Schweitzer Engineering SEL-351P - Section 8: Breaker;Recloser Monitor, Battery;System Monitor, Metering, and Load Profile

Date Code 990430 Breaker/Recloser Monitor, Battery System Monitor, i
Metering, and Load Profile Functions
SEL-351P Manual Técnico
TABLE OF CONTENTS
SECTION 8: BREAKER/RECLOSER MONITOR, BATTERY
SYSTEM MONITOR, METERING, AND LOAD PROFILE
FUNCTIONS............................................................................................
8-1
Introduction...................................................................................................................................8-1
Breaker/Recloser Contact Wear Monitor .....................................................................................
8-1
Breaker Monitor Setting Example ........................................................................................
8-4
Breaker Maintenance Curve Details .............................................................................
8-6
Operation of SEL
OGIC
®
Control Equation Breaker Monitor Initiation Setting
BKMON................................................................................................................
8-8
Breaker Monitor Operation Example....................................................................................
8-9
0% to 10% Breaker Wear..............................................................................................
8-9
10% to 25% Breaker Wear............................................................................................
8-9
25% to 50% Breaker Wear............................................................................................
8-9
50% to 100% Breaker Wear........................................................................................
8-11
Breaker Monitor Output......................................................................................................
8-11
Example Applications.................................................................................................
8-11
View or Reset Breaker Monitor Information – Including Trip Operation Counters ..........
8-11
Via Serial Port.............................................................................................................
8-11
Via Front Panel ...........................................................................................................
8-12
Determination of Control Initiated Trips and Externally Initiated Trips............................
8-12
Factory Default Setting Example................................................................................
8-13
Additional Example ....................................................................................................
8-13
Battery System Monitor..............................................................................................................
8-14
Battery System Operation...................................................................................................
8-15
SEL-351P Puts Itself “To Sleep” ................................................................................
8-15
Keep 12 Vdc on While SEL-351P is “Asleep”...........................................................
8-16
“Wake Up” the SEL-351P...........................................................................................
8-16
Battery System Diagnostics ................................................................................................
8-16
Automatic Battery Load Test......................................................................................
8-17
Battery Load Test via Front Panel ..............................................................................
8-17
Battery Load Test via Serial Port................................................................................
8-18
Battery Status......................................................................................................................
8-19
Additional Application .......................................................................................................
8-19
Metering......................................................................................................................................
8-20
Demand Metering ...............................................................................................................
8-21
Comparison of Thermal and Rolling Demand Meters................................................
8-21
Thermal Demand Meter Response (EDEM = THM)..................................................
8-22
Rolling Demand Meter Response (EDEM = ROL) ....................................................
8-23
Time = 0 Minutes................................................................................................
8-24
Time = 5 Minutes................................................................................................
8-24
Time = 10 Minutes..............................................................................................
8-25
Time = 15 Minutes..............................................................................................
8-25
Demand Meter Settings...............................................................................................
8-25
Demand Current Logic Output Application – Raise Pickup for Unbalance
Current.................................................................................................................
8-27