The difference and function of cable branch box

The main difference between a touch cable connector and a live non-touch cable connector is that the silicon rubber cable connector of the former has a semiconductor shielding layer inside and a conductive shielding layer outside. It is connected to the ground through a financial hoop to ensure that the surface potential of the cable connector is the same as the ground. ; The latter is also a silicone rubber cable joint. Through the actual measurement results, both of the voltages to the ground are zero, but in actual operation, the surface of the latter may induce static electricity. If it is used in the parallel operation of multiple circuits inside the substation, it is necessary to detect one of the circuits, and when the adjacent circuits are running with electricity, the use of touchable cable connectors is beneficial to safety. But when used in the cable branch box, there is no such problem at all, because the design is a maintenance-free product, there is no secondary circuit in the branch box that needs maintenance and repair, and the branch box shell is IP33 protection level, and the box body has been reliably grounded. , It is not allowed to open the shell of the branch box during live operation, and there is no possibility of touching the cable joints inside the branch box with power on. Even under the infringement of force majeure (such as a strong collision with foreign objects such as cars), the use of touchable and non-touchable cable joints will have the same result. From the perspective of reliability in operation, the touchable cable joint is covered with a conductive layer and grounded by a metal hoop, so there is no external insulation creeping distance. The outer layer of the inaccessible cable joint is a strong insulating silicone rubber, and there are still many external insulation creeping distances. Obviously, under the same circumstances, the operating reliability of the non-touchable cable connector is higher than that of the touchable cable connector. From an economic point of view, the price of non-touchable silicone rubber cable connectors is also lower than that of touchable cable connectors. Therefore, it is ideal to use non-touchable silicone rubber cable joints.

35KV European cable branch box

35KV European-style cable branch box, with its excellent performance, standardized design, and beautiful appearance, is widely used in cable engineering equipment in cable distribution network systems. It is widely used in major industrial parks, residential quarters, urban densely populated areas, and commercial Various places such as centers and high-rise buildings are generally recognized. It opens the door in two directions and uses the butt sleeve as the connection bus. It has the advantages of short length and clear cable arrangement. Generally, the rated current is 630A, and the bolt connection type cable joint is used.

Adapt to the environment

Ambient temperature: highest temperature: +40℃, lowest temperature -30℃ Wind speed: equivalent to 34m/s (not more than 700Pa) Humidity: the average daily relative humidity is not more than 95%.
The average monthly relative humidity is not more than 95%. Anti-vibration: the horizontal acceleration is not more than 0.4m/s2, and the vertical acceleration is not more than 0.15m/s2. The inclination of the installation site: not more than 3°.
Installation environment: The surrounding air should not be significantly polluted by corrosive, flammable gas, water vapor, etc., and there should be no severe vibration at the installation site.

AHMP12/24kV 630A H-type busbar

AHMP12/24kV 630A H-type busbar butt sleeve is used for European-style cable branch box, connected with the European-style front connector. Provide more branch circuits for branch cable branch pipes, made of high-quality EPDM rubber.

standard packaging

H-type butt sleeve
Dust cap (non-insulating protective cap)
Installation instructions
Product certification

Structure chart:

AZTS-25KV/250A Straight connector