Increase Power System Insights With Continuous Waveform Streaming and Digital Fault Recording Solutions
Continuous waveform streaming and recording from SEL delivers gapless, full-bandwidth visibility into voltage, current, power, and energy transfer across your system. Unlike traditional digital fault recorders, continuous waveform data captures every event without relying on predefined trigger conditions.As inverter-based resources and large nonlinear loads—like data centers—connect to the grid, system dynamics grow increasingly complex. Sudden step changes can introduce voltage disruptions, frequency deviations, and power oscillations that trigger-based monitoring may miss.The SEL continuous waveform recording system, powered by Synchrowave software, streams fixed-rate, time-synchronized data from distributed devices at sampling rates up to 14.4 kilosamples per second (ksps). These high-resolution data meet Nyquist criteria for frequency-domain reproduction, eliminating the need for phasor approximations or frequency tracking. The result is high-fidelity measurements with wide bandwidth and precise time alignment.In addition to serving as a digital fault recorder, the SEL system also offers comprehensive metering and power quality measurements with the Virtual Meters application. Once deployed, the physical infrastructure remains unchanged while Synchrowave software evolves—delivering scalable analytics and visualization tools that grow with your needs.
Minimize the Cost of Harmonic Mitigation With Continuous Waveform RecordingDavid Renfro from Infiniti Integration Services describes SEL continuous waveform recording as the arbiter of truth and as a method for capturing all disturbances without custom event trigger logic. Learn how he optimizes filter designs for harmonics caused by variable-speed motor drives.
SEL Synchrowave Software Displays and Analyzes Continuous Waveform Data From Streaming DevicesSee Synchrowave software in action with live data.
Virtual metering enables power quality monitoring using existing devices—no extra hardware is needed. Leverage the Virtual Meters application with installed SEL streaming devices to calculate metering quantities from continuous waveform streaming data. It calculates fundamental and rms voltage, current, and power values as well as frequency and power factor.
Flexible Hardware Supports Any Application
Continuous Waveform Streaming: Product Comparison
| SEL-735 | SEL Axion | SEL-T35 | |
|---|---|---|---|
| Streaming sample rate | 3 ksps | 3 ksps | 14.4 ksps |
| Three-phase circuits | 1 | 16 | 1 |
| 0–50 mA analogs | N/A | N/A | 4 |
| Digital inputs | Up to 6 | Up to 1,700 | 2 |
| Auxiliary 0–300 V ac/dc input | N/A | N/A | 1 |
| Energy packets | N/A | 10 ms | 1 ms |
| Synchrowave software license | Optional | Optional | Included |
| Onboard storage | Up to 1 GB load profile and event reports | 8 TB* | N/A |
| DC metering | N/A | N/A | Included |
Learn more about continuous waveform streaming and request a no-cost, virtual consultation today.