Current Circuit
It is not required externally short-circuit of the
current transformers in the test plug. The
circuits include a mechanism for ensuring the
short current transformers before proceeding
to open the corresponding contact test block.
Arteche offers the possibility to select from
various types of shorted, depending on the
application. On the front side of the block, you can see which of those circuits are shorted, also
from identification shown on labels frame. This identification is visible even when the test plug
is inserted.
Lock & Unlock Test Plug
Once the test plug is inserted, it can be locked to
prevent involuntary extractions, turning the black buttons
of the test block.
For test plug removal is necessary to unlock it, turning
the two buttons and unlocking the retention
mechanism.
Signal Injection
Once the Test Plug is fully inserted tests signal
injections can be performed with bananas by the
Test Plug. With Test Plug inserted the field
elements are automatically isolate, shorting
current transformers and opening voltage / trip
circuits.
Closing sequence (Test Plug Extraction)
The retention system force to do the extraction of the test plug, with the following sequence:
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