GE Industrial Solutions POWER LEADER PMCS Network Architecture Guide - Manual (Page 60)

Power Management Control System
Appendix A — IED Descriptions
50
• Running MWHr*
• Frequency
Protection
• Overload
• Short Circuit
• Rapid Trip
• Immediate Overload
• Current Unbalance
• Ground Fault
• Overtemperature
• Overvoltage
• Undervoltage
• Power Factor
• Undercurrent
• Thermal Capacity
565 Feeder Management Relay
The 565 feeder management relay is designed to
provide complete and accurate feeder protection,
providing the following functions (functions with an
asterisk require the optional Meter Transducer
Module):
Metering
• RMS phase and ground current
• Phase volts
• Peak amps demand
• Frequency
• Power factor*
• kW*, kVAR*, kWHr*
• Peak kW*, kVAR demand*
Protection and alarm
• Phase and ground-overcurrent
• Current unbalance
• Overvoltage
• Undervoltage
• Power factor*
• Under/Over frequency*
• Peak Amps, kW*, kVAR* demand
• Undercurrent
• Thermal capacity
735 Feeder Relay
The 735 is a microprocessor-based relay for primary
circuit protection on distribution networks at any
voltage level. Protection features include three-phase
timed overcurrent, phase instantaneous overcurrent,
ground timed overcurrent, and ground instantaneous
overcurrent. Each protection element can be selectively
enabled with the front-panel dial settings. Flexible
settings and selectable curve shapes enable accurate
coordination with other IEDs. Installation and
maintenance costs are lower when the SR735 is used
instead of the eight separate over-current protection
IEDs it can replace.
The SR735 has three output contacts: trip, auxiliary
trip, and service required. The auxiliary trip may be set
to follow the main trip relay, act as an 86 Lockout relay,
or to respond only to ground-overcurrent faults, while
the main trip responds only to phase-overcurrent faults.
The SR735 has eight trip indicators on the front panel,
along with a button to reset the relay. Four status
indicators provide a quick visual check of relay status. A
bar graph indicates current load as a percent of CT
rating.
Communications switches on the front panel set baud
rate, relay address, and the simulation mode for testing.
An RS-485 connection is provided for computer access.
Software is provided with the relay to allow setup and
simulation testing.
Computer access allows the display of a trip record,
which contains the pre-trip currents and the last five
trip conditions. Computer access also allows the display
of metered current values as a percent of CT rating,
output relay status, status indicators, and dial settings.
The SR735 has a drawout construction and can be door
or 19-inch rack mounted.
Application
• Feeder protection, any voltage level
Protection and Control
• Three-phase time overcurrent
• Ground time overcurrent
• Five curve shapes
• Four curve-shift multipliers per curve
• 10 time multipliers per curve
• ANSI, IAC, or IEC/BS142 curves
• Phase instantaneous overcurrent
• Ground instantaneous overcurrent
• Pickup level for each overcurrent
• Outputs: trip, aux. trip, service
• Aux. trip: 86 lockout, ground trip
• Block instantaneous on autoreclose
Monitoring