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SEL-311C Relay Instruction Manual Date Code 20060320
Preface
➤ Best Choice Ground Directional™ logic and automatic settings
➤ Torque control settings in providing overcurrent directional
control
Section 5: Trip and Target Logic. Describes the operation of the following:
➤ General trip logic
➤ Switch-Onto-Fault trip logic
➤ Communications-assisted trip logic
➤ Front-panel target LEDs
Most tripping applications (not requiring switch-onto-fault or
communications-assisted tripping) require only SEL
OGIC
®
control equation trip setting TR and unlatch trip setting ULTR
in the general trip logic (see Figure 5.1).
Section 6: Close and Reclose Logic. Describes the close logic operation
for the following:
➤ Automatic reclosing
➤ Other close conditions (e.g., manual close initiation via serial
port or optoisolated inputs)
Section 7: Inputs, Outputs, Timers, and Other Control Logic. Describes the
operation of the following:
➤ Optoisolated inputs IN101–IN106 (models 0311C00x and
0311C01x) and IN201–IN208 (model 0311C01x)
➤ Local control switches (local bit outputs LB1–LB16)
➤ Remote control switches (remote bit outputs RB1–RB16)
➤ Latch control switches (latch bit outputs LT1–LT16)
➤ Multiple setting groups (six available)
➤ Programmable timers (timer outputs SV1T–SV16T)
➤ Output contacts OUT101–OUT107 and ALARM (models 0311C00x
and 0311C01x) and OUT201–OUT212 (model 0311C01x)
➤ Rotating default displays and display points
Section 8: Breaker Monitor and Metering Functions. Describes the
operation of the following:
➤ Breaker monitor
➤ Station dc monitor
➤ Demand and maximum/minimum metering
Section 9: Setting the Relay. Explains how to enter settings and also
contains the following setting reference information:
➤ Time-overcurrent curves (5 U.S. and 5 I.E.C. curves)
➤ Relay Word bit table and definitions (Relay Word bits are used
in SEL
OGIC control equation settings)
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