Product Description
DFW8-12/630 series cable branch box with load switch adopts SF6 gas-insulated three-position load switch, with external American/European-style full-insulation cable joint, the inlet and outlet wires of switch areled out from the sleeve. Suitable for underground distribution system of 3-12kv, it is the ideal equipment for renovation of urban power grid, not only retains the advantages of traditional branch boxes, but also possesses some merits of ring main unit:
XL-21 Type low voltage power distribution cabinet is applicable to power station and industrial and mining enterprise, used for power distribution in three-phase four-wire or three-phase five-wire system with AC 500V and below. It is installed indoors and near the wall. Repair before shield. Shell is bent with steel plate. Knife switch operation handle is installed to the upside of right column of cabinet front, can be used for switching power. Choose different types and circuit breakers with different current grades to user's specific requirements.
Technical paraments
| Rated voltage(kv) |
rated current(A) |
rated frequency(HZ) |
rated short circuit closing current(kA) |
rated short time withsatnd current(kA) |
rated peak withsatnd current(kA) |
| 12 |
630 |
50 |
50 |
|
50 |
| operation mechanism |
rated transfer current |
1min power frequency withstand voltage |
lighting impulse withstand voltage |
mechanical life |
BAR standard charged pressure of SF6gas (20ºC) |
annual leakage ratio of SF6gas |
AC/DC220V,
AC/DC110V,
D4C8V,
DC24V |
1800 |
42
48 |
95
110 |
2000times |
0.4 |
|
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