SEL-735

Accurate Revenue Metering
Exceed ANSI C12.20 and IEC 62053-22 0.2 class accuracy 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. Ensure high-accuracy measurements with a
±0.06 percent Wh guarantee at unity power factor and a
±0.02 percent typical rating.
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. Decrease replacement and maintenance costs by compensating for each instrument transformer individually. With the powerful combination of instrumentation transformer compensation and IEEE C37.118, customers can choose to correct delays and errors on each phase to achieve greater system accuracy.
Load Profile Data Collection
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 PQ logging of up to 192 data channels. Trend averages, minimums, maximums, changes, and snapshots at a rate of once every three seconds.
Time-of-Use (TOU) Metering
Capture rate-based demand and energy consumption, configured with a user-defined calendar. Apply TOU metering to bill consumption at different rates based on season, day type, and time of day. The program automatically self-reads and resets demand; there is no need to manually reset meters.
Capture Waveforms and Trigger Records
Record approximately 3,000 events associated with programmable trigger conditions, such as a voltage interruption. Enabled from the factory, the voltage, sag, swell, and interruption (VSSI) recorder time-stamps voltage excursions with up to 1 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.

Identify low-frequency system oscillations, monitor intermittent generation in real time, and improve system models with time-aligned data samples. Accurate data at high sampling rates can help utility operators identify situations when an islanded power system can still stay connected to the grid to help stabilize it.
The SEL-735 includes the latest version of the synchrophasor standard,
IEEE C37.118-2014 Class P, which makes 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 frequency, phase, positive sequence components, four user-defined analog quantities, and 14 digital status bits.
Monitor grid conditions with timealigned synchrophasor messages.
The SEL-735 gives you the flexibility and control you need for your metering applications. Collect and report billing,
PQ, and historical data. Replace obsolete transducers, and poll directly from SCADA with DNP3 or Modbus ® protocols. Support complex tariffs with multiple load profile data recorders, and provide flexible TOU metering with a 20-year calendar. The predictive demand feature lets you initiate load control and reduce demand charges.
SEL-735
Plant Net
Input/Output
SEL-735 SEL-735
Remote Access
RTAC
SEL-3530
Control
Center
SEL-735 SEL-735
Auxiliary
Loads
G G
High-Accuracy Revenue Metering/Net Billing
Process
Loads

Install the SEL-735 on the low side of the power transformer to reduce instrumentation cost. Choose from four metering and billing locations to optimize the installation for your needs.
Billing Position Meter Position
Utility
Supply Line Load Line
Transformer
Ensure accurate billing with transformer/line loss compensation.
Customer
Store disturbance data in the meter for several years, and retrieve them for analysis.
The following quantities can be recorded:
• VSSI with CBEMA/ITI reports
• Symmetrical components
• Measurement aggregation in
10-/12-cycle, 3-second,* 10-minute,* and 120-minute* 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*
*Optional Features
View event records and waveform captures of system anomalies.
VSSI reports detail system interruptions with 1 ms resolution.

Ensure reliable measurements from all compliant devices connected to the same metering points.
• Measure current, voltage, power, energy, and unbalance data compliant with IEC 61000-4-30.
• Harmonics and harmonic groups are measured as defined by IEC
61000-4-7:2009.
• Monitor individual harmonic values, interharmonics from 5 to 3,800 Hz in 5 Hz bins, THD, crest factor, and
K-factor.
• Assess short- and long-term flicker values in accordance to IEC
61000-4-15.
Use ac
SEL
Erator
® Meter Reports
SEL-5630 Software to analyze data, predict system trends, and make planning decisions. Using data logged as often as every 3 seconds, cut costs by optimizing a schedule that moves overlapping processes to off-peak hours.
Generate metering reports, and analyze data.

Simple Front-Panel Navigation
Six Programmable LEDs Custom Local Controls
ANSI Type II Optical Port or
EIA-232 Port
Custom Nameplate and Barcode

Main Board: RJ45 Copper or
Fiber-Optic Ethernet, EIA-232,
IRIG-B, EIA-232/-485
Communications Board
(Expansion Slot #1): EIA-485,
Telephone Modem, EIA-232
CT Board: Ia, Ib, Ic
Power Supply Board:
2 Inputs, 3 Outputs
Sealing Provision
I/O Board (Expansion Slot #2):
4 Inputs, 4 Outputs (Solid-
State or Electromechanical); or 4 Analog Outputs,
4 Solid-State Outputs
PT Board: Va, Vb, Vc, Vn

