P74x/EN IT/N
(IT) 1-
The P74x supports the following relay management functions in addition to the functions
illustrated above.
• Trip circuit and coil supervision
• 4 Alternative setting groups
• Programmable function keys (P741 and P743)
• Control inputs
• Programmable scheme logic
• Programmable allocation of digital inputs and outputs
• Sequence of event recording
• Comprehensive disturbance recording (waveform capture)
• Fully customizable menu texts
• Multi-level password protection
• Power-up diagnostics and continuous self-monitoring of relay
Application overview
FIGURE 1: FUNCTIONAL DIAGRAM