10kv Three Core / 35kv Single Core Explosion-Proof Box Cable Connector Junction Box

10kv Three Core / 35kv Single Core Explosion-Proof Box Cable Connector Junction Box image

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Basic Info.

Model NO.

VFBH

Trademark

Origin

China

Product Description

The product shell is made of FRP, which is an anisotropic material, plus its formula and additives have a wide range of selectivity. According to the working environment and state of FRP, special flame retardant additives are added to make the FRP material have good resistance. flammability, explosion-proof, corrosion resistance, long life and other advantages. In the environment of -50C-+150ºC, it can still maintain good physical and mechanical capabilities, protection grade IP55, maintenance-free.

No.

Item

Inspection Area

Test result

Content

Structure inspection

The whole machine

Pass

1) The nameplate mark is in accordance with the standard provisions;
2) The structure size is in accordance with the drawings and standards.

Temperature test

Shell, gasket, joint, single core cable joint potting part

Pass

The maximum surface temperatures of the sample shell, gasket, joints, and single-core cable joint potting parts were 63.5°C, 62.4°C, 106.6°C, and 106.1°C, respectively.
Note 1: The cross-sectional area of the test cable is 300mm².

Heat-resistant hardy test

Gasket, cement and single core cable joint potting part

Pass

The sample was placed in an environment with a relative humidity of 90% and a temperature of 90°C for 14 days, and was placed in an environment of 127.0°C for 14 days, then placed at room temperature for 24 hours, and then placed in an environment with a temperature of 30°C for 24 hours, and sealed after the test. There was no obvious change in the sealing part of the mat, glue and single-core cable joint.

Protest against the impact test

Shell

Pass

The shell withstands the impact energy generated by the test object with a mass of 1.0kg falling vertically from a height of 0.7m, and the result is no damaged.

Insulation dielectric strength test

relatively

Pass

1. Test voltage: 21000V;
2. Test time: 60s;
3. Test results: no breakdown, arcing, flashover phenomenon.

Enclosure protection class (IP) test

The whole machine

Pass

Level 4 waterproof test: use a pendulum pipe water spray test device with a total flow of 4.3L/min and a test time of 10min. After the test, check that there is no water in the sample. The interior is completely filled with no cavities, meeting the requirements of class 5 dustproof.

Introduce the device clamp test

introduction device

Pass

A tensile force of 720M was applied to the cable with a diameter of 36.0mm for 6 hours, and there was no displacement.

Surface resistance measurement

The sample piece

Pass

Surface resistance value is 6.58 x 10⁸Ω.

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