Schweitzer Engineering Laboratories SEL-300G - Section 3: Auxiliary Function Settings

SEL-300G Instruction Manual Date Code 20020206
TABLE OF CONTENTS
SECTION 3:
AUXILIARY FUNCTION SETTINGS ..................................3-1
Introduction...................................................................................................................................3-1
Demand Meter...............................................................................................................................3-1
Functional Description ..........................................................................................................3-1
Comparison of Thermal and Rolling Demand Meters ..................................................3-1
Demand Ammeter Thresholds...............................................................................................3-5
Setting Descriptions ..............................................................................................................3-5
Relay Word Bits....................................................................................................................3-6
Station DC Monitor.......................................................................................................................3-8
Element Description..............................................................................................................3-8
Functional Description ..................................................................................................3-8
Setting Descriptions ......................................................................................................3-8
Relay Word Bits ............................................................................................................3-9
Create Desired Logic for DC Under- and Overvoltage Alarming ........................................3-9
DCLO < DCHI (Top of Figure 3.5) ............................................................................3-10
DCLO > DCHI (Bottom of Figure 3.5).......................................................................3-11
Output Contact Type Considerations (“a” or “b”) ......................................................3-11
Setting Group Selection Function...............................................................................................3-12
Active Setting Group Indication .........................................................................................3-12
Selecting the Active Setting Group.....................................................................................3-12
Operation of SELOGIC
®
Control Equation Settings SS1 and SS2 ......................................3-12
Operation of Serial Port GROUP Command and Front-Panel GROUP Pushbutton ..........3-13
Relay Disabled Momentarily During Active Setting Group Change..................................3-13
Active Setting Group Switching Example ..........................................................................3-13
Feedback Control.........................................................................................................3-15
Rising Edge Operators.................................................................................................3-15
Active Setting Group Retained ...........................................................................................3-18
Power Loss ..................................................................................................................3-18
Settings Change ...........................................................................................................3-18
Breaker Monitor Function...........................................................................................................3-19
Breaker Monitor Setting Example.......................................................................................3-21
Breaker Maintenance Curve Details............................................................................3-21
Operation of SELOGIC Control Equation Breaker Monitor Initiation Setting
BKMON ..............................................................................................................3-23
Optoisolated Input Debounce Timers .........................................................................................3-24
Input Debounce Timers.......................................................................................................3-25
Input Functions....................................................................................................................3-26
Factory Settings Example....................................................................................................3-26
Input IN101..................................................................................................................3-26
SER Trigger Settings and Alias Settings ....................................................................................3-27
SER Triggering....................................................................................................................3-27
Making SER Trigger Settings .............................................................................................3-27
Alias Settings.......................................................................................................................3-28