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Home ⊙ NEWS ⊙ ABB Relion® 630 series Feeder protection and control REF630
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ABB Relion® 630 series Feeder protection and control REF630

From:ABB | author:Mr.Chen | Time :2025-08-11 | 5 view: | Share:

Feeder protection and control REF630

REF630 has been designed to protect overhead line and cable feeders in utility

and industrial power distribution systems, including radial, looped and meshed

distribution networks, with or without distributed power generation.

Application

REF630 has been designed to be the main

protection for overhead lines and cable feeders,

in either isolated neutral, resistance-earthed,

compensated or effectively earthed distribution

networks. The comprehensive feeder

management relay offers four predefined

configurations, intended for open/closed ring

feeder applications, radial overhead/mixed line

feeder applications, ring/meshed feeder

applications and bus sectionalizers.

The earth-fault protection has been significantly

extended, now including not only directional

and non-directional, transient/intermittent,

wattmetric and admittance-based, but also both

harmonics and multifrequency admittance-based

earth-fault protection. The new additions take

the earth-fault protection to new heights,

creating an extensive earth-fault protection

portfolio. In addition, the sensitivity of the

intermittent earth-fault protection has been

significantly improved and reactive power

undervoltage protection added.

REF630 also includes a fault locator that locates

short circuits in radial distribution networks and

earth faults in effectively and low-resistance

earthed ones. If the fault current is as high as or

higher than the load current, earth faults in

isolated neutral distribution networks will also

be located.

Product highlights

• Extensive earth-fault protection portfolio with

unique multifrequency admittance-based

protection for higher sensitivity and selectivity

• Advanced and fast fault location of short

circuits and earth faults

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