Areva MiCOM P921 - 10. Protections

Technical Guide P92x/EN FT/E11
User Guide
MiCOM P921-P922-P923 Page 39/110
10. PROTECTIONS
To gain access to the “PROTECTION” menu (or “PROTECTION G1” for MiCOM
P922 and P923) from the default display, press once 2 and 4 times 6.
The accessible sub-menus are then indicated below :
· MiCOM P921 :
PROTECTION
82
[27]UNDERVOLTAGE
6
[59]OVERVOLTAGE
6
[59N]RESIDUAL O/V
4 4
· MiCOM P922 :
PROTECTION G1
82
[27]UNDERVOLTAGE
6
[59]OVERVOLTAGE
6
[59N]RESIDUAL O/V
6
[47] NEG SEQ O/V
6
4 4 4 4
PROTECTION G1
…
[27D] POS SEQ U/V
6
[81] FREQUENCY
4
· MiCOM P923 :
PROTECTION G1
82
[27]UNDERVOLTAGE
6
[59]OVERVOLTAGE
6
[59N]RESIDUAL O/V
6
[47] NEG SEQ O/V
6
4 4 4 4
PROTECTION G1
…
[27D] POS SEQ U/V
6
[81] FREQUENCY
6
[81R]FREQ CHANGE
4 4
OF RATE