Siemens 8DJH, Инструкция по установке и эксплуатации

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7 | Installation
90/174 8DJH • Installation and Operating Instructions • Version 11 • 500-8384.9
INFORMATION
The prick-punch point at the switchgear rear wall only applies to small instrument
transformer types according to DIN 42600-8 and DIN 42600-9. For other instrument
transformer types, the specified dimensions and mounting positions must be observed.
Dimensions and mounting positions of the instrument transformers [ ▶ Page 88, "Mounting
positions for instrument transformers in the metering panel type M"].
3. Fasten the 4 C-rails to the rear wall of the switchgear at the sides using Z-angles. The
position of the C-rail is marked at the side of the switchgear rear wall by means of a prick-
punch point
2
.
Fig. 107: Mounting the C-rails
1
Cup head square neck bolt M8
2
Prick-punch point for the C-rail
position
3 Nut-and-washer assembly M8
4
C-rail with Z-angle
Mounting the instrument transformers on the C-rails
Installation order: First, fasten the current transformer and voltage transformer for phase L2 in
the center of the C-rails. Then, fasten the instrument transformers for phases L1 and L3 on the
left and right at a distance of 250
±2
mm.
Fasten each instrument transformer at 4 points; 2 times at the upper C-rail and 2 times at the
lower C-rail.
1. For each instrument transformer, insert 2 sliding nuts with setscrew into the C-rail. Insert the
sliding nuts in upright position.
2. Fasten each instrument transformer to the C-rails using 4 hexagon nuts M10, conical spring
washers and washers (3D washers) each.
L1 L2 L3
L1 L2 L3
Fig. 108: Mounting the instrument transformers
1 Sliding nut
2 Setscrew M10x60
3 Plain washer (3D washer)
4
Conical spring washer
5
Hexagon nut M10