ABB REJ 527, Technical Reference Manual

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1MRS 750616-MUM Directional or Non-Directional Earth-Fault Relay
Technical Reference Manual
REJ 527
4.2.3. Technical data
1)
For dimension drawings, refer to the Installation Manual (1MRS 750526-MUM).
Table 4.2.3-1 Dimensions
1)
Width, frame 111.4 mm, box 94 mm
Height, frame 265.9 mm (6U), box 249.8 mm
Depth 235 mm (245.1 mm with a protective rear cover, available as an option)
Enclosure size 1/4 (x 19”)
Weight of the relay ~3.0 kg
Table 4.2.3-2 Power supply
U
aux
rated U
r
=10/120/220/240 V ac
U
r
=48/60/110/125/220 V dc
U
aux
variation 80…265 V ac
38…265 V dc
Relay power start-up time, typical 300 ms
Burden of auxiliary voltage supply under quiescent/
operating condition ~ 4 W/~ 10 W
Ripple in the dc auxiliary voltage Max 12% of the dc value
Interruption time in the auxiliary dc voltage without
resetting the relay < 30 ms at 48 V dc
< 100 ms at 110 V dc
< 500 ms at 220 V dc
Table 4.2.3-3 Energizing inputs
Rated frequency 50/60 Hz
±
5 Hz
Current input
Rated current, I
n
0.2 A 1 A 5 A
Thermal withstand capability
• continuously 1.5 A 4 A 20 A
• for 1 s 20 A 100 A 500
Dynamic current withstand
• half-wave value 50 A 250 A 1250 A
Input impedance < 750 m
Ω
< 100 m
Ω
< 20 m
Ω
Voltage input
Rated voltage, U
n
100/110/115/
120 V
Thermal withstand capability
• continuously 2 x U
n
• for 10 s 3 x U
n
Input impedance > 4.7 M
Ω
Table 4.2.3-4 Measuring range
Measured residual voltage (U
0
) as a percentage of the rated voltage of
the energizing input
0…400% x U
n
Measured earth-fault current (I
0
) as a percentage of the rated current of
the energizing input
0...800% x I
n