Switchgear

1. A switchgear comprising:

a double-bus;

a housing; and

two switch units provided in the housing, each of the two switch units including a vacuum insulated switch performing closing and interrupting, an aerial insulated switch connected to a bus side of the vacuum insulated switch and performing grounding, a bus connection bushing in three phases connected to the bus side and supplying power to the vacuum insulated switch, a cable connection bushing connected to a cable side of the vacuum insulated switch, and an epoxy resin integrally molding the vacuum insulated switch, the aerial insulating switch, the bus connection bushing and the cable connecting bushing together, and wherein:

the bus connection bushing provided in each of the two switch units is connected to a different bus of the double-bus from each other, and

the two switch units are electrically connected at a load side of the cable connection bushing with each other.

2. The switchgear according to claim 1 ,

wherein the aerial insulated switch provided in each of the two switch units further performs grounding.

3. The switchgear according to claim 1 ,

wherein:

each of the two switch units further includes a conductor connection portion connected to a load side cable;

the bus connection bushing provided in the each of the two switch units is arranged at a back side of the switchgear;

the conductor connection portion provided in each of the two switch units is arranged to face with an other conductor connection portion; and

the bus connection bushing and the load side cable are further arranged at the back side of the switchgear.

4. The switchgear according to claim 3 ,

wherein the two switch units are arranged in a stack in a direction substantially perpendicular to a longitudinal direction of the switch unit.

5. The switchgear according to claim 1 ,

wherein:

each of the two switch units further includes a conductor connection portion connected to a load side cable; and

the two switch units are stacked in a longitudinal direction of the switch unit.

6. The switchgear according to claim 5 ,

wherein the conductor connection portion provided in each of the two switch units is arranged in parallel to an other conductor connection portion at a back side of the switchgear, and is connected to the other conductor connection portion by a conductor substantially perpendicular to the conductor connection portion.

7. The switchgear according to claim 1 ,

wherein the two switch units are arranged at positions displaced from a longitudinal direction of the switch unit and a direction substantially perpendicular to the longitudinal direction.

8. The switchgear according to claim 1 ,

wherein the two switch units are adjacently arranged at a lower portion of the switchgear on substantially a same level as each other.

9. The switchgear according to claim 8 ,

wherein each of the two switch units includes a conductor connection portion connected to a load side cable;

the conductor connection portion provided in each of the two switch units is arranged to face with an other conductor connection portion; and

the conductor connection portion is connected to a common cable connection adaptor.

10. The switchgear according to claim 1 ,

wherein the two switch units are adjacently arranged at a lower portion of the switchgear on a different level from each other.

11. The switchgear according to claim 10 ,

wherein each of the two switch units includes a conductor connection portion connected to a load side cable; and

the conductor connection portion provided in each of the two switch units is arranged to face with an other conductor connection portion.

12. The switchgear according to claim 3 ,

wherein the conductor connection portion is adjacently arranged to the other conductor connection portion.