SEL-735 Power Quality and Revenue Meter Instruction Manual

735 Power Quality and Revenue Meter
Instruction Manual

World-class revenue and power quality metering

• Easily exceeds ANSI 0.1 and IEC 0.1 S accuracy class requirements with a 0.02 percent typical accuracy.
• Integrates seamlessly into communications and power quality (PQ) monitoring systems that use IEC 61850 or IEC 61000-4-30 Class A.
• Displays high-resolution metering data on a 5-inch, 800 x 480 color touchscreen for real-time monitoring and control.
• Tracks energy usage with up to 512 channels and provides years of load profile recording with up to 1 GB of onboard memory.
• Improves real-time situational awareness of system conditions with IEEE C37.118.1a-2014 synchrophasors.

Key Features

Accurate Revenue Metering The SEL-735 Power Quality and Revenue Meter exceeds the ANSI C12.20-2015 0.1 accuracy class and the IEC 62053-22 0.1 S accuracy class over a wide current range—from a few mA to 22 A for power factors (PFs) of 1 and 0.5. With bidirectional, full fourquadrant, and high-accuracy energy metering, the SEL-735 is the ideal meter for generation,interchange, transmission, distribution, or  industrial applications. The SEL-735  ensures high-accuracy measurements with a ±0.06 percent watt-hour  (Wh) guarantee atunity power factor and a ±0.02 percent typical rating. Accuracy-test results of approximately 1,000 SEL-735 Meters report a maximum error of 0.025 percent, outperforming ANSI 0.1 and IEC 0.1 S accuracy class requirements.
The SEL-735 accurately reports energy even in the presence of harmonics and distorted waveforms. When tested with peaked waveform distortion, the SEL-735 reports with an error of just 0.006%.

Voltage  Waveform| Current  Waveform| 0.1 Class Allowable Error %| Measured SEL-735 Error %
---|---|---|---
Sinusoidal| Sinusoidal| ±0.05| 0.003
Sinusoidal| Peaked| ±0.2| 0.006
Peaked| Peaked| ±0.3| 0.006

SEL-735 performance with peaked waveform distortion.

Instrument Transformer Compensation (ITC)
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. Compensating for each instrument transformer individually decreases replacement and maintenance costs. With the powerful combination of ITC and IEEE synchrophasors, you can choose to correct delays and errors on each phase to achieve greater system accuracy.
Waveform Capture Using Programmable Triggers
Use programmable triggers, such as voltage interruptions, to record up to 10,000 oscillography events. Enabled from the factory, the voltage, sag, swell, and interruption (VSSI) recorder time-stamps voltage excursions with up to ms resolution and records indefinitely using an adaptive sampling rate. Settings include trigger thresholds and hysteresis as a percentage of the nominal value and an automatic recording duration dependent on the length of the voltage excursion.
Load Profile Data Collection
Collect and store billing data with a simple-to-use load profile recorder that captures and stores years of data. Independent load profile recorders in the SEL-735 allow  simultaneous meter and PQ logging of up to 512 data channels. Averages, minimums, maximums, changes, and snapshots can be trended at a rate of once every three seconds. Analyzing the electrical usage for processes in your facility lets you reduce peak demand. With years’ worth of data, you can predict system trends and allocate resources effectively.
Time-of-Use (TOU) Metering
Capture rate-based demand and energy consumption. TOU metering, configured with a user-defined calendar, allows you to bill consumption at different rates based on season, day type, and time of day. The SEL-735 program automatically reads and resets demand; there is no need to manually reset meters.

Product Overview

Touchscreen Overview

Touchscreen Display Features and Functions

The SEL-735 Meter’s 5-inch, 800 x 480 color touchscreen displays high- resolution metering and power quality information without the need for a PC. With it, you can view metered quantities, phasor diagrams, voltage and current waveforms, and more.
Phasor Diagrams
Analyze the real-time voltages and currents in a power system during balanced and unbalanced conditions. This allows you to verify that the system wiring is correct during commissioning, see changes in system conditions as loads vary, and more. Fundamental Metering
Monitor the power and power factor in your system to measure system efficiency and real-time load flow. Energy Metering
View the energy metering quantities imported and exported by the system. You can reset the energy values via the display and record the time and date of reset. Test Mode
Speed up accuracy testing by visualizing test pulses, accumulated energy, and instantaneous signals. When in Test Mode, the SEL-735 freezes the billing quantities to isolate your test inputs from revenue billing. Real-Time Oscilloscope
Display cycle-by-cycle voltage and current waveforms in real time. The Wave View feature offers oscilloscopelike functionality, improving your awareness of system distortions and  allowing you to troubleshoot PQ issues that can affect sensitive equipment. Four-Quadrant Metering
Monitor power and energy accumulation in each delivered/received, lagging/leading quadrant for bidirectional metering. Four-quadrant VAR metering allows you to verify system efficiency. Large Three-Line Display
Continuously monitor all three power system phases from a distance. Customizable screens provide useful defaults, large fonts, and numerous choices for analog quantities.

