Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
388
3.1.3.2 Rack and Cubicle Mounting
For the
1
/
2
housing size (Figure 3-15), there are four covers and four holes. For the
1
/
1
housing size (Figure 3-
16) there are six covers and six holes.
To install the device in a frame or cubicle, two mounting brackets are required. The ordering codes are stated
in Appendix, Section A.1.
• Loosely screw the two mounting brackets in the rack or cubicle with four screws.
• 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. Thus the 4 respectively 6 slots in the mounting flange are revealed
and can be accessed.
• Fasten the device to the mounting brackets with four or six screws.
• Mount the four or six covers.
• Tighten fast the eight screws of the angle brackets in the rack or cubicle.
• 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 use the plug terminals or screw terminals on the rear side of the device in accordance the wiring
diagram. For screw connections with forked lugs or direct connection, before inserting wires the screws must
be tightened 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 /1/ has pertinent information regarding wire size, lugs, bending radii, etc.
Figure 3-15 Rack or cubicle mounting of a device (housing size
1
/
2
)
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