Schweitzer Engineering Laboratories SEL-787 - Table 4.33 General Global Settings

4.82
SEL-787 Relay Instruction Manual Date Code 20081022
Protection and Logic Functions
Global Settings (SET G Command)
If the contact fail-safe is enabled, the relay output is held in its energized
position when relay control power is applied. The output falls to its de-
energized position when control power is removed. Contact positions with de-
energized output relays are indicated on the relay chassis and in Figure 2.12
and Figure 2.13.
When TRIP output fail-safe is enabled and the TRIP contact is appropriately
connected (see Figure 2.15), the breaker is automatically tripped when relay
control power fails.
MIRRORED BITS
Transmit SEL
OGIC
Control Equations
See Appendix I: MIRRORED BITS Communications and SEL-787 Settings
Sheets for details.
Global Settings (SET G Command)
General Settings
The phase rotation setting tells the relay your phase labeling standard. Set
PHROT equal to ABC when B-phase current lags A-phase current by 120
degrees. Set PHROT equal to ACB when B-phase current leads A-phase
current by 120 degrees.
Table 4.33 General Global Settings
Setting Prompt Setting Range Setting Name := Factory Default
PHASE ROTATION ABC, ACB PHROT := ABC
RATED FREQ. 50, 60 Hz FNOM := 60
DATE FORMAT MDY, YMD, DMY DATE_F := MDY
FAULT CONDITION SEL
OGIC FAULT := 51P1P OR 51P2P OR 51G1P OR 51G2P OR
51N1P OR TRIP
EVE MSG PTS ENABL N, 1–32 EMP := N
MESSENGER POINT MP01 TRIGGER Off, 1 Relay Word bit MPTR01 := OFF
MESSENGER POINT MP01 AQ None, 1 analog quantity MPAQ01 := NONE
MESSENGER POINT MP01 TEXT 148 characters MPTX01 := (blank)
•
•
•
•
•
•
•
•
•
MESSENGER POINT MP32 TRIGGER Off, 1 Relay Word bit MPTR32 := OFF
MESSENGER POINT MP32 AQ None, 1 analog quantity MPAQ32 := NONE
MESSENGER POINT MP32 TEXT 148 characters MPTX32 := (blank)