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Isolated Mineral Insulated Cable

Excellent fire resistance: The inorganic mineral insulation layer can withstand temperatures up to 950℃/3h (BS6387 Class C), and continuous power supply during fire;

Safe and environmentally friendly: Halogen-free design, no toxic gas during combustion, light transmittance > 60%;

Strong current carrying capacity: The current carrying capacity of the copper conductor is 15% higher than that of ordinary cables with the same cross-section, and it has strong overload tolerance;

Flexible and easy to lay: The bending radius of the corrugated copper sheath is ≤7D, supporting complex wiring;

Long-lasting and durable: Corrosion-resistant copper sheath + magnesium oxide insulation, with a service life of more than 50 years.

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Product Details

Product Description

This product can be directly buried, and can also be laid in tunnels, cable trenches, cable trays, troughs, and shafts where the ambient temperature is not lower than 0℃. It is suitable for power transmission and distribution lines in important places such as high-rise buildings, rail transit, schools, hospitals, shopping malls, garages, financial centers, and substations. Single-core cables are not allowed to be laid in magnetic pipes.

Executive Standard

Q/0100HLT039-2020 Rated Voltage 0.6/1kV Isolated Flexible Mineral-Insulated Fire-Resistant Cable

Mineral Insulated Cables

Model Name

Model	Name	Rated Voltage
NG-A-HL	Isolated Flexible Mineral-Insulated Fire-Resistant Cable with Rated Voltage of 0.6/1kV	0.6/1kV
NG-A(BTLY)-HL	-	0.6/1kV

Cable Specifications

Model	Number of Cores	Nominal Cross-Sectional Area / mm²
NG-A-HL, NG-A(BTLY)-HL	1	10~300
NG-A-HL, NG-A(BTLY)-HL	2	25~240
NG-A-HL, NG-A(BTLY)-HL	3	2.5~150
NG-A-HL, NG-A(BTLY)-HL	4	2.5~150
NG-A-HL, NG-A(BTLY)-HL	3+1	2.5~185
NG-A-HL, NG-A(BTLY)-HL	3+2	2.5~240
NG-A-HL, NG-A(BTLY)-HL	4+1	2.5~150

Structural Diagram

Diagram	Description
[Diagram of NG-A(BTLY) Single-Core Cable]	Outer Sheath, Fire-Resistant Layer, Copper Conductor, Corrugated Aluminum Sheath, Mica Insulation, Copper Conductor, Inorganic Filler, Mica Insulation, Protective Layer
[Diagram of NG-A(BTLY) Multi-Core Cable]	Protective Layer, Corrugated Aluminum Sheath, Outer Sheath, Fire-Resistant Layer

Performance Parameters

Item	Unit	Index
DC Resistance of Conductor (at 20℃), ≤	Ω/km	In line with GB/T 3956-2008
Insulation Resistance	MΩ	The product of the insulation resistance (MΩ) of the cable and the cable length shall not be less than 100 Ω·km; when the cable length is less than 100m, the measured insulation resistance shall not be less than 1000 MΩ
AC Voltage	-	AC 50Hz, 3.5kV/5min, no breakdown alarm occurs to the cable
Fire Resistance Performance (BS 6387)	-	- Under flame at 950℃±40℃, continuous power supply for 180min, the line maintains integrity (C)- Under flame at 650℃±40℃, continuous power supply for 150min, followed by 15min water spraying, the line maintains integrity (W)- Under flame at 950℃±40℃, with 15min mechanical impact, the line maintains integrity (Z)