Contents1. Application..................................................................... 32. Available functions........................................................103. Differential protection....................................................254. Impedance protection.................................................. 265. Wide area measurement system...................................316. Current protection........................................................ 317. Voltage protection........................................................ 338. Frequency protection....................................................349. Multipurpose protection................................................3410. General calculation...................................................... 3411. Secondary system supervision.................................... 3512. Control........................................................................ 3513. Scheme communication..............................................3714. Logic...........................................................................3915. Monitoring................................................................... 4216. Metering......................................................................4417. Human machine interface............................................4418. Basic IED functions..................................................... 4519. Ethernet...................................................................... 4520. Station communication ...............................................4521. Remote communication.............................................. 4722. Hardware description.................................................. 4823. Connection diagrams.................................................. 5124. Technical data.............................................................5225. Ordering for customized IED......................................12726. Ordering for pre-configured IED.................................13927. Ordering for Accessories........................................... 145DisclaimerThe information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any errorsthat may appear in this document. Drawings and diagrams are not binding.© Copyright 2017 ABB.All rights reserved.TrademarksABB and Relion are registered trademarks of the ABB Group. All other brand or product names mentioned in this document may be trademarks or registered trademarksof their respective holders.1MRK 506 372-BEN -Line distance protection REL670 2.2Product version: 2.22 ABB