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SEL-T35
Time-Domain Power Monitor
Coming Soon
The SEL-T35 streams high-precision ac and dc voltage and current measurements to Synchrowave software for wide-area, real-time data analysis. This data stream also includes energy packets calculated every millisecond, providing energy measurements independent of frequency and phase angles.
Up to 12 analog channels and 2 binary channels stream voltage and current data at 14.4 kilosamples per second (ksps) and energy calculations at 1 ksps. Industry-exclusive energy packet technology allows you to view real-time energy exchange on the color touchscreen HMI and Synchrowave software. An integrated ride-through pack ensures that you never miss a disturbance during short-duration outages.
See the SEL-T35 and Synchrowave software in action with live data.
Starting At
$5,000 for SEL-T35#0001, including one Synchrowave Monitoring license
Pre-orderContinuous Waveform Recording—The compact SEL-T35 streams data from up to four ac current inputs, four ac voltage inputs, and four dc inputs directly to SEL Synchrowave software for visualization and historian recording.
Intuitive Front-Panel Operations—View ac and dc voltage and current measurements plus time-domain energy transfer in real time on the color touchscreen HMI as though it were an oscilloscope. An industry-first energy packet view displays 1 ms energy measurements independent of frequency and phase angles, providing more visibility into your power system.
Triggerless Data Capture—Record waveforms and time-domain energy packets at up to 14.4 ksps without preconfigured triggers. Continuously stream data to capture faults, disturbances, and normal operations and archive up to several years of gapless data.
Flexible Data Capture—Use low-level milliampere dc analog inputs to measure the output from third-party transducers, including temperature, solar irradiance, and high-energy dc voltage or current.
Simple Event Ride-Through—Protect your data stream against short-duration outages with an integrated ride-through pack, providing at least seven seconds of device power when the power supply input drops out.
Energy Packets and Wide-Area Streaming: Never Miss an Event
Conventional power monitors depend on phasor-based calculations to detect faults and disturbances, but energy flow changes faster than once per cycle—the typical measurement rate of these devices. The ksps time-domain measurements expose power system disturbances that traditional power monitors do not typically capture, allowing you to take immediate action.
Monitoring devices and power quality meters capture several cycles of waveform disturbance data based on predefined event conditions, but power system disturbances become less predictable as more distributed energy resources and nonlinear loads connect to the power system. Additionally, disturbances can last longer than the waveform recording window, and traditional recording devices may fail to capture the event.
The SEL continuous oscillography streaming and recording system, supported by devices like the SEL-T35 that capture and stream power system data, provides gapless recording of voltage, current, and energy transfer.
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Features
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Type-C USB port
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Color touchscreen display
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Backlit pushbuttons
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Power supply ride-through pack
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Current inputs
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Power supply inputs
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Communications ports
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Contact outputs
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Analog inputs
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Voltage inputs
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Contact inputs and auxiliary voltage input
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Display voltage and current waveforms in real time.
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See every joule of energy exchanged in real time—whether ac, dc, or both—for a unique view into subcycle energy transfer.
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View energy delivered to or received from the load in millisecond intervals.
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Monitor power quality anywhere with the rugged SEL-T35. You can pinpoint power quality disturbances on current and voltage circuits with clamp-on CTs and clip-on voltage leads. Synchrowave Monitoring software running on a user-supplied laptop continuously captures a 14.4 ksps waveform stream from the SEL-T35 at a rate of 35 GB/day, allowing weeks of data storage.
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Details
Wide Area Streaming
Stream continuous oscillography at 14.4 ksps using a modified IEEE C37.118 format transmitted over high-bandwidth networks to SEL-5702 Synchrowave Operations Software or SEL-5703 Synchrowave Monitoring Software.
Energy Packet Streaming
The SEL-T35 data stream includes time-domain energy packets calculated every millisecond. This industry-exclusive energy packet technology captures energy measurements independent of frequency and phase angles, eliminating frequency-tracked delay or calculation issues with nonlinear signals. Positive energy packets represent energy delivered to the load. Negative energy packets represent the energy received from the load. Negative energy packets can indicate reduced system utilization.
DC Transducer Support
Four low-level milliampere (mA) dc analog inputs measure the output from third-party transducers, including temperature, solar irradiance, and high-energy dc voltage or current.
Front-Panel Wave View and Energy Packets
The SEL-T35 plots voltage, current, and energy packet measurements on the front-panel touchscreen. Immediately see changes to a power system during switching operations, load transfer, and commissioning tests. Energy packet technology provides a unique view into subcycle energy transfer. Whether the system is ac, dc, or both, the SEL-T35 measures every joule of energy exchanged in real time.
Synchrowave Analytics
Capture system faults and disturbances using external software without relying on preconfigured trigger conditions. Applications include archiving, user calculations, subsynchronous oscillation analysis, and equipment failure analysis.
Event Ride-Through
An integrated power supply ride-through pack continues to power the SEL-T35 for at least seven seconds if the power supply input drops out. This feature ensures that the SEL-T35 never misses an event during short-duration outages.
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.
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