The
connection made inserting parralel the
calibrated instrument the terminal block,
where the disconnection will take place.Operation: Performing comparative measurement
1. Lifting the TTB lever link
Lifting the lever link TTB causes a
mechanical decoupling the two disconnect
levers.
3.230 CAT1 Version 2025
Application
range
B
9$
.0 plugs
to the test sockets terminal block. The
installation correctly prepared perform
the required operations. Now the two disconnect levers can
be operated independently from each other
within this application. Connection reference measuring
(calibrated) instrument
The reference measuring (calibrated)
instrument connected via standard 4.
CT
A
v
CT
A
v
v
CT
A
A
v
CT
A
A
v
CT
A
A
v
Instrument transformer wiring
TTB-Range
Application examples
Performing comparative measurement
B. Configuration correctly equipped
The installation the required accessories
to equip the terminal arrangement for
comparative measurement and also the wiring
of the primary side well the secondary
side, has already been carried out. Switching the TTB lever link
By switching the previously decoupled lever
link, the current flow diverted from the
terminal block through the now parallel-
connected reference measuring instrument.
4.
2
