5-86
745 Transformer Management Relay
GE Multilin
5.6 S4 ELEMENTS
5 SETPOINTS
5
5.6.16 TRANSFORMER OVERLOAD
PATH: SETPOINTS
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S4 ELEMENTS
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XFORMER OVERLOAD
•
XFMR 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 5–41: TRANSFORMER OVERLOAD SCHEME LOGIC
XFORMER OVERLOAD
[ENTER] for more
TRANSFORMER OVERLOAD
FUNCTION: Disabled
Range: Enabled, Disabled
TRANSFORMER OVERLOAD
TARGET: Self-Reset
Range: Self-Reset, Latched, None
TRANSFORMER OVERLOAD
PICKUP: 208% rated
Range: 50 to 300% of Rated Load in steps of 1
TRANSFORMER OVERLOAD
DELAY: 10 s
Range: 0 to 60000 s in steps of 1
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
XFMR OVERTEMP ALARM
SIGNAL: Disabled
Range: Disabled, Logc Inpt 1 to 16
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