G59 monitoring & remote control

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In our experience at Solar Group, O&M providers assign almost no importance to the monitoring of G59 relays, we think it is very important and forms a vital part of any O&M service, the benefits are made clear below.image41

Alarms and alerts & logs

If the G59 relay, circuit breakers or DNO supply operates it is vital to know of this immediately as all/some production will be halted until the HV network is reinstated, this naturally has a massive effect on availability guarantees and asset managers will be hounding the O&M provider for details almost immediately.

In our experience most O&M providers rely on their own monitoring systems to alert them to these outages, these can be ambiguous and nearly always need an experts interpretation of the data to diagnose there has been a HV outage this naturally quite often has a significant delay to the reinstatement of the supply.

Our solution to this problem is to fit a separate monitoring solution solely for the G59 relay that does not share a common power supply or internet service of the existing monitoring, this solution immediately sends out unambiguous alerts detailing the exact problem:

  • G59 event
  • Circuit breaker operation
  • Loss of supply

The monitoring system can be accessed from a web portal, that details the exact condition of the equipment and the reasons for operation of the system, and in most cases these systems can be remotely operated to restore the supply.


Full logs are stored of all events and are easily retrievable from the web portal, so asset managers are easily kept happy!

Any O&M provider not utilising these systems are undoubtedly wasting time and money, we of course are happy to fit these systems and train staff in there use or operate these systems as part of an O&M package.

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