For low-voltage circuits that need to remain energized during a specified fire exposure, Aluminum PVC Fire Resistant Power Cable combines an aluminum conductor with electrical insulation, a dedicated fire-resistant layer and a PVC protective sheath. It is intended for emergency power distribution and other circuits with defined fire-continuity requirements.
The range covers conductor sizes from 1.5 mm² to 1000 mm², with electrical data provided for conductor resistance, withstand voltage and ampacity under different installation conditions. Final cable selection depends on the circuit load, route length, installation method, allowable voltage drop and applicable fire-safety requirements.
|
Nominal cross-section (mm²) |
Insulation thickness (mm) |
Sheath thickness (mm) |
Approximate cable outer diameter (mm) |
Conductor DC resistance (Ω/km)Al |
Test voltage (kV/5min) |
Ampacity in air(A) (A)-Al |
Ampacity in direct-buried soil(A)-Al |
|
1×1.5 |
0.7 |
1.5 |
6 |
— |
3.5 |
— |
— |
|
1×2.5 |
0.7 |
1.5 |
6 |
≤12.1 |
3.5 |
26 |
32 |
|
1×4 |
0.7 |
1.5 |
7 |
≤7.41 |
3.5 |
35 |
42 |
|
1×6 |
0.7 |
1.5 |
7 |
≤4.61 |
3.5 |
45 |
54 |
|
1×10 |
0.7 |
1.5 |
8 |
≤3.08 |
3.5 |
59 |
69 |
|
1×16 |
0.7 |
1.5 |
9 |
≤1.91 |
3.5 |
78 |
90 |
|
1×25 |
0.9 |
1.5 |
10 |
≤1.20 |
3.5 |
100 |
115 |
|
1×35 |
0.9 |
1.5 |
12 |
≤0.868 |
3.5 |
125 |
135 |
|
1×50 |
1.0 |
1.5 |
13 |
≤0.641 |
3.5 |
150 |
165 |
|
1×70 |
1.1 |
1.5 |
14 |
≤0.443 |
3.5 |
190 |
200 |
|
1×95 |
1.1 |
1.5 |
16 |
≤0.320 |
3.5 |
230 |
240 |
|
1×120 |
1.2 |
1.5 |
18 |
≤0.253 |
3.5 |
370 |
275 |
|
1×150 |
1.4 |
2.0 |
21 |
≤0.206 |
3.5 |
310 |
310 |
|
1×185 |
1.6 |
2.0 |
23 |
≤0.164 |
3.5 |
360 |
355 |
|
1×240 |
1.7 |
2.0 |
25 |
≤0.125 |
3.5 |
430 |
410 |
|
1×300 |
1.8 |
2.0 |
34 |
≤0.100 |
3.5 |
495 |
465 |
|
1×400 |
2.0 |
2.1 |
37 |
≤0.0778 |
3.5 |
590 |
535 |
|
1×500 |
2.2 |
2.2 |
41 |
≤0.0605 |
3.5 |
685 |
610 |
|
1×630 |
2.4 |
2.3 |
45 |
≤0.0469 |
3.5 |
800 |
695 |
|
1×800 |
2.6 |
2.4 |
46 |
≤0.0367 |
3.5 |
930 |
785 |
|
1×1000 |
2.8 |
2.6 |
51 |
≤0.0291 |
3.5 |
1050 |
875 |
The cable is built around four functional layers that work together during normal operation and under the specified fire-test conditions. The aluminum conductor carries the electrical load, while the insulation provides electrical separation. A dedicated fire-resistant layer helps protect the circuit when exposed to high temperature, and the PVC sheath forms the outer protective surface.
Aluminum is used as the current-carrying conductor. Its lower density compared with copper can be relevant to cable weight and handling, particularly on long cable routes. However, aluminum conductors require appropriate sizing and compatible termination components. Current capacity, voltage drop and installation conditions should be considered before selecting the conductor cross-section.
The fire-resistant layer is intended to provide thermal protection to the electrical core during the specified fire exposure. Its function should be distinguished from flame retardancy: flame-retardant materials are primarily intended to limit flame propagation, while fire-resistant cable constructions are evaluated for maintaining circuit operation under defined fire-test conditions.
The insulation provides the required electrical separation around the conductor, while the PVC sheath protects the finished cable from normal external contact during handling and installation. The insulation and sheath thicknesses shown in the table vary with conductor size and form part of the cable's dimensional specification.
For fire-related power circuits, cable performance cannot be evaluated by flame resistance alone. Electrical continuity, insulation condition, conductor resistance and the applicable fire-test conditions all need to be considered together. The supplied product data specifies a 3.5 kV/5 min test voltage and provides separate current-carrying values for installation in air and direct-buried soil.
The supplied product information specifies a 90-minute fire-resistance performance under a 750 °C test condition. This value should be understood as a test result associated with the specified cable construction and test method rather than a universal statement that the cable will maintain power for the same duration under every real fire. Project approval should be based on the applicable test report and local fire-safety requirements.
Conductor DC resistance is listed in the technical table for the applicable aluminum conductor sizes. The ampacity figures are provided separately for installation in air and direct-buried soil because heat dissipation changes with installation conditions. Actual cable sizing may also require consideration of ambient temperature, cable grouping, burial conditions, route length and allowable voltage drop.
