Selection of 10kV cable branch box

With the rapid development trend of power energy modernization construction, power grid transformation has been started in many directions. When the underground main line task cable must maintain multiple control loop branch distribution equipment at a certain distance, the selection of cable branch box as the key supporting equipment of distribution equipment is a method of economic development and convenient safety.

Model selection of 10kV cable branch box

(1) The gas insulation layer type of the main material of the heat shrink material, which is an initial commodity and has been replaced.

(2) The main material of the rubber and plastic insulation board coat is used as a safety protection cable branch box. In the long-term operation, it is easy to produce the inner page separation and exposed edge cracking, so that the insulation layer and sealing damage, so the development trend of the product is limited.

(3) The cable terminal head of the EPDM main material is a sealed cable branch box. Its material is hard, and EPDM is an flammable raw material, easy to produce creepage or arc is very easy to ignite, in addition, waterproof, moisture-proof and aging resistance characteristics are also poor, can not meet the long-term operation maintenance free provisions. EPDM is a toxic substance and has adverse conditions for environmental protection.

(4) induction power pluggable cable terminal head cable branch box. In China’s power supply and distribution system for the three-phase transformer power supply system, it is unlikely to ensure that the other induction of power unplugging, so unplugging may lead to a more serious deviation of the neutral line, in the short term to produce a two-phase power supply system, more serious lead to large-scale power failure safety accidents, the power supply system and machinery and equipment to produce excess property losses.

(5) silicone main material cable terminal head flood control cable branch box. Its soft material, with high elasticity, high density, full insulation, raw material sealing characteristics, to achieve waterproof, moisture, aging resistance, flame retardant, resistance to corona discharge and long-term operation maintenance-free advantages. Due to the transition of silica gel and cable, the axial folding precision is high, and it is not easy to separate the inner page from the thermal expansion and contraction, resulting in internal creepage penetration. In addition, there is a long-term axial working pressure on the cable itself, so that the inner page fusion is inseparable. In addition, silica gel is essentially a non-toxic raw material, which is also beneficial to environmental protection.

(6) Cable branch box with SF6 high voltage load switch off. Because the product can maintain the role of the inflatable cabinet, and the price is smaller than the inflatable cabinet, it has the key effect of replacing the main station in the outdoor, which is conducive to the maintenance of the experiment and maintenance of the branch route, and the characteristics of reducing the loss of the power failure property, especially in the difficult situation of the route aisle and the construction of high and low voltage distribution room.