EasyManuals Logo

GE Feeder Management Relay 750 User Manual

GE Feeder Management Relay 750
346 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #26 background imageLoading...
Page #26 background image
2-10 750/760 Feeder Management Relay GE Multilin
2.2 SPECIFICATIONS 2 INTRODUCTION
2
WAVEFORM CAPTURE
Data channels: 4 currents, 3 voltages, 14 logic input
states and 8 output relays
Sample rate: 16 per cycle
Trigger source: Element pickup/trip/dropout, control/
alarm event, logic input or manual com-
mand
Trigger position: 0 to 100%
Storage capacity: 2 to 16 events with 2048 to 256 samples
of data respectively
EVENT RECORDER
Number of events: 128
Content: event cause, 3 phase current phasors, 1
ground current phasor, sensitive ground
current phasors, 3 voltage phasors, sys-
tem frequency, synchronizing voltage,
synchronizing frequency, and analog
input level with a 1 ms time stamp.
LAST TRIP DATA
Records cause of most recent trip, 4 RMS currents, and 3 RMS
voltages with a 1 ms time stamp.
2.2.6 CONTROL ELEMENTS
SYNCHROCHECK
Voltage difference: 0.01 to 100.00 kV in steps of 0.01
Phase difference: 0 to 100° in steps of 2
Frequency difference: 0.00 to 5.00 Hz in steps of 0.02
Bypass permissives: DB & DL (dead bus and dead line)
LL & DB (live line and dead bus)
DL & LB (dead line and live bus)
DL | DB (dead line or dead bus)
DL
X DB (either dead line or dead bus)
SETPOINT GROUPS
Number of groups: 4
Accessibility: Can be changed from logic input or
through communications
Included features: TOC Curves, Phase TOC and IOC, Neu-
tral TOC and IOC, Ground TOC and
IOC, Negative Sequence OC and Volt-
age, Phase Directional, Ground Direc-
tional, Overvoltage, Undervoltage,
Underfrequency, Breaker Failure
UNDERVOLTAGE RESTORATION
Initiated by: Trip from Undervoltage 1, 2, 3 or 4
Minimum voltage level: 0.00 to 1.25
× VT in steps of 0.01
Time delay: 0.1 to 100.0 s in steps of 0.1
Incomplete seq. time: 1 to 10000 min. in steps of 1
Phases: Any one, any two, or all three (program-
mable) phases must operate for output
Level accuracy: per voltage input
Timing accuracy: ±100 ms
UNDERFREQUENCY RESTORATION
Initiated by: Trip from Underfrequency 1 or 2
Minimum voltage level: 0.00 to 1.25
× VT in steps of 0.01
Minimum freq. level: 20.00 to 60.00 Hz in steps of 0.01
Time delay: 0.1 to 100.0 s in steps of 0.1
Incomplete seq. time: 1 to 10000 min in steps of 1
Level accuracy: Per voltage and frequency input
Timing accuracy: ±100 ms
MANUAL CLOSE FEATURE BLOCKING
Operated by: manual close command.
Programmability: Block IOC for a selected period.
Raise TOC pickup for a selected period.
COLD LOAD PICKUP FEATURE BLOCKING
Operated by: logic input command or automatically
Programmability: Block IOC for a selected period.
Raise TOC pickup for a selected period.
TRANSFER SCHEME
Applicability: Used for double-bus system with two
normally-closed incoming and one nor-
mally-open bus tie circuit breaker.
Closing: Automatic closing of the bus tie breaker
after a loss of one source, with bus
decayed voltage permissive.
Trip: Trips a pre-selected breaker after the
third breaker is manually closed (pre-
vent-parallel operation).
AUTORECLOSE (760 ONLY)
Reclose attempts: Up to four (4) before lockout.
Blocking: Each reclose shot can block IOC and
raise TOC Pickup.
Adjustability: Current supervision can adjust the maxi-
mum number of shots to be attempted.
Courtesy of NationalSwitchgear.com

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the GE Feeder Management Relay 750 and is the answer not in the manual?

GE Feeder Management Relay 750 Specifications

General IconGeneral
BrandGE
ModelFeeder Management Relay 750
CategoryProtection Device
LanguageEnglish

Related product manuals