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500-8384.9 • Version 11 • Installation and Operating Instructions • 8DJH
7.20.2 Routing of currents and bars in the metering panel
The direction of the current flow in the metering panel is from the left to the right side of the
switchgear. The voltage transformers can be connected upstream or downstream from the
current transformers.
Top view into the open vessel with the bushings and the busbars:
Type busbar-busbar
Type cable-busbar
Type busbar-cable
L1
L1
L2
L3
L2
L3
L1
L1
L2
L3
L2
L3
L1
L1
L2
L3
L2
L3
7.20.3 Mounting the instrument transformers
CAUTION
Heavy instrument transformer
An instrument transformer falling down can cause injury.
⇨ Lift the instrument transformer together with several persons.
⇨ Secure the instrument transformer against falling down.
NOTICE
Damage to the switchgear due to inadequate instrument transformers!
Mount only instrument transformers which have been released by Siemens and correspond
to the following standards:
⇨ Dimensions according to DIN 42600-8 for current transformers 4MA7
⇨ Dimensions according to DIN 42600-9 for voltage transformers 4MR
1. Remove the cable compartment covers in the metering panel [
mounting the cable compartment cover"]. Observe the instructions specified there.
2. Remove the cross member in the metering panel [
Page 126, "Removing and mounting the
Mounting the C-rail
☒ Bolt 2 Z-angles to the C-rail at the sides. The mounting position of the Z-angles depends on
the switchgear design.
1.
12 kV switchgear design:
Mount Z-angle turned to the front (
1
).
2.
24 kV switchgear design
: Mount Z-angle turned to the rear (
2
).
Fig. 106:
Mounting position of the C-rail
1
Mounting position of the Z-angle
for 12 kV
2
Mounting position of the Z-angle
for 24 kV
3
C-rail
Содержание 8DJH
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