Basler Electric BE1-CDS240 General Information - Manual

SECTION 1 • GENERAL INFORMATION
TABLE OF CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
Introduction ............................................................................................................................................ 1-1
Features ................................................................................................................................................. 1-1
I/O Functions ...................................................................................................................................... 1-2
Protection and Control Functions ....................................................................................................... 1-3
Metering Functions ............................................................................................................................. 1-4
Reporting and Alarm Functions .......................................................................................................... 1-4
BESTlogic Programmable Logic ........................................................................................................ 1-6
Security............................................................................................................................................... 1-6
Human-Machine Interface .................................................................................................................. 1-6
ASCII Command Interface ................................................................................................................. 1-6
Installation .......................................................................................................................................... 1-7
Testing and Maintenance ................................................................................................................... 1-7
BESTCOMS™ Software ..................................................................................................................... 1-7
Primary Applications .............................................................................................................................. 1-7
Differential Protection Application Considerations ................................................................................. 1-8
Problem 1: False Differential Current Due to Poor CT Performance ................................................. 1-8
Problem 2: Measured Current Magnitude Mismatch ......................................................................... 1-9
Problem 3: Mismatch Caused by Load Tap Changers ...................................................................... 1-9
Problem 4: Phase Angle Shift .......................................................................................................... 1-10
Problem 5: Zero-Sequence Current Sources Within the Zone of Protection ................................... 1-13
Problem 6: Transformer Energization Inrush and Overexcitation .................................................... 1-15
Problem 7: Digital Measurement Errors ........................................................................................... 1-15
Model and Style Number Description .................................................................................................. 1-16
Sample Style Number ...................................................................................................................... 1-16
Operational Specifications ................................................................................................................... 1-17
Metered Current Values and Accuracy ............................................................................................ 1-17
Metered Voltage Values and Accuracy ............................................................................................ 1-17
Metered Frequency Values and Accuracy ....................................................................................... 1-17
Calculated Values and Accuracy ..................................................................................................... 1-17
Energy Data Reporting ..................................................................................................................... 1-18
24 Overexcitation Protection ............................................................................................................ 1-18
27P Phase Undervoltage Protection ................................................................................................ 1-18
47 Negative-Sequence Voltage Protection ...................................................................................... 1-18
50T Instantaneous Overcurrent Protection ...................................................................................... 1-19
50BF Breaker Failure Protection ...................................................................................................... 1-19
51 Time Overcurrent Protection ....................................................................................................... 1-20
59P Phase Overvoltage Protection .................................................................................................. 1-20
59X Auxiliary Overvoltage Protection ............................................................................................... 1-20
60FL Fuse Loss ................................................................................................................................ 1-20
62 Logic Timers ................................................................................................................................ 1-20
81 Frequency Protection .................................................................................................................. 1-21
87 Current Differential Protection ..................................................................................................... 1-21
87ND Neutral Differential Protection ................................................................................................ 1-22
Automatic Setting Group Characteristics ......................................................................................... 1-22
BESTlogic ......................................................................................................................................... 1-22
General Specifications ......................................................................................................................... 1-22
AC Current Inputs ............................................................................................................................. 1-22
Analog to Digital Converter .............................................................................................................. 1-23
Power Supply ................................................................................................................................... 1-23
Output Contacts ............................................................................................................................... 1-23
Contact-Sensing Inputs .................................................................................................................... 1-23
IRIG .................................................................................................................................................. 1-24
Real-Time Clock ............................................................................................................................... 1-24
9365200990 Rev M BE1-CDS240 General Information i