The listed 3.5 kV/5 min value represents the specified test voltage and duration in the supplied product data. Withstand-voltage testing is used to check the insulation system under the defined test condition. Product documentation and the applicable manufacturing standard should be reviewed when the cable is submitted for project approval.
Cable selection should start with the electrical load and then be checked against the actual installation environment. For emergency and fire-related circuits, the required fire-resistance duration and applicable construction requirements should also be identified before the cable is ordered.
The nominal cross-section should be selected according to operating current, voltage drop and installation conditions. For long-distance circuits, voltage drop can become an important sizing factor even when the conductor's current-carrying capacity is sufficient. The final selection should therefore be based on the complete circuit design rather than ampacity alone.
When installed in cable trays or other open routes, heat dissipation, cable spacing, ambient temperature and the number of loaded cables can affect the allowable current. The air ampacity values in the table provide product reference data and should be applied together with the relevant installation standard.
For direct burial or underground cable-trench installation, soil thermal conditions, burial depth, cable spacing, drainage and mechanical protection should be considered. The direct-buried ampacity values in the table are installation-specific reference values and should not be treated as a substitute for project-specific cable calculations.
Aluminum conductors should be connected using terminals, lugs or connectors suitable for aluminum conductors and the specified electrical load. Correct conductor preparation and compression are important at the joint because an improperly prepared termination can create additional contact resistance and local heating.
Aluminum PVC Fire Resistant Power Cable can be specified for low-voltage distribution circuits where continued electrical service during a defined fire condition is part of the project requirement. Typical applications include selected emergency power circuits, fire-related electrical loads, public buildings, industrial facilities and underground distribution routes.
The cable can be used for designated emergency power circuits where the cable system is required to maintain circuit operation for a specified period during fire exposure. The required fire-resistance level should be confirmed from the project design and applicable local regulations.
Applications may include selected power circuits in hospitals, schools, commercial buildings and other facilities where emergency electrical systems are installed. Whether a particular cable construction is required depends on the building design, fire strategy and applicable electrical and fire codes.
In factories and industrial facilities, the cable can be considered for emergency distribution, fire-related equipment and other low-voltage circuits where an aluminum conductor and defined fire-performance requirement are specified. Cable size should be matched to the electrical load and installation route.
The available larger conductor sizes can be considered for underground distribution routes and cable trenches where the installation design permits this cable construction. Burial conditions, mechanical protection and thermal dissipation should be checked before installation.
Qiancheng Cable operates its own cable production workshops and testing facilities. The manufacturing process covers conductor processing, insulation extrusion, application of the fire-resistant layer and outer sheath extrusion. Relevant production and inspection records provide a basis for controlling finished-cable dimensions and electrical characteristics.
Qiancheng Cable holds a National Industrial Cable Production License together with ISO9001 Quality Management, ISO14001 Environmental Management and ISO45001 Occupational Health and Safety certifications. These documents provide information about the company's production and management systems and can be reviewed during supplier qualification.
For project procurement, the cable should be checked against the actual electrical and fire-safety specification rather than selected only by product name. The following information is useful when requesting a quotation or technical submission: required conductor cross-section, operating voltage, load current, cable length, installation method, ambient or soil conditions, cable grouping, allowable voltage drop and required fire-test condition.
Where the cable is being submitted for a construction project, the purchaser can also request the applicable technical data, test documentation and qualification certificates for review. This allows the selected construction and test requirements to be checked before production and installation.
Fire resistance concerns the ability of a cable circuit to continue operating for a specified period under defined fire-test conditions. Flame retardancy mainly concerns limiting the spread of flame along the cable. A cable may have flame-retardant properties without being classified for the same fire-resistance performance.
Aluminum provides a lower-density conductor option for low-voltage power distribution. It can be relevant where cable weight and handling are considerations. Because aluminum has different electrical and connection characteristics from copper, conductor sizing and termination components should be selected accordingly.
The supplied product information specifies 90 minutes under a 750 °C test condition. This refers to the defined test condition for the specified cable construction. It should not be interpreted as a guarantee of identical circuit performance in every real fire because actual results depend on installation, fire exposure and the applicable test method.
The selection should consider load current, voltage drop, cable length, installation method, ambient conditions, cable grouping and the required fire-performance level. The ampacity values listed in the table provide reference data for installation in air and direct-buried soil.
The product data includes ampacity values for direct-buried soil. Actual suitability should still be confirmed according to the cable construction, burial conditions, mechanical protection, soil thermal characteristics and applicable installation requirements.
The terminal or connector should be suitable for aluminum conductors and the specified load. Proper conductor preparation and compression are important to maintain a reliable electrical connection and avoid excessive contact resistance or localized heating.
Depending on the project requirements, technical data, product test documentation and company qualification certificates can be provided for supplier and product evaluation. For fire-related applications, the relevant fire-test documentation should be reviewed together with the project specification before approval.
Address
Qiancheng Cable Co., Ltd., Hengde Industrial Park, Gucheng County, Hengshui City, Hebei Province, China
Tel
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