ABB REU 523 - Technical Data

Combined overvoltage and undervoltage
relay
REU 523
1MRS 751123-MBG
5
Technical data 7DEOH(QHUJL]LQJLQSXWV
Rated frequency 50/60 Hz ±5 Hz
Rated voltage, U
n
100/110/115/120 V
Maximum input voltage
- continuously 2 x U
n
- for 10 s 3 x U
n
Power consumption at U
n
< 0.1 VA (typical 0.03 VA)
Thermal withstand capability
- continuously 2 x U
n
- for 10 s 3 x U
n
Input impedance > 4.7 MΩ
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Measured voltages on phases U
12
, U
23
and U
31
as
multiples of the rated voltages of the energizing
inputs
0…2 x U
n
Measuring accuracy (f
n
±5 Hz) at 0.20...2.00 x U
n
±1.5%
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Operating range 18…265 V dc
Rated voltage U
r
= 24/48/60/110/220 V dc
Current drain ~ 2…25 mA
Power consumption < 0.8 W
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Rated voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 3.0 s 15 A
Make and carry for 0.5 s 30 A
Breaking capacity when the control circuit time-
constant L/R < 40 ms, at 48/110/220 V dc
5 A/3 A/1 A
Minimum contact load 100 mA at 24 V ac/dc
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Rated voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 3.0 s 8 A
Make and carry for 0.5 s 10 A
Breaking capacity when the control circuit time-
constant L/R < 40 ms, at 48/110/220 V dc
1 A/0.25 A/0.15 A
Minimum contact load 100 mA at 24 V ac/dc
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Rear interface, connector X2.2 RS-485 connection for the fibre-optic interface
module RER 103
SPA bus or IEC 60870-5-103 protocol
4.8 or 9.6 kbps
Front interface Optical RS-232 connection for opto-cable
1MKC 950001-1
SPA bus protocol
4.8 or 9.6 kbps