GE Multilin 745

Typical Wiring
745
Transformer Management Relay
Installation
http://www.GEindustrial.com/multilin
3–7
GE Multilin
Wiring Diagrams
FIGURE 3–10: Typical Wiring for Two Winding Transformer
MULTILIN
Since the relay takes one voltage input, power and VAR metering is not accurate for unbalanced
conditions. In addition, depending on which winding the VT is on, the power flows and vars displayed
may be opposite in direction to the actual system flow; e.g. in the case of a generator step-up
transformer, depending on the relay winding assignments and which side of the transformer the VT
is connected to, the power may be negative when the generator is producing positive MW. This can
be corrected by reversing the voltage input into C11 and C12.
NOTE