- Two-Winding
Current Differential Protection
Sensitive current differential protection with programmable single- or dual-slope
percentage restraint, supervised by a choice of second- and fourth-harmonic
blocking or restraint elements, plus fifth-harmonic and dc blocking elements
for secure protection of up to two windings. Phase current harmonic blocking
is set for either common or independent winding basis. Unrestrained high-set
differential elements provide fast operation for high-magnitude internal
faults. "Around the clock" phase angle compensation settings and automatic
tap calculations simplify settings.
- Individual
Winding Overcurrent Protection
Torque-controllable overcurrent elements, including one instantaneous, one
definite-time, and one inverse-time element each for phase, negative-sequence,
and residual ground currents, provide comprehensive overcurrent protection
on each winding input.
- Through-Fault
Recording and Monitoring
Through-fault duty is recorded and accumulated for use in SELOGIC® control
equations or manual monitoring.
- Protection
and Control Logic
Restricted Earth Fault (REF) logic for sensitive grounded-wye winding ground
fault protection. SELOGIC control
equations with SELOGIC variables, timers, latch
bits, and remote control elements for customizing advanced protection and
control schemes. Local programmable control elements and programmable text
display points for advanced local operator interface.
- Metering
and Reporting
Oscillographic event reports (up to seven 60-cycle reports), Sequential Events
Recorder (SER) reporting, and accurate metering eliminate or reduce external
recorder and metering requirements. Station battery voltage monitor and circuit
breaker contact wear monitor provide important data for Reliability Centered
Maintenance (RCM) programs. Use with SEL-2600A RTD
Module to meter temperatures from as many as 24 RTDs.
- ACSELERATOR® QuickSet™ Software
Develop relay settings off-line, program SELOGIC control equations, and analyze post-fault event reports.
|
- Two Restricted
Earth Fault (REF) elements for sensitive protection of wye-connected
windings.
- Panel-mount
or rack-mount hardware package.
- Chassis available
for one additional I/O board.
- I/O board with
contact sensing inputs and standard outputs, or high-current interrupting
outputs.
- Distributed
Network Protocol (DNP) 3 Level 2 Slave communications protocol.
- Conformal Coating—Protect equipment from harsh environments and airborne contaminants such as hydrogen sulfide, chlorine, salt, and moisture.
 Learn more about conformal coating.
- Use the temperature
metering element to activate a control or issue a warning or alarm
when the transformer oil temperature exceeds user-set threshold.
- Apply one SEL-387A
Relay to protect any two-winding power transformer.
Perform predictive maintenance based on accumulated through-fault
duty as compared to transformer capability as defined in ANSI Standard
C57.109. Use recorded fault values or an alarm set point to initiate
an evaluation of transformer maintenance needs.
- Protect reactors,
generators, large motors, and other multiterminal power apparatus.
- Apply with
any combination of delta- or wye-connected CT secondary circuits.
- Use built-in
winding overcurrent elements for backup protection.
- Use SELOGIC control
equations to create breaker failure logic.
- Detect ground
faults through delta-wye transformer banks, or provide sensitive
phase-to-phase protection, independent of load current, with negative-sequence
overcurrent element.
- Use low-side
overcurrent elements for backup distribution bus or feeder protection.
- Use any one
of up to six independent setting groups to quickly adapt the relay
to different application scenarios.
- Use SEL-5040
Power System Report Manager Software to automatically gather
relay event reports on your PC and manage them with a database.
- Use SEL-5010
Relay Assistant Software to manage your relay settings.
- Use SEL-5601
Analytic Assistant Software to display oscillograms and vector
diagrams to analyze event reports.
Budgetary
Retail, Quantity 1: $3,680
Fully Optioned Price: $5,523
(Prices
displayed are for planning purposes and are subject to change.
Contact your SEL sales representative today
for a quote on configurations and quantities to meet your needs.)
|
