| 摘要 |
<p>PURPOSE:To reduce installation area by connecting three circuit breakers in series through current transformers and disconnecting switches between a pair of main buses then regulating the height of lead terminal of the circuit breaker and the installation height of the main bus. CONSTITUTION:Circuit breakers 2A-2C are connected in series through current transformers 3A-3C and disconnecting switches 4A-4C between main buses 1A, 1B. The circuit breakers 2A, 2C are connected through lead terminal 2At1, 2Ct2 having low height H2, current transformers 3A1 3C2, disconnecting switches 4A1, 4C2 with the main buses 1A, 1B. Lead terminal 2At2, 2Ct1 having high height H1 are connected through current transformers 3A2, 3C1, disconnecting switches 4A2, 4C1 with conduits 5, 7. The circuit breaker 2B is connected through lead terminals 2Bt1, 2Bt2 having high height H1, current transformers 3B1, 3B2, disconnecting switches 4B1, 4B2 with the conduits 7, 5. By such arrangement, the area of installation face 9 is reduced resulting in a 1X1/2 type unit which can be installed with low cost.</p> |
