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P-LINE h Fire-Resistant Busduct

P-LINE h Fire-Resistant Busduct
P-LINE h Fire-Resistant Busduct
P-LINE h Fire-Resistant Busduct

1150°C/195min A full-scenario intelligent fire-resistant busduct system that maintains power supply for 195 minutes under an extreme 1150°C fire environment, developed by an academician-led team with sandwich gradient thermal insulation technology.

IP66 high protection
400-5500 A high current
Visual intelligent monitoring
CCC compulsory certification
1150°C/195min fire resistance
Sandwich gradient thermal insulation
Model:P-LINE
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Key Benefits

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Industry-leading fire resistance
Maintains continuous power supply for 195 minutes (180min + 15min) under an extreme 1150°C fire environment, far exceeding national standards.
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Sandwich gradient thermal insulation technology
Self-developed fire-resistant and thermal-insulation composite material; when ablated by a 1400°C flame, the rear-side temperature is only 40°C.
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High protection for all environments
Protection class IP54-IP66, the fire-resistant busduct is suitable for humid, dusty, corrosive and other harsh environments.
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High-current transmission capability
Rated current covers 400A-5500A and supports three-phase three-wire, four-wire and five-wire distribution systems.

Product Overview

P-LINE h Fire-Resistant Busduct is a new-generation low-voltage dense-type fire-resistant busbar system system developed by NATUS Electrical under an academician-led team after more than ten years of technical accumulation and two years of focused R&D.
The product introduces gradient thermodynamics and heat-transfer theory, and uses self-developed fire-resistant thermal-insulation composite materials and a sandwich gradient structure to achieve an optimized combination of fire resistance and thermal insulation. It has passed national CCC compulsory certification and professional fire-resistance testing, and can provide continuous power supply for 195 minutes in an extreme 1150°C fire environment. With rated operating voltage of 690V-1000V, protection class up to IP66 and integrated visual intelligent monitoring, it is widely used in commercial complexes, data centers, rail transit, industrial plants and other scenarios with extremely high requirements for power continuity and fire safety.
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Product Structure

A new type of refractory material with high temperature resistance, excellent thermal insulation performance, small size and environmental friendliness. It uses inorganic materials as aggregates and adds a thermal insulation layer to achieve a sandwich gradient structure, ensuring excellent fire resistance and thermal insulation performance.
Experimental Verification: After undergoing more than 180 minutes of flame ablation, the surface temperature reached a maximum of approximately 1400℃, while the backside temperature was only around 40℃, demonstrating excellent fire resistance and thermal insulation performance.

Technical Advantages

01.
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Self-developed fire-resistant composite material
By using inorganic materials as aggregate, we have developed a new fire-resistant and heat-insulating composite material through gradient preparation and composite processing technology, combining excellent fire resistance, thermal insulation and environmental friendliness.
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Efficient heat dissipation and low-loss design
Efficient heat-conducting pipe technology optimizes the heat dissipation path and reduces conductor temperature rise. Impedance per meter is as low as 0.0113 mΩ/m, reducing line loss and improving energy-saving performance.
03.
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Visual intelligent O&M system
Real-time monitoring of busduct temperature, current, voltage and other operating parameters, with data uploaded to the cloud platform. It supports fault warning, historical data query and remote control for unattended intelligent operation and maintenance.

Technical Specifications

ParameterUnit6308001000125016002000250032004000
Current Code060810121620253240
Compliance with StandardsGB /T7251.1-6 IEC60439.1-6 GA /T537-2005
Rated Operating VoltageV400 V/690 V/1000 V
Rated Insulation VoltageV1000 V
FrequencyHz50
Enclosure Protection RatingIPIP54-IP66
Rated Short-Time Withstand Current (Icw)kA5050505080100100100100
Rated Short-Circuit Peak Current (Ipk)kA105105105105176176176176176
Altitudem3000 and below
Insulation ResistancemΩ500 and above
Conductor MaterialTin-plated (or silver-plated) copper busbar
Electrical Clearance and Creepage DistancemmComplies with GB /T7251.1-6, IEC60439.1-6, and GA /T537-2005
Withstand Temperature1150 °C
Fire Resistance Duration180 min+15 min
Enclosure Surface Treatment and ColorElectrostatic powder coating on the surface; standard color code: RAL7035, or customized according to customer requirements
Resistance per Meter (50 Hz 20°C)mΩ/m0.03580.03170.02830.02540.02260.01980.01620.01150.0092
Reactance per Meter (50 Hz 20°C)mΩ/m0.01090.00920.00820.00820.01360.01010.00740.00460.0043
Impedance per Meter (50 Hz 20°C)mΩ/m0.03680.03310.02890.02590.02350.02030.01690.01430.0113

Application
交通枢纽
市政商业
工业行业

Product FAQ

Yes. The fire-resistant busduct passed fire-resistance testing by the National Fixed Fire Extinguishing System and Fire-Resistant Component Quality Supervision and Inspection Center, maintaining continuous power supply for 195 minutes under a 1150°C flame, far exceeding the 90-minute national standard requirement.
The protection class can reach up to IP66, completely preventing dust and water ingress, and can be directly used outdoors, in tunnels and other harsh environments.
It can monitor fire-resistant busduct temperature, current, voltage, insulation resistance and other parameters in real time, support data upload to the cloud platform, and realize remote monitoring and fault warning.
Horizontal installation and vertical shaft installation are supported. Shaft installation uses dedicated spring brackets, with different fixing methods selected according to current rating to ensure firm and reliable installation.
Yes. Special current ratings, external dimensions, protection classes and enclosure colors can be customized to meet project-specific requirements.
Under normal operating conditions, the fire-resistant busduct is designed for a service life of ≥30 years. The intelligent monitoring system can monitor equipment status in real time, identify potential issues and extend actual service life.
Compared with traditional fire-resistant cables, fire-resistant busducts offer larger current-carrying capacity, lower loss, smaller footprint, easier installation, convenient maintenance and better fire resistance, making them especially suitable for high-current and high-reliability scenarios.

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    Email: icd@natus-cn.com
    Tel: 400-928-1888
    Add: No. 369, Labor East Road, Tianning District, Changzhou City, Jiangsu Province
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