Operation - Siemens SDR 15.5 Instruction Manual

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2
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1. Controller enclosure
2. Control and protection relay
3. Open pushbutton
4. Close pushbutton
Figure 26: Controller with control
and protection relay
22

Operation

Operation
The recloser is just one device in a distribution
system. The user of the recloser must set the
controller protection and control parameters
to suit the user's distribution system needs,
and to provide reliable, safe and trouble-free
operation of the recloser.
Safety instructions for operation
In addition to the local safety rules and work
practices, special precaution must be taken:
The accessories required to operate the
recloser must be stored in a clean location
and must be checked regularly for
completeness and good condition.
All keys must be accessible only to the
authorized operating personnel.
No modifications should be made to the
recloser. This includes, but is not limited, to
removal of parts, opening the operating
mechanism housing and any modification
(including adjustment) of the drive system
of the recloser.
The control cable and the optional voltage
sensor cable must not be removed during
operation. Removing these cables would
mean no further electrical operation could
be performed and no measurement values
or other signals could be sent from the
recloser switch units to the controller.
Switching
Switching comprises electrical switching
(remote and/or local operation) and
mechanical switching (by means of the
lockout handles).
Switching is carried out automatically by the
controller to protect the network by remote
control or manually on site.
Local operation
Local operation describes the manual
electrical switching of the reclosers on site.
Manual switching using the lockout handles
is discussed in the Lockout operation section
of this instruction manual on page 23.
These switching actions can be carried out
from the controller using the Close/Open
pushbuttons or using the function buttons on
the control and protection relay. Refer to page
23 for more information.
Hazardous voltages.
Will cause death, serious injury or property damage.
Always de-energize and ground the equipment and all terminals before
performing any work near high-voltage conductors.
Work on the recloser switch unit or the control cubicle should be
performed only by qualified personnel.
Do not open the inner panel of the control cubicle, as interior parts
energized at voltages higher than 50 V are present.
Do not disconnect control or sensor cables while recloser is energized,
as connectors contain energized parts.