Integrate Multivendor Intelligent Electronic Devices (IEDs)
With IEC 61850
The meter 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.
Simplify Metering and Control Using SEL Protocols
SEL Fast Meter protocol supports binary messages to transfer metering and control messages. The SEL
ASCII protocol is designed for manual and automatic communications. M irrorEd
B itS
® communications is a direct meter-to-meter communications protocol that allows meters to exchange information quickly and securely.
Transfer Real-Time Data and Files
Exchange files between computers over a TCP/IP network.
The manufacturing messaging specification (MMS) is used in IEC 61850 applications and provides services for the transfer of real-time data, including files, within a substation LAN.
Collect and Manage Data Via Itron ® MV-90 ®
The meter 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.
Interoperate Using DNP3 and Modbus
Integrate meters with SCADA over DNP3 and Modbus
(RTU and TCP/IP). Communicate event records, predictive demand alarms, and profile data for analyses.
Telnet
Up to six simultaneous Telnet sessions support settings, reading device status, and automating meter testing via the network.
Monitor the Power System Using Synchrophasors
The SEL-735 with PMU capability allows improved system visualization, real-time situational awareness, and widearea control. Analyze system topologies and disturbances with simple, accurate, and time-stamped measurements, including rms values and digital statuses.
Communicate Data Securely
The SEL-735 offers three security levels to limit access to authorized users. In addition, each port may be independently disabled or set to read-only or read-write access.
For system level security, the SEL-3620 Ethernet Security
Gateway offers user account management, substation firewall protection, and NERC CIP requirement support, among other features. The SEL Real-Time Automation
Controller (RTAC) uses encrypted communications for secure communications and may be used as a Remote
Intelligent Gateway.
SSH Encryption
Restricted Access
SEL-3620
Operations/Accounting/Planning
Security
Gateway
Modbus ®
Engineering Access
SEL-2730M
IEC 61850
Ethernet
Switch
DNP3
SEL-3530
Real-Time
Automation
Controller (RTAC)
SEL-735 SEL-735
SEL-3025 SEL-9192
Serial Shield Modem
Encrypted Communications
SEL-9192
Modem
SEL-3025
Serial Shield Itron ® MV-90 ®

• Replace socket meters with a low-cost enclosure and prewired FT-1 test switch.
• Quickly install the meter with the support of thoughtful design details, such as DIN rails for accessories; a lockable, stainless-steel latching system; wall-mount brackets; and wire clamps. The fully sealed enclosure complies with NEMA 4X, IEC 529, and IP 66 protection requirements.
• Extractable in less than one minute.
• Safer than draw-out and socket meters.
• Self-shorting CT connector.
• Clearly marked wires.
• Easier to install and half the cost of a draw-out meter.
• Simplified field testing with integrated connectors.
• Simple retrofit brackets replace draw-out meters.
1 2
Pull quick-release latches.
3
Hinge meter down.
4
Outdoor Enclosure Mounting
Refer to the SEL-735 Accessories Catalog, available at www.selinc.com/literature/product-catalogs, for more information on brackets, retrofit bezels, cover plates, and other accessories.
Remove quick disconnects.
Easily extract the meter.
Kit 915900063
Kit 915900136
Horizontal Meter and Test Switch Vertical Bezels

• Monitor PQ anywhere with the SEL-735 Portable Power
Quality Meter.
• Install a temporary meter anywhere with a PQ meter in a rugged portable case.
• Pinpoint PQ problems and energy consumption on subcircuits with clamp-on current transformers and clipon voltage leads.
• Log years’ worth of data with 128 MB of onboard memory.
Safety jacks for voltage and current Rugged travel enclosure
Power factor, harmonic, imbalance, and flicker trending
120/240 Vac line power
128 MB of data storage
Standard Ethernet port for rapid data retrieval
Select CTs from
200:1, 1000:5, 2000:5,
3000:5 options

AC Current Inputs Current Class CL2/CL10/CL20, optimized for low-end accuracy
Revenue: 0.010–22 A
Measurement: 0.001–22 A continuous
Current Class CL10/CL20, optimized for 100 A fault recording
Revenue: 0.050–22 A
Measurement: 0.005–22 A continuous; 22–100 A symmetrical
AC Voltage Inputs Revenue: 28–300 V
L–N
, 57–520 V
L–L
Measurement: 5–300 V
L–N
Burden: 10 MΩ
, 9–520 V
L–L
I/O Options 4 digital inputs, 4 digital outputs
(solid-state or electromechanical)
4 analog outputs, 4 solid-state digital outputs
Processing
Communications
Modes
Communications
Protocols
IEEE C37.118-2011
Synchrophasors
AC voltage and current inputs:
512 samples per power system cycle
Control processing 1/2-cycle processing interval
Up to ten simultaneous communications sessions via EIA-232 serial, EIA-485/EIA-422 multidrop, infrared, copper or fiber-optic Ethernet
SEL ASCII/Compressed ASCII, SEL Fast Operate/Fast Meter, M
Itron MV-90, and IEEE C37.118 synchrophasors
Up to 50 messages per second (50 Hz system)
Up to 60 messages per second (60 Hz system) irrorEd
B itS communications, SEL Distributed
Port Switch (LMD), Modbus RTU/TCP, DNP3 Serial and LAN/WAN, FTP, TCP/IP, SNTP, IEC 61850, Telnet,
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
60 Hz or 50 Hz system frequency specified at time of order; user-selectable ABC/ACB phase rotation Frequency and
Rotation
Operating
Temperature
Panel-Mount
Dimensions
–40˚ to +85˚C (–40˚ to +185˚F)
Standard: 192 mm x 144 mm x 148 mm
EXM: 214 mm x 211 mm x 136 mm

Making Electric Power Safer,
More Reliable, and More Economical
Schweitzer Engineering Laboratories, Inc.
Tel: +1.509.332.1890 | Email: info@selinc.com | Web: www.selinc.com
© 2016 by Schweitzer Engineering Laboratories, Inc.
PF00261 · 20160331