GB/T 18380.11 - 2022 specifies single insulated Wire and cable flame vertical spread test device. The standard details the equipment suitable for this type of test, such as special combustion boxes, and specifies its size, material and internal structure requirements to ensure a stable combustion environment. Specifies the type of ignition device, flame characteristics and adjustment range, and also explains the measurement and observation equipment, such as temperature sensors, camera installation positions, etc. Provide hardware support for single insulated Wire and cable flame vertical spread test through unified device standards, ensure the accuracy and comparability of test data, and help cable product safety performance evaluation