Hitachi Relion 650 Series Technical Manual page 5

Disclaimer
The data, examples and diagrams in this manual are included solely for the concept or product
description and are not to be deemed as a statement of guaranteed properties. All persons
responsible for applying the equipment addressed in this manual must satisfy themselves that each
intended application is suitable and acceptable, including that any applicable safety or other
operational requirements are complied with. In particular, any risks in applications where a system
failure and/or product failure would create a risk for harm to property or persons (including but not
limited to personal injuries or death) shall be the sole responsibility of the person or entity applying
the equipment, and those so responsible are hereby requested to ensure that all measures are taken
to exclude or mitigate such risks.
This document has been carefully checked by Hitachi Energy but deviations cannot be completely
ruled out. In case any errors are detected, the reader is kindly requested to notify the manufacturer.
Other than under explicit contractual commitments, in no event shall Hitachi Energy be responsible
or liable for any loss or damage resulting from the use of this manual or the application of the
equipment.
Important
Commissioning a point-on-wave controller such as Switchsync PWC600 requires comprehensive
knowledge on controlled switching in power systems, to assess and fully validate the performance of
the controlled switching system.
Aside from well-known occupational hazards inherent to working in an energized substation,
improper commissioning may introduce additional risks such as damage to neighboring primary
equipment, accelerated equipment wear, or even severe physical harm to substation personnel.
Commissioning of PWC600 shall include live switching operations and shall be performed only by
qualified personnel that is knowledgeable about this type of controller, technology, and field of
implementation.