ABB REJ 527 Technical Reference Manual page 53

Directional or non-directional earth-fault relay
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ABB Substation Automation
Products and Systems
1MRS750616-MUM
Technical Reference Manual
Table 39: Power supply
• Rated voltage
• Operating range
• Relay power start-up time, typical
• Burden of auxiliary supply under quiescent/
operating condition
• Ripple in dc auxiliary voltage
• Interruption time in auxiliary dc voltage without
resetting
Table 40: Energizing inputs
Rated frequency
Rated current I
n
Thermal withstand capability
• continuously
• for 1 s
Dynamic current withstand
• half-wave value
Input impedance
Rated voltage U
n
Thermal withstand capability
• continuously
• for 10 s
Input impedance
Table 41: Measuring range
Measured voltage on phase U
rated voltage of the energizing input
Measured current on phase I
current of the energizing input
50/60 Hz ±5 Hz
0.2 A
1.5 A
20 A
50 A
< 750 mΩ
100/110/115/120 V
2 x U
n
3 x U
n
> 4.7 MΩ
as a percentage of the
0
as a percentage of the rated
0
REJ 527
U
=110/120/220/240 V ac
r
U
=48/60/110/125/220 V dc
r
80...265 V ac
38...265 V dc
300 ms
~ 4 W/~ 10 W
Max 12% of the dc value
< 30 ms at 48 V dc
< 100 ms at 110 V dc
< 500 ms at 220 V dc
1 A
4 A
100 A
250 A
< 100 mΩ
0...400% x U
n
0...800% x I
n
53

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