The IED can get analog values simultaneously from a classical CT or VT and from a
Merging Unit, like in this example:
The merging units (MU) are called so because they can gather analog values from one
or more measuring transformers, sample the data and send the data over process bus
to other clients (or subscribers) in the system. Some merging units are able to get data
from classical measuring transformers, others from non-conventional measuring
transducers and yet others can pick up data from both types. The electronic part of a
non-conventional measuring transducer (like a Rogowski coil or a capacitive divider)
can represent a MU by itself as long as it can send sampled data over process bus.
Section 20 1MRK 502 071-UEN -
Station communication
686 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
To Next Page
Loading...
