and fireproof properties.
Outer sheath: Made of low smoke non-toxic or better and higher plastic material, with
good corrosionresistance, different grades of materials can be selected according to
requirements.
Model description example of fireproof cable
1-Type code: Fire-resistant-N. Isolation-G. Grade A (950°C~1000°C) for 3 hours. Wiring
series B.
2-Conductor code: Copper conductor-T
3-Insulation code: Mica insulation-omitted
4-Metal sheath code: Aluminum metal sheath-L. Aluminum alloy metal sheath-LH. Copper
metal sheath-T.
Copper alloy metal sheath-TH 5-Sheath code: Polyethylene/polyolefin-Y
※ In order to comply with relevant acceptance specifications in various places, functional
codes such as WDZAN, WDZN, NH, ZR can be added in front of the model, and the actual
products are the same.
Product examples of mineral insulated cable
For example of fireproof cable:
Isolated (flexible) mineral insulated cable, rated voltage 0.6/1kV, 4 cores, nominal cross
section 120mm2, expressed as: NG-A (BTLY) 0.6/1kV 4x120.
Isolated (flexible) mineral insulated cable, rated voltage 0.6/1kV, 1 core, nominal cross
section 240mm2, expressed as: NG-A (BTLY) 0.6/1kV1x240.
It can be referred to as NG-A or BTLY, also known as NG-A (BTLY), WDZAN-BTLY, WDZAN-
BTLV, BTLV, BTLYQ, BTLYQ.
