The quake and tsunami cut the supply of off-site power to the plant and diesel generators intended to provide back-up electricity to the cooling system.

这次强烈的地震和海啸毁坏了电厂的外部电源和以柴油为动力的后备电源。这些电源是用于和电站紧急情况下为冷却系统提供电力供应的电源。

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Officials also said they were hoping that they would restore "as soon as possible" the power supply to the plant, which is needed for the cooling system and back-up generators.

有官员表示他们寄希望于能够尽快恢复电站的动力供应，以便能够冷却系统和备用发电机。

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The system was suitable for VRLA battery used in telecommunication, electric power, railway engine and UPS for back-up and starting.

该系统适应于电信、电力、铁路机车及中大型UPS等后备方式和起动使用情况下的蓄电池监测管理。

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What caused the disaster was the tsunami which shut down their back-up power system.

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This means that if energy is required on a constant basis then the system needs to be backed-up by conventional sources of power 73% of the time, and there are days when the back-up system is required for more than 90% of the time (In Germany, the industry association insists that renewables uptime averages 10%).

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