GE Multilin C60, Instruction Manual

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GE Multilin C60 Breaker Protection System 2-1
2 PRODUCT DESCRIPTION 2.1 INTRODUCTION
2
2 PRODUCT DESCRIPTION 2.1INTRODUCTION 2.1.1 OVERVIEW
The C60 Breaker Protection System is a microprocessor based relay designed for breaker monitoring, control and protec-
tion.
Voltage, current, and power metering is built into the relay as a standard feature. Current parameters are available as total
waveform RMS magnitude, or as fundamental frequency only RMS magnitude and angle (phasor).
Diagnostic features include an event recorder capable of storing 1024 time-tagged events, oscillography capable of storing
up to 64 records with programmable trigger, content and sampling rate, and data logger acquisition of up to 16 channels,
with programmable content and sampling rate. The internal clock used for time-tagging can be synchronized with an IRIG-
B signal or via the SNTP protocol over the Ethernet port. This precise time stamping allows the sequence of events to be
determined throughout the system. Events can also be programmed (via FlexLogic™ equations) to trigger oscillography
data capture which may be set to record the measured parameters before and after the event for viewing on a personal
computer (PC). These tools significantly reduce troubleshooting time and simplify report generation in the event of a sys-
tem fault.
A faceplate RS232 port may be used to connect to a PC for the programming of settings and the monitoring of actual val-
ues. A variety of communications modules are available. Two rear RS485 ports allow independent access by operating and
engineering staff. All serial ports use the Modbus
®
RTU protocol. The RS485 ports may be connected to system computers
with baud rates up to 115.2 kbps. The RS232 port has a fixed baud rate of 19.2 kbps. Optional communications modules
include a 10Base-F Ethernet interface which can be used to provide fast, reliable communications in noisy environments.
Another option provides two 10Base-F fiber optic ports for redundancy. The Ethernet port supports IEC 61850, Modbus
®
/
TCP, and TFTP protocols, and allows access to the relay via any standard web browser (C60 web pages). The IEC 60870-
5-104 protocol is supported on the Ethernet port. DNP 3.0 and IEC 60870-5-104 cannot be enabled at the same time.
The C60 IEDs use flash memory technology which allows field upgrading as new features are added. The following Single
line diagram illustrates the relay functionality using ANSI (American National Standards Institute) device numbers.
Table 2–1: ANSI DEVICE NUMBERS AND FUNCTIONS
DEVICE
NUMBER FUNCTION DEVICE
NUMBER FUNCTION
25 Synchrocheck 50P BF Phase Instantaneous Overcurrent,
Breaker Failure
27P Phase Undervoltage 51G Ground Time Overcurrent
27X Auxiliary Undervoltage 51N Neutral Time Overcurrent
32 Sensitive Directional Power 51P Phase Time Overcurrent
50DD Disturbance detector 52 AC Circuit Breaker
50G Ground Instantaneous Overcurrent 59N Neutral Overvoltage
50N Neutral Instantaneous Overcurrent 59X Auxiliary Overvoltage
50N BF Neutral Instantaneous Overcurrent,
Breaker Failure 79 Autoreclose
50P Phase Instantaneous Overcurrent