Security; Due Application - Siemens 8DA10 Series Installation And Operating Instructions Manual

861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11
Removing the front cover from the operating mechanism compartment
High speed moving parts
Can cause serious injury.
Do not remove the front cover of the operating mechanism until the following actions have
been performed:
➭ To avoid impermissible switching operations, switch off auxiliary voltage, e.g.:
- Switch the auxiliary voltage supply of the motor.
- Trip the MCB.
- Disconnect the control cables from the low-voltage compartment.
➭ To discharge the spring energy store in the operating mechanism, execute the following
instructions:
- Actuate the manual OFF pushbutton.
- Actuate the manual ON pushbutton.
- Actuate the manual OFF pushbutton again.
➭ Check if the "spring charged" indicator shows "spring charged".
Fig. 1: "Spring not charged"
indication
3 IT security
The Siemens software is regularly checked for safety. If weak points are identified in the
process, which may allow third parties to access protection devices, information thereto is
distributed through the SIPROTEC and SICAM Security Update Report Newsletter.
The Newsletter can be subscribed to at the following website:
www.siemens.com/gridsecurity
Before commissioning the switchgear, it must be verified that the current firmware version is
installed on the protection devices. The latest version of firmware can be obtained from the
following website:
http://w3.siemens.com/smartgrid/global/en/products-systems-solutions/downloads/
Pages/Overview.aspx
For information to updates for other makes of protection devices, please contact the
respective manufacturer.
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Due application

The fixed-mounted circuit-breaker switchgear 8DA10 is a factory-assembled, type-tested,
single-pole metal-enclosed switchgear for indoor installation used in transformer and
switching substations.
The switchgear is designed for application under normal ambient conditions according to
IEC 62271-1. The switchgear can also be used under special ambient conditions as defined
individually between the operator and the manufacturer of the switchgear.
Sulfur hexafluoride SF is used as insulating gas.
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8DA10 switchgear is able to switch rated voltages up to 40.5 kV and rated feeder currents
up to 3150 A.
WARNING
Fig. 2: "Spring charged"
indication
Safety instructions
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