S4 Elements
745
Transformer Management Relay
Se
tpoints
http://www.GEindustrial.com/multilin
5–84
GE Multilin
Transformer Overload
PATH: SETPOINTS
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S4 ELEMENTS
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XFORMER OVERLOAD
•
TRANSFORMER OVERLOAD PICKUP
: This setting identifies the level of
transformer overload, where the pickup delay starts timing. The setting is
expressed as a percentage of the transformer base MVA rating, and is normally
set at or above the maximum rated MVA from the transformer nameplate.
•
XFMR OVERTEMP ALARM SIGNAL
: Select any logic input that, when
asserted, indicates the transformer cooling system has failed and an over-
temperature condition exists. The logic input should be connected to the
transformer winding temperature alarm contacts.
FIGURE 5–44: Transformer Overload Scheme Logic
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XFORMER
[
!
]
OVERLOAD
TRANSFORMER OVERLOAD
FUNCTION: Disabled
Range: Enabled, Disabled
MESSAGE
TRANSFORMER OVERLOAD
TARGET: Self-Reset
Range: Self-Reset, Latched, None
MESSAGE
TRANSFORMER OVERLOAD
PICKUP: 208% rated
Range: 50 to 300% of Rated Load in
steps of 1
MESSAGE
TRANSFORMER OVERLOAD
DELAY:
10 s
Range: 0 to 60000 s in steps of 1
MESSAGE
TRANSFORMER OVERLOAD
BLOCK: Disabled
Range: Logc Inpt 1 to 16, Virt Inpt 1 to
16, Output Rly 2 to 8, SelfTest
Rly, Vir Outpt 1 to 5, Disabled
MESSAGE
XFMR OVERTEMP ALARM
SIGNAL: Disabled
Range: Disabled, Logc Inpt 1 to 16
Summary of Contents for Multilin 745
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