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Meter Energy and Power Quality with Confidence

Now with 1 GB recording memory, digitally signed firmware, ANSI 0.1 accuracy class compliance, and other enhancements

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SEL-735

Power Quality and Revenue Meter

The SEL-735 Power Quality and Revenue Meter is fully Class A-compliant to the IEC 61000-4-30 power quality standard. With reliable Class A measurement, operators can identify power system anomalies and isolate their source with confidence.

For high-accuracy revenue metering applications, the SEL-735 exceeds ANSI C12.20-2015 0.1 and IEC 62053-22:2003 0.2 accuracy class requirements over a wide current range. This makes the SEL-735 the premiere choice for generation, interchange, transmission, distribution, or industrial applications.

You can enhance the capabilities of SEL meters with acSELerator Meter Reports SEL-5630 Software. Meter Reports allows you to optimize your system by analyzing data, identifying usage trends, and diagnosing system problems.

Accessories and Mounting Options

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Ensure Accurate Revenue Metering—Exceed ANSI C12.20 0.1 and IEC 62053-22 0.2 accuracy class requirements with bidirectional, full four-quadrant energy metering for generation, interchange, transmission, distribution, or industrial applications. Many new metering installations, such as distributed generation, operate over a wide current range. The SEL-735 accurately reports energy even in the presence of harmonics and distorted waveforms and provides high accuracy over an extended operating range.

Compensate for Errors in Instrument Transformers—Increase metering accuracy by compensating for instrument transformer errors. The SEL-735 interpolates six user-defined calibration points and corrects ratio and phase errors over the entire measurement range. You can decrease replacement and maintenance costs by compensating for each instrument transformer individually.

With the powerful combination of instrumentation transformer compensation and IEEE C37.118 synchrophasors, you can choose to correct delays and errors on each phase to achieve greater system accuracy.

Automate Data Reading (Time-of-Use)—Capture rate-based demand and energy consumption, configured with a user-defined calendar. A user-defined schedule instructs the meter to perform a particular action at a specified time, such as a self-read or demand reset. You can apply time-of-use metering to bill consumption at different rates based on season, day type, and time of day.

Measure and Report Reliable Power Quality Indicators—Ensure precise and reliable measurements with IEC 61000-4-30 Class A power quality compliance. You can size feeders appropriately, safeguard equipment, and plan upgrades using power quality indicators for predictive maintenance. The SEL-735 measures harmonics, interharmonics, flicker, power factor, voltage disturbances, K-factor, and other key power quality indicators.

Log Profile Data—Collect billing data with a simple-to-use load profile recorder that captures years of data. Independent load profile recorders in the SEL-735 allow simultaneous meter and power quality logging of up to 512 analog channels for up to 20 years. The SEL-735 can trend averages, minimums, maximums, changes, and snapshots at a rate as often as every three seconds.

Capture Waveforms and Trigger Records—Record up to 10,000 oscillography events associated with programmable trigger conditions, such as a voltage interruption. You can also capture real-time voltage and current signals in both the time and frequency domains with the Wave View oscillography functionality.

Voltage Sag, Swell, and Interruption Logging (VSSI)—Enabled from the factory, the VSSI recorder time-stamps voltage excursions with up to 4 ms resolution and records indefinitely using an adaptive sampling rate. Settings include trigger thresholds from ±3 percent to ±100 percent of the actual value and an automatic recording duration dependent on the length of the voltage excursion.

Overview

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Videos

How to Use SEL-735 WAVE VIEW

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How to Use SEL-735 WAVE VIEW

How a Data Center Achieves Utility-Grade Metering

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How a Data Center Achieves Utility-Grade Metering

Metering How-to Videos

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Metering How-to Videos

Accurate Metering
The SEL-735 exceeds the requirements of ANSI and IEC accuracy standards over a wide current range. Capable of reliable and precise metering even in the presence of harmonics, the SEL-735 exceeds the 0.1 accuracy class requirements of ANSI C12.20-2015.

Load Profile Data Collection
You can collect billing data with a simple-to-use load profile recorder that captures years of data.

Advanced Integration
The SEL-735 integrates seamlessly into Itron MV-90 billing software, IEC 61850, DNP3, IEEE C37.118-2011, Modbus, or SEL communications architectures. Multiple communications ports and protocols enable the SEL-735 to simultaneously communicate with up to ten devices.

IEEE C37.118-2011 Synchrophasors

IEEE C37.118-2011 Synchrophasor Performance Class Summary
Standard ComplianceIEEE C37.118-2011
Performance ClassP
Reporting Rates1 to 60 messages/second for 60 Hz systems
1 to 50 messages/second for 50 Hz systems
Phasor QuantitiesPhase and positive sequence components
Digital Status Bits16
Optional AnalogsFour user-defined quantities including rms values
Server Outputs1 to 2 sessions at 60 (or 50) messages/second

Instrument Transformer Compensation
The SEL-735 is the only SEL product to provide both angular and magnitude compensation for instrument transformer errors. Correct delays and errors on each phase to achieve high-performance system accuracy, even when using protection-grade transformers. The SEL-735 is equipped with the powerful combination of IEEE C37.118 and Instrument Transformer Compensation (ITC), so you can choose to apply correction at either the synchrophasor interface or all metering interfaces, providing flexibility for many applications.

