The flame retardant performance of wires and cables is directly related to the safety of people's lives and property in fields such as construction, rail transit, data centers, and household appliances. Once a fire occurs, it is crucial to prevent or delay the spread of flames along the cable.Wire and cable vertical combustion instrumentIt is a specialized safety testing equipment designed according to strict international standards, used to scientifically evaluate the flame retardant performance of a single insulated wire or cable in a vertical laying state, and is a key defense line for building fire safety.

The core task of a vertical combustion instrument is to simulate flame invasion and evaluate flame retardancy levels. It burns vertically fixed cable samples for a specified time under controlled laboratory conditions using standardized flames, and objectively evaluates their flame retardant ability by observing and measuring the degree of cable combustion.

1. Standardization of experimental conditions and strong comparability of results

The instrument strictly specifies the height, temperature, gas flow rate, angle between the burner and the sample, and combustion time (usually 60 seconds) of the flame. This highly standardized testing condition ensures that cables produced by different batches and manufacturers can be compared for flame retardant performance under the same benchmark, with fair and reproducible results.

2. Clear key indicators and objective evaluation

The core evaluation indicators for testing are carbonization height and self extinguishing time. After the combustion stops, measure the maximum distance at which the flame spreads upwards (carbonization height), and record the duration of the cable's own combustion after removing the flame (self extinguishing time). These quantitative data provide clear and objective basis for the classification of flame retardant levels of cables.

3. Structural expertise, safe and reliable

Combustion instruments are usually made of high-temperature resistant metal materials and equipped with transparent observation windows for safe observation of the combustion process. Integrated with automatic ignition, precise timing, and exhaust system, ensuring safe and controllable testing process, timely exhaust of exhaust gas, and guaranteeing the safety and health of operators.

4. Promote material progress and ensure public safety

This test is a mandatory safety inspection item that must be passed for wire and cable products, especially special cables such as flame retardant, low smoke and halogen-free, before entering the market. It encourages manufacturers to continuously improve the formulation of insulation and sheath materials, enhance their flame retardant performance, and provide higher levels of fire safety protection for public places such as buildings and transportation.

The vertical combustion instrument for wires and cables is a touchstone for ensuring that power transmission lines "hold their defense line" in the event of a fire. It uses scientific testing methods to screen out truly flame-retardant safety cables, building a crucial technical barrier for preventing the spread of fires and reducing loss of life and property. It is the guardian of the public safety system.