DWF-12 high-voltage electricity into the two branch box a branch cable boxes _ Electrical Equipment

 □ General Continental cable branch box is widely used in power in recent years in the cable distribution network systems engineering equipment, its main feature is a two-way door, use wall bushing as the connection busbar, with a small, clear cable arrangement, Three-core cable does not require the large span crossing and other significant advantages. Their use of cable connectors products meet DIN47636 standards. Generally the rated current of 630A bolted connection cable connector. Model and meaning □ □ □ products adapt products to adapt to the environment of the environment 1, ambient temperature: the maximum temperature of + 40 ℃, the lowest temperature of -30 ℃ 2, Winds: Pretty 34m / s (not more than 700pa) 3, humidity: daily average relative humidity less than 95%, the monthly average relative humidity less than 95% 4, shockproof: horizontal acceleration is not greater than 0.4m / s2, the vertical acceleration is not greater than 0.15m / s2 5, the installation site gradient: less than 3 ° 6, the installation environment: ambient air should not be obviously polluted corrosive, flammable gas, vapor, etc., the installation site without severe shock project parameters Rated voltage 12kV rated current of 630A 1 minute power frequency withstand voltage 42kV lightning impulse withstand voltage 105kV 15 min DC voltage 52kV withstand current 50kA / 0.3s thermal current 20kA / 3s Case protection grade Ip33 □ DWF12 / 630A B- □ type can touch cable distribution boxes Accessories □ European branch box installation and commissioning 1, the cable distribution box before installation and operation should be carried out the following checks test 2, pressure test: when is not charged, one minute power frequency withstand voltage 45kV should be no breakdown, flashover Note: Before the test should break open live display or sensor wiring will support insulator The output line to ground, can not take the test MOA 3, live display Check: Boost to 5kV indicator should light, the indicator should be boosted to 10kV bright 4, 5 installed base, cable distribution box before installation, Users should be prepared cable channel or pre-completed six firm wells, cable distribution boxes installed base of applications and embedded channel welded on flat ground □ European branch box mounting structure □ □ European branch box wiring scheme European distribution boxes foundation plans