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Mitsubishi Expands Lineup Of Integrated 400V AC-output Station Inverter





Mitsubishi expands lineup of integrated 400V AC-output
station inverter



Mitsubishi Electric has announced that it would launch a new
integrated Station Energy Saving Inverter (S-EIV) with 400V AC-output for
converting surplus regenerative energy from train braking into AC electricity
for station facilities. The new 400V AC S-EIV facilitates easy installations
and more energy-efficient operations, even at train stations with high-load
demands of 400V power distribution circuits. The company also announced that
the new S-EIV will be installed at Tokyo Metro Co. Ltd. train stations serving
urban Tokyo.

The new S-EIV offers 400V AC-output with the same dimensions
as its 200V AC predecessor. Also, its new multifunctional step-up transformer
acts as a filter reactor to reduce harmonics in AC output. Front access for
easy cabling and maintenance enables diverse installation options. Reliability
has been improved by adding protection and monitoring functions. A new
earth-fault detection circuit quickly identifies unexpected current flows to
the earth via the unit’s enclosure due to degraded or damaged insulation,
ensuring safe grid-interconnection and durability for outdoor, along with the
enclosure’s dustproof, splash-resistant and rust-resistant design. Improved
monitoring of main circuit devices and grid voltage contribute to system
stability and easy maintenance.

Compared to 200V AC systems, 400V AC systems are deployed
for distribution circuits in stations with especially large loads to suppress
voltage drops and reduce distribution loss, to efficiently power elevators or
escalators. Due to its compatibility with 400V AC systems, the new model does
away with the existing 200V AC S-EIV’s step-up transformer. The new 400V AC
S-EIV will make it easier for railway companies to adopt S-EIVs for stations
with large loads. Mitsubishi Electric’s new model and existing 200V and battery
models offer a wide range of solutions.







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