Restoring the lever link back
into original position
Switching backwards the lever, restores the
entire arrangement into its original status. Replacing the ammeter
After short-circuiting the current transformer
side and simultaneously disconnecting
the circuit through the lever switching, the
ammeter can replaced easily and safely. Switching the lever link
Switching the lever link causes automatic
short circuit (make before break mechanism)
on the secondary wiring the current
transformer.227
CAT1 Version 2025
Application
range
B
9$
Instrument transformer wiring
TTB-Range
.Installation: Wiring transformer and ammeter wiring
Operation: Changing ammeter
Wiring current transformer and
ammeter
The transformer will connected the
clamping units usptream the disconnect
lever and the ammeter will connected
in the clamping units downstream the
disconnect lever. This prevents the voltage the
current transformer from surging and protects
it from damage leading its destruction.
2.
CT
A
v
CT
A
v
CT
v
A
CT
A
v
B.
1.
The transition from the automatic short
circuit back the initial position realised
smoothly and safely.
3
