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Isolation Features
Movement: Minimize movement while handling the board to reduce static buildup
Isolation and Wiring
Use: Sends control signals to external field devices in CENTUM DCS systems
ABB REF601 REF 601 Feeder Protection and Control Relay RTD Input Interface Module Isolation FeaturesOverview REF601 is an ABB feeder protection and control relay designed for reliable power system operation, supporting a wide auxiliary voltage range and flexible binary inputs. Power Supply Nominal auxiliary voltage (Uaux): 24240 V AC (50 60 Hz), 24240 V DC Uaux variation: 85110% of Uaux (20. 4264 V AC), 70120% of Uaux (DC) Burden (quiescent operating): < 12. 0 VA Ripple in DC auxiliary voltage: Max 12% of DC value (100 Hz) Maximum interruption time:
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