Siemens SIPROTEC 7SS522 V4.6, Руководство пользователя

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Installation and Commissioning
256
7SS52 V4 Manual
C53000-G1176-C182-3
7.1 Installation and Commissioning
Pay attention to the operating conditions according to VDE 0100/ 5.73 and VDE 0105
part 1/7.83.
7.1.1 Central Unit
Panel flush
mounting ‰ Mount the subrack ES902c with at least 4 screws on the panel. The fixing flanges
at both sides must be in full contact with the surface (Figure 9-2, page 329).
‰ Mount a solid low-ohmic and low-inductive operational earthing on the lateral earth-
ing surface. For this earthing strips DIN 72333 Form A are suitable. Connect the
strip to the protective earth of the panel.
‰ Connect the electric lines via the double-leaf-spring crimp contacts or the screw ter-
minals of the modular terminal blocks on the back of the central unit. Pay attention
to the identification of the modular terminal blocks.
(Figure 2-6, page 22).
‰ Connect the central unit to the bay units by fiber-optic cables For this, use fiber-optic
cables with prefabricated ST plugs. Provide a suitable strain relief. When the fibre-
optic cables are connected, the configured order of the bay units must be followed.
The connections on the back of the central unit are marked.
(Figure 2-6, page 22).
Removal of
Modules In general, it is not necessary to remove the ZPS modules.
To adjust the pickup voltage of the binary inputs of the EAZ and CPU modules proceed
once as follows:
‰ Loosen the five screws of the front panel and swing the panel down.
‰ Depending on the module, it will be necessary to loosen either the threaded rail
(one screw per module) or the plug connectors of the ribbon cable.
‰ Remove the plastic strip that serves as shipping brace from underneath the module
latches.
Caution!
The modules of digital protection equipment contain electrostatically endangered
components. These must not be withdrawn or inserted under live conditions! The
modules must be handled with care so that any possibility of damage due to static dis-
charges is prevented. Pay attention to the EED regulations (handling of
e lectrostati-
cally endangered devices ) when you handle single modules. The modules are not
endangered when plugged in.
Warning!
Switch off all poles of the auxiliary voltage of the device at the circuit breaker.
Even after the supply voltage has been disconnected or the module has been remo-
ved, hazardous voltages may still be present in the device (stored energy in the capa-
citor)!
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