—New Environmental Products—
| Naoki Kawamura | Switchgear Design Dept., Power & Industrial Systems Div., Power & Industrial Systems, |
| Tetsuya Kato | Power Electronics Design & Mfg. Dept., Power & Electronics Devices & Systems Div., Power & Industrial Systems, |
| Yoshimasa Eda | Industrial System Engineering Dept., Power & Industrial Systems Div., Power & Industrial Systems, |
| Hirotaka Takahashi | Signaling & Power Supply Dept., Transportation Div., Power & Industrial Systems, |
To address the need for railway substation systems that are more compact, incur fewer losses and are easier to maintain, Hitachi has already developed smaller and more compact SF6 GIS (gas-insulated switchgear), quieter and more efficient transformers for electric railways, and digitally controlled power switching boards. Recently, to meet the growing demand for equipment that is more environmentally safe, efficient, compact and easy to maintain, we have developed (1) an environmentally friendly silicon transformer with superior disaster-proofing, (2) environmental GIS and compact accumulation-type SWGR (switchgear) that contain no SF6 greenhouse gas, (3) a new eco-friendly rectifier containing no PFCs (perfluorocarbon compounds) in the coolant and which incurs even lower losses, and (4) a BBU (building block unit) capable of online maintenance, achieved by forming the protection controllers as standard units.
 | The Hitachi Hyoron (Japanese Only) |
environmental gas-insulated switchgear, 24-kv accumulation type switchgear, distributed protection control system, silicon transformer, eco-friendly rectifier
