| Shuichi Kikukawa | Switchgear Design Dept., Power & Industrial Systems Div., Power Systems, |
| Kenji Tsuchiya | Switchgear Design Dept., Power & Industrial Systems Div., Power Systems, |
| Satoru Kajiwara | Switchgear Design Dept., Power & Industrial Systems Div., Power Systems, |
| Akira Takahama | Electrical Solution Business Div., Power & Industrial Systems Div., Power Systems, |
As the demand for power has continued to grow in cities and other areas of concentrated power consumption, costs are rising due to the lack of sites to locate 6-kV distribution substations and increasingly congested distribution conduits. This has led to a demand for power supply systems and equipment that can boost distribution per line capacity from 6 kV to 22 kV, that can deliver loads close to where the power is consumed, and minimize power losses in distribution which reduces CO2 emissions and thus helps mitigate global warming. Standing in the way of greater deployment of 22-kV switchgear is that the equipment is larger and more costly than prevailing 6-kV equipment. To address this situation, Hitachi, Ltd. joined forces with The Tokyo Electric Power Co., Inc. to develop more compact and less expensive 22-kV distribution equipment.
 | The Hitachi Hyoron (Japanese Only) |
22-kV distribution, hybrid switchgear, mini substation, 3N transformer, 22-kV PMT