Applications

Grid Stability Improvement Identify low-frequency system oscillations, monitor intermittent generation in real time, and improve system models with time- aligned data samples. Accurate, high-resolution data can help you identify when an islanded power system can be reconnected to the grid to help stabilize it. The SEL-735 complies with the latest version of the synchrophasor standard, IEEE C37.118.1a-2014 Class P, making it ideal for applications requiring fast response times under dynamic conditions.
When used as a phasor measurement unit (PMU), the SEL-735 provides synchrophasor data for the frequency and phase, positive-sequence components, 4 user-defined analog quantities, and 16 digital status bits. Revenue Metering and Net Billing
The SEL-735 provides flexibility and control for metering applications. The meter can collect and report billing, PQ, and historical data; replace obsolete transducers; and poll directly from SCADA with DNP3 or Modbus protocols. It also supports complex tariffs with multiple load profile data recorders and provides flexible TOU metering with a 20-year calendar. The predictive demand feature provides alarms so you can initiate load control and reduce demand charges. Transformer and Line-Loss Compensation
Installing the SEL-735 on the low side of the power transformer reduces instrumentation costs. You can choose from four metering and billing locations to optimize the installation for your needs. Data Recording
The SEL-735 stores disturbance data for years. These event records and waveform captures are easy to retrieve for analysis. The SEL-735 can record the following quantities:

• VSSI with CBEMA/ITI reports
• Symmetrical components
• Measurement aggregation in 3-second, 10-minute, and 2-hour intervals
• Harmonic angles for voltage and current up to the 63rd* harmonic
• High-resolution (512 samples/cycle*) waveform capture
• High-speed load profile recording with 3-second resolution*
• Real-time waveforms with the Wave View oscillography functionality
  Optional feature (based on PQ variant)

PQ Standards Compliance
Ensure reliable measurements from all compliant devices connected to the same metering points.

• Current, voltage, power, energy, and unbalance data measurements compliant with IEC 61000-4-30 Class A.
• Harmonics and harmonic group measurements as defined by IEC 61000-4-7:2009.
• Monitoring of individual harmonic values, interharmonics from 5 to 3,800 Hz in 5 Hz bins, total harmonic distortion (THD), crest factor, and K-factor.
• Short- and long-term flicker values assessed in accordance with IEC 61000-4-15:2010.
• Three power quality options to fit any application and budget.

Energy Management Optimization
Use acSELErator ® Meter Reports SEL-5630 Software to analyze data, predict system trends, and make planning decisions. For example, you can reduce costs by moving overlapping processes to off-peak hours. To increase visibility, Meter Reports can combine water, air, gas, electricity, and steam (WAGES) consumption or generation in one
report.

Communications Integration and Security

Advanced communications deliver critical and historical information in real time to virtually any communications system.
Integrate Multivendor Intelligent Electronic Devices (IEDs) With IEC 61850
The SEL-735 optionally supports the IEC 61850 protocol, including GOOSE and MMS, for client/server and peer-topeer communications, substation design and
configuration, testing, and project standards.
Transfer Real-Time Data and Files
Use MMS in IEC 61850 applications to transfer real-time data, including files, within a substation TCP/IP LAN. Interoperate Using DNP3 and Modbus
Integrate meters with SCADA over DNP3 and Modbus
(RTU and TCP/IP) to provide event records, predictive demand alarms, and profile data for analysis.
Monitor the Power System Using Synchrophasors
The SEL-735 with PMU capability allows improved system visualization, real- time situational awareness, and widearea control. With this capability, you can analyze system
topologies and disturbances with simple, accurate, and time-stamped measurements, including root-mean-square (rms) values and digital statuses. Simplify Metering and Control Using SEL Protocols The SEL Fast Meter protocol supports binary messages to transfer metering and control messages. The SEL ASCII protocol is designed for manual and automatic communications. MirrorEd BitS ® communications is a direct meter-to-meter communications protocol that allows meters to exchange information quickly and securely.
Collect and Manage Data Via Itron MV-90
The SEL-735 provides MV-90 support via the SEL ASCII protocol. Itron MV-90 meter-reading software communicates to any SEL-735 communications port and automates meter reads for large-scale metering installations. Employ Telnet Communications Up to six simultaneous Telnet sessions support settings transfer, read device statuses, and automate meter testing over the network. Communicate Data Securely
The SEL-735 offers three security levels to limit access to only authorized users. In addition, each port can be independently disabled or set to provide read-only or read-write access.
For system-level security, adding the SEL-3620 Ethernet Security Gateway offers user account management, substation firewall protection, and NERC CIP compliance support. The SEL Real-Time Automation Controller (RTAC) can provide secure, encrypted communications and works as a remote intelligence gateway. Cryptographically signed firmware ensures that the  meter integrity is not compromised.

