ABB REU 523 - Page 6

Combined overvoltage and undervoltage
relay
REU 523
1MRS 751123-MBG
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U
aux
rated Ur =110/120/220/240 V ac
Ur =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 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
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Front side IP 54 (flush-mounted)
Rear side, connection terminals IP20
Note! A rear protective cover (accessory part) can be used to protect and shield the rear of the case.
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Width Frame 111.4 mm, box 94.0 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 ~3.2 kg
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Specified service temperature range -10...+55 °C
Storage temperature tests -40...+70 °C according to the IEC 60068-2-48
Dry heat test According to the IEC 60068-2-2
Dry cold test According to the IEC 60068-2-1
Damp heat test, cyclic According to the IEC 60068-2-30
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Dielectric tests According to the IEC 60255-5
Test voltage 2 kV, 50 Hz, 1 min
Impulse voltage test According to the IEC 60255-5
Test voltage 5 kV, unipolar impulses, waveform 1.2/50 µs, source
energy 0.5 J
Insulation resistance measurements According to the IEC 60255-5
Isolation resistance > 100 MΩ, 500 V dc
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Vibration tests (sinusoidal) According to the IEC 60255-21-1, class I
Shock and bump test According to the IEC 60255-21-2, class I
Seismic test According to the IEC 60255-21-3, class 2
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EMC immunity test level requirements consider the demands in the generic standard
EN 50082-2
1 MHz burst disturbance test, class III According to the IEC 60255-22-1
- common mode 2.5 kV
- differential mode 1.0 kV
Electrostatic discharge test, class III According to the IEC 61000-4-2 and
IEC 60255-22-2
- for contact discharge 6 kV