Insulators LK 70/20-III, LKK 70/20-III 20kV 70kN Linear suspension rod polymer insulators

Product Overview

Linear suspension rod polymer insulators of the LK 70/20 and LKK 70/20 types are designed for the insulation and fastening of wires and ground wires of overhead power lines and busbars of switchgear at power plants and AC substations with voltages up to 20 kV.

These insulators can be used in both support and tension insulator hangers. LKK insulators , which are resistant to acid corrosion, are manufactured using an ECR fiberglass rod , which is used to prevent insulator failure due to acid corrosion of the rod in cases of depressurization of the protective shell due to vandalism or careless handling. Thus, LKK insulators offer increased resistance to vandalism and, accordingly, greater reliability.

Key Technical Parameters

المواصفات الفنية
Electrical data
(1)Nominal Voltage 20kV
(2)Lightning Impulse Withstand
Voltage (1.2kV/50μs Peak value) 75kV
(3)Dry 1 min Power Frequency Withstand
Voltage(rms) 42kV

Mechanical data
(1)Specified Mechanical Load 70kN

Dimensions
(1)Section Length 438±10mm
(2)Dry Arc Distance 237±10mm
(3)Creeapage Distance ≥575mm

Insulator Color:Gray
Standard: IEC 61109 etc.

Performance Characteristics

Strong anti-pollution ability, suitable for operation in heavily polluted regions.
Light weight, simplified transportation and installation procedures.
High mechanical tensile strength, ensuring stable operation under rated load.

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