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Installation and Commissioning
Mounting the
Device with a
Detached Operator
Panel
8.1.2
Connections
Currents/Voltages
8-6
To mount the Main Housing:
q
Securely fasten the housing to the panel using 6 screws for 1/2 size housing and
10 screws for full size housing. Refer to Figures 10-11 and 10-12 in Sub-section
10.19 for dimensions.
q
Connect the ground of the housing to the protective ground of the panel. Use at
least one M4 screw for the device ground. The cross-sectional area of the ground
wire must be greater than or equal to the cross-sectional area of any other control
conductor connected to the housing. Furthermore, the cross-sectional area of the
ground wire must be at least AWG 13. A solid, low impedance connection for the
device ground is important.
q
Connect the threaded terminals or plug-in terminal according to the elementary di-
agram for the panel.
When using spade lugs or directly connecting wires to threaded terminals, the
screws must be tightened so that the heads are even with the terminal block before
the lugs or wires are inserted.
A ring lug must be centered in the connection chamber so that the screw thread fits
in the hole of the lug.
Sub-section 2.3 has pertinent information regarding wire size, lugs, bending radii
(optical cables), etc.
To mount the Operator Panel:
q
Remove the four covers at the corners of the front cover of the unit. Four elongated
holes in the mounting angle strips become accessible.
q
Insert the operator unit in the panel cutout, and fasten the unit with four screws. Re-
fer to Figure 10-13 in Sub-section 10.19 for dimensions.
q
Replace the four corner covers.
q
Connect the ground of the operator unit to the protective ground of the panel. Use
at least one M4 screw for the unit ground. The cross-sectional area of the ground
wire must be at least AWG 13. A solid, low impedance connection for the operator
unit ground is important
q
Establish the connection between the operator panel and the main housing by plug-
ging-in the 68-pin connector of the cable to the rear port of the main housing. Refer
to Sub-section 2.3, Figure 2-21.
CT and VT connections for a 7SJ63 are shown in the Appendix, Section A.4. Figures
A-35 to A-38 show examples of current transformer circuit connections for grounded,
ungrounded, and compensated (European practice with arc suppression/Petersen-
coils) power systems using two or three CTs. Figures A-39 to A-42 show examples of
VT connections. The device can either be connected with three phase-ground voltag-
es as shown in Figure A-39, or with two phase-phase voltages and 3V
the displacement voltage) from open delta VTs as shown in Figure A-40. For the latter,
only the phase-phase voltages can be connected as shown in Figure A-41 (open delta
VTs), or only 3V
can be connected as illustrated in Figure A-42. In the device settings
0
the appropriate voltage connection must be entered under Address , VT Con-
nection, in 36\VWHP 'DWD.
(also called
0
7SJ63 Manual
C53000-G1140-C120-1
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