Hard hat's 5 performance

(1) Electrical Insulation Performance of the Helmet: During testing, the leakage current must not exceed 1.2 mA. This ensures that the helmet provides effective protection against electrical shocks in hazardous environments.

(2) Fire-Retardant Performance of the Helmet: When tested according to standard procedures, the helmet should not burn continuously for more than 5 seconds, and the shell must remain intact without any signs of burning or melting.

(3) Lateral Rigidity of the Helmet: Under specified testing conditions, the maximum deformation of the helmet should not exceed 40 mm, and the residual deformation after removal of the load should not be more than 15 mm. Additionally, the shell must not come off during the test.

(4) Antistatic Performance of the Helmet: The surface resistance of the helmet must be no greater than 1Ω × 10⁹. This ensures that static electricity is effectively dissipated, reducing the risk of sparks or electrostatic discharge in flammable environments.

(5) Low-Temperature Performance of the Helmet: After being pre-treated at -20°C, the helmet must pass an impact test where the force transmitted to the head form does not exceed 4900 N. The shell must not break into fragments. A second sample is also tested under the same low-temperature conditions, followed by a puncture test. In this test, the steel cone must not touch the head form, and the shell must remain securely attached without detachment.

China Labor Insurance Network