Tepco said the reactors shut due to the loss of offsite power due to the malfunction of one of two off-sitepower systems.
电力公司说，由于外部电源厂系统故障，由于外部电源供应问题导致了反应堆停运。
2
The unit can be started with the breaker or switch opened using the generator step-up transformer as a source of off-sitepower.
机组可在断路器或负荷开关打开时，采用发电机升压变压器作为一种非本电厂电源来起动。
3
The quake and tsunami cut the supply of off-sitepower to the plant and diesel generators intended to provide back-up electricity to the cooling system.