Areva MiCOM P921 - Page 80

P92x/EN FT/E11 Technical Guide
User Guide
Page 2/110 MiCOM P921-P922-P923
7.6 “CONFIGURATION INPUTS” sub-menu 28
7.6.1 HMI description 28
7.7 "FREQ. and df/dt CONFIG" submenu 29
7.7.1 HMI description 29
8. MEASUREMENTS 30
8.1 Configuration 30
8.1.1 "3Vpn" configuration (3VTs "Phase-Neutral") 30
8.1.2 "3Vpp+Vr" configuration (3 "Phase-Phase" VTs + 1 residual VT) 30
8.1.3 "2Vpp+Vr" configuration (2 “Phase-Phase” VTs + 1 residual VT) 31
8.1.4 "3Vpn+Vr" configuration (3 "Phase-Neutral" VTs + 1 residual VT) 31
8.2 MiCOM P921, MiCOM P922 and MiCOM P923 : common measurements 32
8.3 Specific measurements for the MiCOM P922-MiCOM P923 33
8.3.1 Maximum and average values 33
8.3.2 HMI description 33
9. COMMUNICATION 35
9.1 Rear communication port description 35
9.2 Rear and front communication management 35
9.2.1 Modification through the front panel 35
9.2.2 Modification through the MiCOM S1 software (front port, RS232) 35
9.2.3 Modification through the rear port (RS485) 35
9.3 HMI description 36
9.3.1 Courier Interface 36
9.3.2 Modbus interface 36
9.3.3 Additional menu for P922 and P923 37
9.3.4 IEC60870-5-103 interface 38
10. PROTECTIONS 39
10.1 Undervoltage protection 40
10.1.1 Description 40
10.1.2 HMI description 40
10.2 Overvoltage protection 41
10.2.1 Description 41
10.2.2 HMI description 42
10.3 Zero sequence overvoltage (neutral displacement) protection 44
10.4 Negative sequence overvoltage protection (MiCOM P922 and P923) 46
10.5 Positive sequence undervoltage protection (MiCOM P922 and P923) 47