Areva MiCOM P921 - Page 66

P92x/EN TD/E11 Technical Guide
Technical Data
Page 20/30 MiCOM P921-P922-P923
3.7.4 Under voltage blocking
- Nominal voltage range : 57-130V
Setting Range Step Size
protection block 5.7 – 130V 0.1
- Nominal voltage range : 220-480V
Setting Range Step Size
protection block 20 – 480V 0.1
NOTE : For P922S the under voltage blocking threshold is fixed to 10%
of the nominal setting voltage range.