NGT Standing Reserve
22,99 €
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High Quality Content by WIKIPEDIA articles! This is a service that large power users such as steel works, cold stores, large water pumps, can offer to the UK National Grid. These contractors have frequency sensitive relays fitted to the incoming breakers, and these disconnect the load if the system frequency falls beyond a pre-set figure. For example, one site may be at 49.8 HZ, but the relays are all set at slightly different values to ensure a smooth progression of disconnection as frequency falls. These loads are contracted to stay off for a maximum of about 20 minutes. Within twenty…mehr

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High Quality Content by WIKIPEDIA articles! This is a service that large power users such as steel works, cold stores, large water pumps, can offer to the UK National Grid. These contractors have frequency sensitive relays fitted to the incoming breakers, and these disconnect the load if the system frequency falls beyond a pre-set figure. For example, one site may be at 49.8 HZ, but the relays are all set at slightly different values to ensure a smooth progression of disconnection as frequency falls. These loads are contracted to stay off for a maximum of about 20 minutes. Within twenty minutes, Standing Reserve (Reserve Service) diesels of similar capacity (i.e., around 660 MW total) start up, and enable the Frequency Service loads to be re-connected and the relays re-armed.