Db Power Electronics [P] Ltd. Offers Harmony El Energy Saving Solution. The Db Power Electronics [P] Ltd. Is an ISO 9001-2000 certified company. The product comes with a three phase input and three phase output. The electronic load bank is useful for the testing of Diesel Generators, Gas Turbines etc. The product can feed the generated power during the testing process back to the Grid, with its Grid interactive feature. The Harmony El Energy Saving Solution can save a huge amount of power.