ABB REX 521 Feeder Protection Relay

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★Product Details

Part Number: ABB REX 521

Manufacture :ABB

Product origin : Sweden

Condition : Brand new

★Product Overview

Scope: Protection, control, measuring and supervision in medium voltage networks and for protection of large or medium-size three-phase a.c. motors

The feeder protection relay REX 521 is designed for protection, control, measuring and supervision in medium voltage networks and for protection of large or medium-size three-phase a.c. motors in circuit breaker controlled motor drives. Typical applications include incoming, outgoing feeders and motor feeders as well as substation protection. Further, the relay can, e.g., be applied as back-up protection of power transformers and back up for high-voltage line-protection relays.

With pre-made, standard configurations the unit can be used in different types of networks and the typical applications include incoming and outgoing feeders in radial isolated neutral, resonant earthed, solidly earthed and resistively earthed systems.

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