Micom P721, Техническое руководство

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Technical Data P72x/EN TD/A11
MiCOM P721/P723 Page 3/18
1. RATINGS
1.1 Power Supply
Nominal auxiliary voltage Vx 24-60Vdc;
48 -250Vdc/ 48-250 Vac
24-250Vdc/ 24-240Vac
Operating range DC: ± 20% of Vx
AC: – 20%, +10% of Vx
Residual ripple Up to 12%
Stored energy time
≥
50 ms for interruption of Vx
Burden Stand by: <3W DC or <8VA AC
Max: <6W DC or <14VA AC
1.2 Frequency
Frequency protection functions
nominal frequency
±
5Hz
Nominal frequency 50/60Hz
1.3 Current Inputs
Phase current inputs 1 and 5A by connection
Earth current inputs 1 and 5A by connection
Operating range Selected at order (Cortec)
Burden Phase Current < 0.025 VA (1A)
< 0.3 VA (5A)
Burden Earth Current < 0.08 VA (1A)
< 0.42 VA (5A)
Thermal withstand 1s @ 100 x rated current
2s @ 40 x rated current
continuous @ 4 x rated current
1.4 Phase and earth current transformers consumption
1.4.1 P72x phase CT consumption
phase transformer 5A
RMS vo
ltage
(V
)
Current (A)
phase transformer 1A
phase transformer 5A
RMS vo
ltage
(V
)
Current (A)
phase transformer 1A