IEC 61850 GOOSE and MMS
Using IEC 61850 GOOSE, the SEL-735 can communicate peer to peer with another device to exchange metering, power quality, or control data in real time over Ethernet. Or, it can use MMS to report to an MMS client, such as a SCADA master.

Transformer and Line-Loss Compensation
By entering transformer nameplate and line impedance information directly into the meter, you can automatically compensate for transformer or line losses and move the billing point.

Time-of-Use (TOU) Metering
You can report flexible, time-differentiated energy and demand registers with multiple day types, rates, and seasons as well as a 20-year programmable calendar.

Predictive Demand
With the predictive demand function, you can monitor accumulated demand and alarm when the demand exceeds a user-defined limit. The SEL-735 can then shut down loads or peak-shave with generation to avoid demand charges. The predictive demand alarm is available through IEC 61850, Modbus, DNP3, Mirrored Bits communications, and the front-panel LEDs.

Flexible Mounting Options
A variety of bezels, brackets, enclosures, and rack-mount kits are available for quick, easy, and clean-looking retrofit installations and mounting flexibility.

Power Quality and Recording Options
Choose from three power quality options to fit any application and budget.
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Physical Chassis
Panel mount: horizontal or vertical with ANSI optical port or EIA-232 port 
Easily Extractable Meter (EXM): vertical panel mount and ANSI optical port

Enclosure
16" x 18" NEMA 4 enclosure, wired to FT-1 test switch
Portable case with voltage clips
Front-panel sealing cover

Meter Form
Form 5, Form 36, or Form 9

Power Supply
12/24 Vdc, 24/48 Vdc, or 125/250 Vdc or Vac

Input Voltage (Vdc or Vac; includes 3 contact outputs and 2 inputs)
24, 48, 110, 125, 220, or 250

Communications
EIA-232 and EIA-485
Ethernet: 10/100BASE-T, 100BASE-FX fiber-optic (available in single mode or multimode)

Communications Protocols
IEC 61850 with GOOSE and MMS

Conformal-Coated Circuit Boards

Literature

Documents sorted by newest first.

Publications

Drawings

Minimum QuickSet Version

Product Revision Z Number Minimum Software Version
SEL-735 R118-V1 011 6.6.0.0
Supports Forms 5, 36, and 9
SEL-735 R117-V2 010 6.6.0.0
Supports Forms 5, 36, and 9

Product Feature Comparison
SEL-734 and SEL-735 Comparison Chart

Power Quality and Recording Options
Choose from three power quality options to fit any application and budget.

FeatureBasicIntermediateAdvanced
General
Memory128 MB256 MB1 GB
Max Harmonic Order15th 63rd63rd
Interharmonic QuantitiesNoNoYes
Harmonic AnglesNoNoYes
Power HarmonicsNoNoYes
Waveform Capture
Samples Per Cycle1616, 12816, 128, 512
Duration (cycles)1515–60015–600
Number of Events25633–6,000101–10,000
COMTRADE ReportsYesYesYes
Wave View OscillographyNoNoYes
Load Profile Data
Recorders × Channels1 × 16 12 × 16 32 × 16
Acquisition Rates 1–120 min 3–59 s, 1–120 min 3–59 s, 1–120 min
Storage Duration0–10 years, varies with acquisition rate and number of channels used0–20 years, varies with acquisition rate and number of channels used0–20 years, varies with acquisition rate and number of channels used
Example Duration10 years for 16 channels logged every 10 min20 years for 16 channels logged every 10 min20 years for 16 channels logged every 10 min
Voltage Sag, Swell, Interruption (VSSI) Recorder
Typical Number of Summary Events270270600
Number of Detailed Rows60,00060,000>130,000
Minimum Disturbance Duration1/4 cycle1/4 cycle1/4 cycle
Sampling Rate4 samples/cycle; 1 sample/day, adaptive4 samples/cycle; 1 sample/day, adaptive4 samples/cycle; 1 sample/day, adaptive
Sequential Events Recorder (SER)
Number of Events>80,000>80,000>80,000
Number of Channels Monitored≤72≤72≤72
IEC 61000-4-30 PQ Compliance
150/180-Cycle, 10-Minute, 2-Hour-Class AClass A
Flicker-Class A
(10-min, 2-hr updates)
Class A
(1-min, 10-min, 2-hr updates)
Voltage Harmonics - - Class A
Current Harmonics--Class A

 

Minimum QuickSet Version

Product Revision Z Number Minimum Software Version
SEL-735 R118-V1 011 6.6.0.0
Supports Forms 5, 36, and 9
SEL-735 R117-V2 010 6.6.0.0
Supports Forms 5, 36, and 9

Product Certifications