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Section 1: Installation
1.1
P
ACKAGING
Relays are supplied in packaging designed to mechanically protect them while in both transit and
storage.
This packaging should be recycled where systems exist, or 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.
1.2
U
NPACKING
On receipt remove the relay from the container in which it was received and inspect it for obvious
damage. It is recommended that the relay not be removed from its case.
If damage has been sustained a claim should be immediately be made against the carrier, also inform
Siemens Protection Devices Limited, and the nearest Siemens agent.
When not required for immediate use, Relays should be stored in their original packaging. The place of
storage should be dry and free from dust. It should also not exceed the storage temperature and
humidity limits of the Relay; given in the Performance Specification of this manual.
The relay contains static sensitive devices, which are susceptible to damage due to static discharge.
The relay's electronic circuits are protected from damage by static discharge when the relay is housed in
its case.
On initial power up after installation all external circuit trip and close links should be removed, they
should only be replaced after the 'Relay Healthy' LED is lit. The relay element should not be withdrawn
or reinserted into the relay case whilst auxiliary voltage is present.
The relay contains no user serviceable parts, under no circumstances should the relay be dismantled. If
any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection
Devices Limited reserves the right to charge for any subsequent repairs.
1.3
R
ECOMMENDED
The relay uses a liquid crystal display (LCD) for programming and operation. The LCD has a vertical
viewing angle of ± 30 and is back–lit. However, the optimum viewing position is at eye level, and this is
particularly important given its control features.
The relay should be mounted on the circuit breaker (or protection panel) to allow the operator the best
access to the relay functions
1.4
W
IRING
The product should be wired according to the scheme requirements, with reference to the appropriate
wiring diagram.
1.5
E
ARTHING
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.
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.
©2014 Siemens Protection Devices Limited
, S
H
TORAGE AND
ANDLING
M
P
OUNTING
OSITION
Chapter 5) 7SR17 Installation Guide
Page 5 of 18
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