GE UR Series C70 Instruction Manual page 7

9. THEORY OF OPERATION
10. APPLICATION OF
SETTINGS
A. FLEXANALOG AND
FLEXINTEGER
PARAMETERS
B. MODBUS
COMMUNICATIONS
GE Multilin
TABLE OF CONTENTS
8.3 ENERVISTA SECURITY MANAGEMENT SYSTEM
8.3.1 OVERVIEW...................................................................................................... 8-15
8.3.2 ENABLING THE SECURITY MANAGEMENT SYSTEM ................................. 8-15
8.3.3 ADDING A NEW USER ................................................................................... 8-15
8.3.4 MODIFYING USER PRIVILEGES ................................................................... 8-16
9.1 OVERVIEW
9.1.1 GENERAL OPERATION.................................................................................... 9-1
9.1.2 BANK PHASE OVERVOLTAGE (ANSI 59B)..................................................... 9-1
9.1.3 VOLTAGE DIFFERENTIAL (ANSI 87V) ............................................................ 9-3
9.1.4 COMPENSATED BANK NEUTRAL VOLTAGE UNBALANCE (ANSI 59NU) .... 9-6
9.1.5 PHASE CURRENT UNBALANCE (ANSI 60P) ................................................ 9-10
9.1.6 NEUTRAL CURRENT UNBALANCE (ANSI 60N) ........................................... 9-12
10.1 ARRANGEMENT OF SHUNT CAPACITOR BANKS
10.1.1 OVERVIEW...................................................................................................... 10-1
10.1.2 EXTERNALLY FUSED CAPACITORS ............................................................ 10-1
10.1.3 INTERNALLY FUSED CAPACITORS ............................................................. 10-1
10.1.4 FUSELESS CAPACITORS .............................................................................. 10-2
10.1.5 UNFUSED CAPACITORS ............................................................................... 10-2
10.2 CONNECTIONS OF SHUNT CAPACITOR BANKS
10.2.1 GROUNDED WYE-CONNECTED BANKS ...................................................... 10-3
10.2.2 UNGROUNDED WYE-CONNECTED BANKS................................................. 10-3
10.2.3 DELTA-CONNECTED BANKS ........................................................................ 10-3
10.2.4 H-CONFIGURATION ....................................................................................... 10-3
10.2.5 TAPPED CONFIGURATION............................................................................ 10-3
10.2.6 SUMMARY....................................................................................................... 10-4
10.3 PROTECTION METHODS FOR CAPACITOR BANKS
10.3.1 DESCRIPTION................................................................................................. 10-5
10.3.2 CAPACITOR UNBALANCE PROTECTION..................................................... 10-5
10.3.3 PROTECTION FOR RACK FAULTS (ARC-OVER WITHIN CAPACITOR BANK) .
10-10
10.3.4 OVERVOLTAGE ............................................................................................ 10-10
10.3.5 OVERCURRENT ........................................................................................... 10-11
10.3.6 LOSS OF BUS VOLTAGE ............................................................................. 10-11
10.4 SETTING EXAMPLE
10.4.1 DESCRIPTION............................................................................................... 10-12
10.4.2 VT AND CT SETUP ....................................................................................... 10-12
10.4.3 SOURCE ASSIGNMENT ............................................................................... 10-13
10.4.4 BANK UNBALANCE CALCULATIONS .......................................................... 10-14
10.4.5 BANK VOLTAGE DIFFERENTIAL SETTINGS .............................................. 10-16
10.4.6 BANK PHASE CURRENT UNBALANCE SETTINGS.................................... 10-18
10.4.7 BANK PHASE OVERVOLTAGE SETTINGS ................................................. 10-19
10.4.8 BANK PHASE UNDERVOLTAGE SETTINGS .............................................. 10-20
10.4.9 BANK OVERCURRENT PROTECTION ........................................................ 10-21
A.1 PARAMETER LISTS
A.1.1 FLEXANALOG ITEMS .......................................................................................A-1
A.1.2 FLEXINTEGER ITEMS ....................................................................................A-32
B.1 MODBUS RTU PROTOCOL
B.1.1 INTRODUCTION................................................................................................B-1
B.1.2 PHYSICAL LAYER.............................................................................................B-1
B.1.3 DATA LINK LAYER............................................................................................B-1
C70 Capacitor Bank Protection and Control System vii