Areva MiCOM P921 - Page 52

P92x/EN TD/E11 Technical Guide
Technical Data
Page 6/30 MiCOM P921-P922-P923
1. RATINGS
1.1 Voltages
Nominal voltage Operating range
57 – 130V
ph - ph
eff 5 to 260V
ph - ph
eff
220 – 480V
ph - ph
eff 20 to 960V
ph - ph
eff
Duration
Thermal withstand
(Vn = 57 – 130V)
Thermal withstand
(Vn = 220 – 480V)
Continuous 260V
ph - ph
eff 960V
ph - ph
eff
10 seconds 300V
ph - ph
eff 1300V
ph - ph
eff
1.2 Auxiliary voltage
3 auxiliary voltage ranges are available for the MiCOM P921-P922 and P923 relays,
as described below :
Operating ranges
Nominal ranges
Vdc Vac
24 – 60 Vdc 19 - 72 V -
48 – 150 Vdc 38 – 180 V -
130 – 250 Vdc / 100 - 250 Vac, 50/60 Hz 104 – 300 V 88 - 300 V
1.3 Frequency
The nominal frequency (Fn) is dual rated at 50/60 Hz (selection realised into the
« OP.PARAMETERS » menu of the HMI), the operate range is 40Hz to 70Hz.
Nominal value Operating range
50 Hz 40 – 60 Hz
60 Hz 50 – 70 Hz