7SR11 & 7SR12 Installation Guide
Chapter 5 Page 6 of 32 ©2017 Siemens Protection Devices Limited
1.5 Earthing
Terminal 28 of the PSU (Power Supply Unit) should be solidly earthed by a direct connection to the panel earth.
The Relay case earth stud connection should be connected to terminal 28 of the PSU. A minimum wire size of
2.5mm sq. is recommended. Before any subsequent maintenance or other interaction with the device, the integrity
of this protective conductor connection shall be checked before carrying out any other actions
It is normal practice to additionally 'daisy chain' together the case (safety) earths of all the Relays installed in a
panel to prevent earth current loops posing a risk to personnel.
1.6 Ancillary Equipment
The relay can be interrogated locally or remotely. For local interrogation a portable PC with suitable version of MS
Windows (2000 SP4, XP SP2, W7)and Reydisp Evolution™ (Latest Version available 32 bit) or Reydisp
Manager™ s/w using USB port situated on front of the relay.
1.7 Disposal
The Relay should be disposed of in a manner which does not provide a threat to health or the environment. All
laws and regulations specific to the country of disposal should be adhered to.
The relays and protection systems manufactured under the Reyrolle brand currently do not come within the scope
of either the European WEEE or RoHS directives as they are equipment making up a fixed installation.
To Next Page
Loading...
Need help?
General
