I. Product Overview

Technical requirements for design, manufacturing, and usage of cable sheath protection earthing boxes, direct earthing boxes, cross-connection boxes, and sheath insulation monitoring boxes.

II. Execution Standards

International Standard IEC 60364, International Standard GB 16895

Section 3: Application Scope

System rated voltage: 10KV

Cable Nominal Cross-Section: 25-800 mm²

Rated Frequency: 50Hz, 60Hz

Protective earthing box, direct earthing box, cross-connection box, and sheath insulation monitoring box are for three-phase common body; please specify if single-phase is required.

Four, Factory Testing (Test Standard JB8144)

DC Withstand Test: 5.5KV, 1 min, no arc-over, no breakdown.

2. Impulse Voltage Test: Peak 10KV, 10 times each for positive and negative poles, no arc-over, no breakdown.

3. Insulation resistance test between the copper nose and the housing: Not less than 20MQ.

4. Contact Resistance Test for Copper Noses: Not greater than 20uΩ.

V. Installation Method

Wall-mounted, buried, bracket-mounted, floor-standing, concealed (flush-mounted) styles, etc.

Section 6: Material Used for the Enclosure

Stainless Steel 304, SMC Composite, DMC Glass Fiber Reinforced Plastic.

Section 7: Enclosure Operating Environment

Temperature: -25-40℃

Altitude: Below 3,000 meters; please specify if above 3,000 meters.

Protection Grades: IP55, IP56, IP65, IP66, IP68, etc.

Section 8: Installation Process

1) Strip the cable insulation to ensure the exposed wire length matches the length of the terminal socket holes.

2) Clear items inside the box.

3) Remove the terminal block from inside the box, then crimp the stripped and cut ground cable to the terminal block. Next, insert the terminal block into the box's entry port and secure it with screws.

4) Secure the first cable before threading the second cable. Repeat step 3 until all four cables are properly fastened.

5) Fill the rubber strip between the conduit and the cable, securing the cable in the middle of the conduit.

6) Seal the outlet pipe opening with waterproof tape.

7) Shrink the heat shrink tubing onto the conduit.

8) Seal both ends of the heat shrink tube with rubber insulating tape.

9) Wrap PVC tape over the waterproof strip, partially overlapping to cover two layers.

10) Clear items inside the box.

11) Secure the sealing gasket and lid in place, ensuring that the screws are not tightened all at once. Tighten them in three stages, turning each screw three full turns. Otherwise, the lid may deform.

12) Simply secure the box to the designated location.