Hardware and Connections
2-14 7SJ62 Manual
C53000-G1140-C121-1
2.2 Version of 7SJ62 for Panel Surface-Mounting
The numerical, multi-functional SIPROTEC
®
4 7SJ62 for panel surface-mounting is a
sealed device in a 7XP20
1
/
3
size case (based on 19 inches) which again is installed
in a housing.
2.2.1 Construction
The case is inserted in a housing and secured with four screws that are located at the
corners of the front panel behind the covers. The front panel is attached to the case.
The terminals for connections to external equipment are grouped into two blocks that
are fastened to the top and the bottom of the housing. Inside the device are two printed
circuit boards that are connected together with a ribbon-cable with plug connectors.
The boards are supported with guide rails inside the case.
The front panel is removable. The screws for removing the component are located be-
hind the four covers at the corners. The front panel has a covered keypad with oper-
ating and display elements necessary for equipment operation. All connections for
these elements are combined into an adapter module on the front panel that is linked
via a ribbon-cable with plug connectors to the internal processor board (CPU).
The nameplate sticker, showing important information such as power supply rating,
nominal current rating, and ordering number, is located on the top of the housing and
the interior of the front panel.
View of Front Panel Referring to the operating and display elements in Diagram 2-14:
1. Display (LCD)
The LCD shows processing and device information as text in various lists. Com-
monly displayed information includes measured values (metering), counter values,
binary information regarding the condition of circuit breakers, status of the device,
protective information, general reports, and alarms.
2. Navigation Keys
These keys serve for navigation through operating menus.
3. MENU Key
This key activates the main menu.
4. ESC and ENTER Keys
These keys serve to escape from specific menues or execute changes (such as
setting changes).
5. Numerical Keys
These buttons serve for the entry of numerical values, such as protective settings.
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