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D-87
Additional information
Practical information
PD391279.eps
Choice of a CT model depends on the type of installation:
b
insulated cables
b
Prisma P vertical busbars
b
insulated flexible busbars
b
Linergy LGY vertical busbars
b
rigid busbars.
When installing a CT, we recommend that you comply with the following mounting
rules:
b
install current transformers:
v
on an easily dismountable busbars or copper connections
v
between 2 connection points, by joints or bolted connection
b
place the current transformer so that the identification markings remain readable.
For large current transformers, a staggered installation is recommended to prevent
arcing on fixing screws or excessive spacing between phase conductors.
If they are installed on vertical busbars, secure the current transformers in place to
prevent them from slipping downwards (for example using a bolt or a pin)
b
when there are several busbars per phase, fit spacers between the busbars in
order to:
v
resist the tightening forces when installing the current transformer
v
avoid vibrations that lead to current transformer breakdowns.
Dismountable vertical busbars.
PD391280.eps
PD391281.eps
CT on vertical busbars.
Spacers between the bars.
Installation of the current
transformer