I. Product Overview
Technical requirements for the design, manufacturing, and use of cable sheath protection earthing boxes, direct earthing boxes, cross-connection boxes, and sheath insulation monitoring boxes.
Section II: Execution Standards
International Standard IEC60364, International Standard GB16895
Section 3: Application Scope
System rated voltage: 10KV
Nominal Cable 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 single-phase if applicable.
IV. Factory Testing (Test Standard JB8144)
Direct Current (DC) Dielectric Strength Test: 5.5KV, 1 minute, no arc-over, no breakdown.
2. Impulse Voltage Test: Peak 10KV, 10 times each for positive and negative poles, no flashover, no breakdown.
3. Insulation resistance test between the copper nose and the housing: not less than 20MΩ.
4. Contact Resistance Test for Copper Noses: Not greater than 20uQ.
V. Installation Method
Wall-mounted, buried, bracketed, freestanding, concealed (flush-mounted), etc.
Section 6: Material Used for the Case
Stainless Steel 304, SMC Composite, DMC Glass Reinforced Plastic.
Section 7: Enclosure Operating Environment
Temperature: -25-40℃
Altitude: Below 3,000 meters; please specify if above 3,000 meters.
Protection Ratings: IP55, IP56, IP65, IP66, IP68, etc.
Section 8: Installation Process
1) Strip the cable insulation to match the exposed wire length to the length of the terminal socket holes.
2) Clear the items inside the box.
3) Remove the terminal blocks inside the box, then crimp the stripped and cut ground cable to the terminal blocks, and finally insert the terminal blocks into the box's entry port and secure them with screws.
4) After securing the first cable, thread the second cable through, repeat step 3 until all four cables are securely fastened.
5) Fill the rubber gasket between the conduit and cable, and secure the cable in the center of the conduit.
6) Seal the cable outlet with waterproof tape.
7) Shrink the heat shrink tubing onto the conduit.
8) Seal both ends of the heat shrink tube with rubber-insulated tape.
9) Wrap PVC tape over the waterproof belt, partially overlapping to cover two layers.
10) Clear items inside the box.
11) Secure the sealing pad and lid, ensuring not to tighten the screws all at once. Tighten them in three stages, turning each screw three times. Failure to do so may cause the lid to deform.
12) Simply secure the case to the designated location.
