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power system protection enclosure: 

power system protection enclosure

This picture shows a power transformer in an HV substation

Line Protection with GE relay

Hardware failure for CMC 356: Warning! The hardware self-test identified that the following current generators are out of tolerance or defective:
Current output / Group
The affected group will be disabled now. All generators of the non-affected groups can still be used.
Caution! Although the affected groups are disabled now they might carry dangerous currents! might carry dangerous currents!
If the problem persists it is highly recommended to send in the test set for repair. Online operation is enabled anyhow.

Areva or Schneider Electric relays in a cubicle

Substation Automation system and SEL relays in a substation

BBC Overcurrent relay

Microelecttrica sciendtifica Milano Italia

Philosophy of good relay protection settings for machines and plants – on photo: ABB Protection relay REF 542 Plus

SIEMENS SIPROTEC 4 Relay

SIEMENS SIPROTEC 5 Relay

Online SIEMENS SIPROTEC 5 relay

SIGRA 4 needs a serial number to activate; you can register your DIGSIwith a valid serial number along with SIGRA 4 software