Cross Interconnect Grounding Box

Product description

Used in 66kV, 110kV or 220kV power systems, it can protect the sheath insulation of high-voltage cables from overvoltage damage. The main protector inside the product adopts ZnO cable sheath protector, and the sealing structure adopts silicone rubber seal to achieve higher Sealed waterproof requirements. The cross-connection grounding boxes are all made of cast aluminum or stainless steel, and the conductor connections are made of tinned copper bars, which are crimped by bolts. The installation is simple, and it is convenient for the cable metal sheath to be disconnected from the protector during preventive testing. The protective grounding box can be installed for outdoor operation and is not affected by various abnormal climates.

According to the standard

GB50217-2007 "Code for Design of Electric Power Engineering Cables"

Main performance indicators

·60s DC withstand voltage: 10kV

·Ubc 1mA: 4.5kV

·8/20us, 10kA impulse current residual voltage: ≤9.5 kV (peak)

·2ms square wave, 18 times: 400 A (peak)

·4/10us impulse current: 65 kA (peak)

·Applicable grounding cable cross section: ≤240mm2

Product number

ZJJD type, direct grounding box, used for direct grounding of cable sheath.

BHJD type, protective grounding box, used for protective grounding of cable sheath.

JHJD type, cross-connection grounding box, used for cross-connection protective grounding of the metal sheath in the middle of the cable.