Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
386
3.1.2.5 Reassembly
The device is assembled in the following steps:
• Insert the boards carefully in the housing. The mounting locations are shown in Figures 3-1 to 3-2. For the
model of the device designed for surface mounting, use the metal lever to insert the C-CPU-2 board. The
installation is easier with the lever.
• Plug in the plug connectors of the ribbon cable onto the input/output modules I/O and then onto the proces-
sor board C-CPU-2. Be careful not to bend any connector pins! Do not apply force!
• Connect the plug connectors of the ribbon cable between the C-CPU-2 board and the front panel to the front
panel plug connector.
• Press the plug connector interlocks back together.
• Replace the front panel and screw it tightly to the housing.
• Put the covers back on.
• Screw the interfaces on the rear panel of the device tight again.
This activity does not apply if the device is for surface mounting.
3.1.3 Mounting
3.1.3.1 Panel Flush Mounting
Depending on the version, the device housing can be
1
/
2
or
1
/
1
. For the
1
/
3
housing size (Figure 3-13), there are
four covers and four holes. For the
1
/
1
housing size (Figure 3-14) there are six covers and six holes.
• Remove the 4 covers at the corners of the front cover, for size
1
/
1
the two covers located centrally at the top
and bottom also have to be removed. The 4 or 6 elongated holes in the mounting bracket are revealed and
can be accessed.
• Insert the device into the panel cut-out and fasten it with four or six screws. For dimensions refer to Section
4.39.
• Mount the four or six covers.
• Connect the ground on the rear plate of the device to the protective ground of the panel. Using at least one
M4 screw. The cross-sectional area of the ground wire must be equal to the cross-sectional area of any other
control conductor connected to the device. The cross-section of the ground wire must be at least 2.5 mm
2
.
• Connections are realised via the plug terminals or screw terminals on the rear side of the device in accor-
dance with the circuit diagram. For screw connections with forked lugs or direct connection the screws must
be tightened before inserting wires so that the screw heads are flush with the outer edge of the connection
block. A ring lug must be centred in the connection chamber in such a way that the screw thread fits in the
hole of the lug. The SIPROTEC 4 System Description has pertinent information regarding wire size, tighten-
ing torques, bending radii and strain relief.
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