Flexible Installation

Outdoor Enclosure
Replace socket meters with a low-cost enclosure and prewired FT-1 test switch. You can quickly install the meter with the support of thoughtful design details, such as DIN rails for accessories; a lockable, stainlesssteel latching system; wall-mount brackets; prewiring from meter to test switch; and wire clamps. The fully sealed enclosure complies with NEMA 4X, IEC  529, and IP66 protection requirements. Easily Extractable Meter (EXM)
The EXM option offers the following benefits:

• Meter extraction in less than one minute.
• Improved safety versus draw-out and socket meters.
• Self-shorting CT connector.
• Clearly marked wires.
• Easier installation at half the cost of a draw-out meter.
• Simplified field testing with integrated connectors.
• Simple retrofit brackets for replacing draw-out meters.

Mounting Options and Accessories
Refer to the SEL-735 Accessories Catalog, available at selinc.com/literature /product-catalogs, for more information on brackets, retrofit bezels, cover plates, and other accessories. Portable Power Quality Meter
Monitor PQ anywhere with the rugged SEL-735 Portable Power Quality Meter. You can pinpoint PQ problems and energy consumption on subcircuits with clamp-on CTs and clip-on voltage leads. In addition, the portable meter lets you log years’ worth of data with 1 GB of onboard memory.

SEL-735 Specifications

General

Displays| Customizable three-line or single-line display 5-inch color touchscreen display, 800 x 480 pixels
---|---
AC Current Inputs| Current Class CL2/CL10/CL20, optimized for low-end accuracy Measurement: 0.001-22 A continuous
Current Class CL10/CL20, optimized for 100 A fault recording Measurement: 0.005-22 A continuous; 22-100 A symmetrical
AC Voltage Inputs| Revenue: 28-300 V,_, 48-520 Vt-L Measurement: 5-300 V,„, 9-520 V,.., Burden:10 MO
I/O Options| 4 digital inputs, 4 digital outputs (solid-state or electromechanical) 4 analog outputs, 4 solid-state digital outputs
Power Duality Options| Basic:128 MB of memory,16 channels of load data profiling (LDP),16 samples per cycle waveform, and 15th-order harmonics
Intermediate: 256 MB of memory,192 channels of LDP,128 samples per cycle waveform, 270 VSSI summary events, flicker, and 63rd-order harmonics
Advanced: Intermediate features and 1 GB of memory, 512 channels of LDP,
512 samples per cycle waveform, 600 VSSI summary events, Wave View, power harmonics, and interharmonics
Processing| AC voltage and current inputs: 512 samples per power system cycle Control processing: half-cycle processing interval
Energy Accuracy
(Form 5 and Form 9 Only)| ANSI C12.20 0.1 Accuracy Class IEC 62053-22 Accuracy Class 0.1 S IEC 62053-23 Accuracy Class 2 S
Communications Modes| Up to ten simultaneous communications sessions via EIA-232 serial, EIA-485/EIA-422 multidrop, infrared, and copper or fiber-optic Ethernet
Communications Protocols| SEL ASCII/Compressed ASCII, SEL Fast Operate/Fast Meter, MIRRORED Bin communications, SEL Distributed Port Switch (LMD), Modbus RTU/TCP, DNP3 Serial and LAN/WAN, FTP, TCP/IP, Simple Network Time Protocol (SNTP), IEC 61850, Telnet, Won MV-90, and IEEE C37.118.1a-2014 synchrophasors
IEEE C37.118.10-2014 Synchrophasors| Up to 60 messages per second (60 Hz system)
Power Supply| 125/250 volt supply: 85-264 Vac (50/60 Hz), 85-275 Vdc
24/48 volt supply:19-58 Vdc
12/24 volt supply: 9.6-30 Vdc (not available on the color touchscreen meter)
Frequency and Rotation| 60 Hz or 50 Hz system frequency specified at time of order; user-selectable ABC/ACB phase rotation
Operating Temperature| —40° to +85*C (-40° to +185°F)
Panel-Mount Dimensions| Standard:192 mm x 144 mm x 148 mm EXM: 214 mm x 211 mm x 136 mm

SCHWEITZER ENGINEERING LABORATORIES
Making Electric Power Safer, More Reliable, and More Economical
+1.509.332.1890
info@selinc.com
selinc.com
© 2022 by Schweitzer Engineering Laboratories, Inc.
PF00646 · 20220621

References

• selinc.com
• selinc.com/literature/product-catalogs

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