7SR220
Directional Relay
Instrumentation Guide
The copyright and other intellectual property rights in this document, and in any model or article produced from
it (and including any registered or unregistered design rights) are the property of Siemens Protection Devices
Limited. No part of this document shall be reproduced or modified or stored in another form, in any data
retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article
be reproduced from this document unless Siemens Protection Devices Limited consent.
While the information and guidance given in this document is believed to be correct, no liability shall be
accepted for any loss or damage caused by any error or omission, whether such error or omission is the result
of negligence or any other cause. Any and all such liability is disclaimed.
© 2017 Siemens Protection Devices Limited