Grade 1E class K3 cross-linked polyolefin insulated polyolefin sheathed low-smoke zero-halogen flame retardant instrument cable for nuclear power station

This product is manufactured according to Q / 321084cdjt17 standard

The flame retardant characteristics of this product comply with GB / t18380.3 (iec60332-3).

The low smoke and zero halogen characteristics of this product comply with the provisions of GB / t17651 (iec61034), GB / t17650, 2 (iec60754-2).

The main technical indicators of this product comply with the provisions of RCC-E, ieee383, iec189, iec60332, iec61034, iec60754 and other standards.

Product characteristics

Cable rated voltage (UO / U): 300 / 500V

Long term allowable working temperature of cable conductor: 90 ℃: short circuit (duration ≤ SS) temperature 250 ℃.

The ambient temperature during cable laying shall not be lower than 0 ℃, and preheating shall be conducted when the laying temperature is lower than 0 ℃.

The allowable bending radius during cable laying shall not be less than 10 times of the outer diameter of the cable.

Allowable minimum ambient temperature for operation after cable laying: - 40 ℃.

Normal service life of cable: 40 years

Special properties of cables:

(1) The cable can withstand the bunched combustion test specified in GB / t18380.3 (iec60332-3)

(2) The insulated core of the cable can withstand the vertical combustion test specified in GB / t18380.1 (iec60332-1)

(3) The low smoke performance of the cable shall comply with the provisions of GB / TL 7651 (iec61034), and the light transmittance shall be ≥ 60

(4) The halogen-free performance of the cable complies with the provisions of GB / t17650.2 (iec60754-2): pH ≥ 4.3, conductivity < 10 μ s/m

Electrical performance of cables:

(1) The cable can withstand ac2500v / 5min withstand voltage test without breakdown

(2) The conductor resistivity of the cable (P20 ℃) shall not be greater than 0.017241 Ω. Mm ²/ m

(3) Insulation resistance constant of cable: ki20 ℃ is not less than 367om Ω. Km; Ki60 ℃ is not less than 36.7m Ω. Km; Ki90 ℃, not less than 3.67M Ω. Km

(4) The working capacitance of the cable shall not be greater than 100pF / m

(5) The distributed inductance of the electrical system shall not be greater than 0.8 μ H/m

(6) The capacitance of the cable is unbalanced. When the test frequency is 1kHz and the test length is 250m, it is not more than 250pf