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Xiria
18
994.570 G01 06
Assembly steps if current transformers are installed
around the primary cable
The same steps should be followed as described at the
standard assembly. For easy connection of the primary
cables the current transformers in the cable compartment
can be removed and remounted. For this the following
steps should be taken:
1.
Open the cable compartment according to the
standard instructions.
2.
Remove the current transformers for protection (A) by
removing the two bolts on the front (B). The
secondary wiring does not need to be disconnected.
3.
Behind these current transformers a mounting plate
fixed with bolts ( C) becomes visible.
Remove these bolts and remove the mounting plate.
4.
The current transformers for metering (D) can now be
lifted and removed, also remove the tywrap from the
secondary wiring. The secondary wiring does not
need to be disconnected.
5.
Lead the primary cables through the current
transformers and remount the current transformers as
described above.
R
EMARK
After remounting the current transformers the
earth screen connections of the primary cables
must be connected to earth via the premounted
earth wires (F). In this case any earth current
through these connections will not influence the
metering results.
Figure 3-8
1. Current transformers for protection
2. Current transformers for metering
3. Cable clamps
4. Cable side voltage transformers
Figure 3-9
Connection of the primary cables when cable side
voltage transformers are installed
Due to the limited mounting space inside the cable
compartment the primary cables and the voltage
transformers are connected with connectors make Tyco
type RSTI 58. The connectors and cables for the voltage
transformers are pretested and preassembled on the cable
cones of the circuit-breaker. Parallel on these
preassembled connectors the connectors (type RSTI
CC58) for the primary main cables can be mounted at site.
Figure 3-10: Cable connector
1
2
3
4
Содержание Xiria
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