Eaton SVS/12, User Manual

Page: 96 / 138

SVS/12
96 994.530 G01 02
4.2.9 Cable side voltage transformers
F
OR
630 A
PANELS
General
As an option, 3 cable side voltage transformers can be
fitted in a load-break switch, circuit-breaker or bus-section
panel.
The 3 cable side voltage transformers (see figure 1) are
mounted under the cable connection in the cable panel.
The primary side of the voltage transformers is connected
to the cable connection by means of a detachable epoxy
resin insulated connector. Connection data of the
secondary side are noted in the diagram pack for the
supplied installation.
D
ANGER WARNING
The cable side of the panel on which work is
being carried out must be earthed; for
instructions, see chapter 4.3.
The cable must not be live; check this by means
of the voltage indicator (see chapter 4.2.6).
On the secondary side of the transformer, the
fuses must be removed or the automatic cut-
outs turned off, so that feedback is impossible
Disconnection
1. Make sure the cables are earthed and the transformers
isolated on the secondary side (see General).
2. Remove the protection cover.
3. Remove the 3 end caps and the 3 sleeves from the
epoxy resin insulated connection. An extraction tool is
available for removing the end caps (see chapter 7).
4. Loosen the 3 contact pins with a socket wrench
(size 13) and remove them.
The cable can now be tested or metered, for example (see
chapter 4.4).
Connection
1. Make sure the primary cables are earthed and the
transformers isolated on the secondary side (see
General).
2. Fit the 3 contact pins and tighten them with a socket
wrench (size 13); the tightening torque is 9 Nm.
1.
Terminal block
Cont act pin
Sleeve
End cap
Volt age
t ransf ormers
SVS-cable panel
2.
3.

Clean the holes in which the sleeves
are mounted (figure 2).

Fit new sleeves greased with silicone grease and
then the end caps.
Use a polyamide thread for venting.
The sleeves, end caps and polyamide thread are
obtainable from Eaton.

Remove the polyamide thread.
4. Fit the protection cover.
5. Fit the fuses or switch the automatic fuses on the
secondary side back on.
Now the panel can be put into operation again (see
chapter 4.2.2).