The SEL-735 is a high-accuracy power quality and revenue meter, compliant with IEC 61000-4-30 Class A standards, designed for generation, transmission, and industrial applications.
1.1 Overview of the SEL-735 Power Quality and Revenue Meter
The SEL-735 is a high-performance, Class A-compliant power quality and revenue meter designed for accurate energy measurement and advanced power quality analysis. It supports multiple connection forms and offers high-accuracy measurements with 0.02% typical rating. Ideal for industrial, utility, and generation applications, it combines detailed power quality monitoring with versatile communication options, ensuring reliable operation and compliance with international standards.
1.2 Key Features and Applications
The SEL-735 features advanced power quality analysis, including harmonic and interharmonic detection, and supports synchrophasor measurements for real-time monitoring. It offers four-quadrant metering for bidirectional energy tracking and is suitable for applications in generation, transmission, distribution, and industrial settings. With high-accuracy measurements and compliance with IEC standards, it is a versatile solution for both revenue metering and power quality monitoring.
Installation and Mounting
The SEL-735 is mounted using four screws in a rectangular panel cutout, requiring specific tools for secure installation. It supports various voltage and current connections, ensuring accurate metering and reliability.
2.1 Front-Panel Layout and Components
The front panel features programmable pushbuttons, LEDs, an LCD display, a keypad, a test mode LED, and an optical communications port. These components provide intuitive operation, status indication, and configuration access, ensuring user-friendly monitoring and control of the meter’s functions.
2.2 Rear-Panel Layout and Connections
The rear panel includes voltage and current terminals, communication ports, and auxiliary connections. It supports Form 9, Form 5, and Form 36 wiring configurations, ensuring compatibility with various electrical systems. Clear labeling and secure connectors facilitate safe and accurate installation, while optional accessories enhance functionality and integration with external systems.
2.3 Mounting Options and Required Tools
The SEL-735 offers flexible mounting options, including a rectangular panel cutout with four screws. Required tools include a torque screwdriver and 12-24 AWG wire for connections. Mounting screws and accessories are provided for secure installation. Additional brackets and kits are available for specialized setups, ensuring efficient and reliable meter installation in various environments.
Configuration and Settings
The SEL-735 supports advanced configuration options, including voltage/current connections, demand metering, and date/time settings. Use QuickSet for easy setup and HMI monitoring, ensuring precise metering and control.
3.1 Voltage and Current Connections (Form 9, Form 5, Form 36)
The SEL-735 supports Form 9 (4-wire wye), Form 5 (3-wire delta), and Form 36 (4-wire wye) connections. These configurations allow flexible installation in various power systems, ensuring accurate voltage and current measurements. Proper wiring is essential for reliable operation, with detailed guidance provided in the manual for each connection type. This flexibility caters to diverse application requirements, ensuring precise metering across different electrical setups.
3.2 Demand Metering and Interval Settings
The SEL-735 supports Thermal, Rolling, and Block demand types with intervals of 1, 5, 10, 15, 30, and 60 minutes. Demand metering can be configured using the QuickSet software, allowing users to set ratios like CTR (Current Transformer Ratio) and PTR (Potential Transformer Ratio). For example, a 1200:5 CT ratio equates to a CTR setting of 240, ensuring accurate demand calculations for various applications.
3.3 Date and Time Configuration
The SEL-735 internal clock is accurate to 5 seconds per month at room temperature. Users can set the date and time manually or synchronize with an external time source. The meter also supports daylight saving time (DST) settings, which can be enabled or disabled based on regional requirements. Configuration is done via the QuickSet software for precise timekeeping and reliable data logging.
Power Quality Analysis
The SEL-735 is fully compliant with IEC 61000-4-30 Class A, enabling precise harmonic and interharmonic analysis for accurate power quality measurements and anomaly detection.
4.1 Compliance with IEC 61000-4-30 Class A Requirements
The SEL-735 fully meets IEC 61000-4-30 Class A standards, ensuring high-precision power quality measurements. This compliance allows operators to confidently identify and analyze power system anomalies, such as voltage sags and harmonic distortions, with accurate and reliable data, adhering to strict international testing protocols outlined in IEC 62586-2.
4.2 Harmonic and Interharmonic Analysis
The SEL-735 provides advanced harmonic and interharmonic analysis, capturing up to the 50th harmonic. This capability enables detailed monitoring of voltage and current distortions, ensuring compliance with power quality standards. The meter’s accuracy in detecting frequency variations and interharmonics supports precise identification of power system anomalies. Real-time monitoring and reporting tools help users maintain optimal power quality in industrial and utility applications.
Data Collection and Reporting
The SEL-735 supports advanced data collection through Load Profile (LDP) and MV-90 settings, enabling detailed energy usage tracking. It captures and stores waveform data for event analysis, ensuring comprehensive power system monitoring and reporting capabilities.
5.1 Load Profile (LDP) and MV-90 Settings
The SEL-735 supports up to 12 recorders with 16 channels each, capturing load profile data at intervals of 15 minutes or longer. MV-90 settings enable customization of data collection parameters, ensuring flexibility in monitoring energy usage patterns. This feature is essential for utility and industrial applications requiring detailed historical data for billing and analysis purposes.
5.2 Event Reporting and Waveform Capture
The SEL-735 captures and stores detailed waveforms and event data for power quality disturbances, such as voltage sags, swells, and harmonic distortions. This feature enables comprehensive analysis of power system anomalies, aiding in troubleshooting and maintaining grid reliability. Stored waveforms and events can be retrieved via QuickSet software for further investigation and reporting, ensuring accurate diagnostics and actionable insights.
Communication Protocols
The SEL-735 supports Modbus RTU/TCP, DNP3 Level 2, and Ethernet/serial port configurations, enabling seamless integration with SCADA systems for real-time data monitoring and control, ensuring reliable communication across networks.
6.1 Modbus RTU/TCP and DNP3 Level 2 Outstation
The SEL-735 supports Modbus RTU/TCP and DNP3 Level 2 protocols, enabling seamless communication with SCADA systems. Modbus RTU/TCP provides efficient data exchange, while DNP3 ensures secure and reliable monitoring. The meter features default serial port settings for Modbus, with configurable baud rates and addressing. DNP3 Level 2 compliance allows advanced data reporting and control, ensuring accurate and efficient communication for power monitoring and control applications.
6.2 Ethernet and Serial Port Configuration
The SEL-735 offers flexible communication options with Ethernet and serial ports. Ethernet supports LAN/WAN connectivity via RJ-45, enabling remote access and data transfer. The serial port facilitates RS-232/RS-485 connections for local communication. Configuration is managed through QuickSet software, allowing users to set baud rates, parity, and protocol parameters. This ensures reliable data exchange and integration with various monitoring and control systems.
Security and Access Control
The SEL-735 features four access levels with default passwords to prevent unauthorized access. It supports password protection and security protocols to ensure data integrity and system safety.
7.1 Password Protection and Access Levels
The SEL-735 offers four access levels: ACC, EAC, 2AC, and Engineering. Default passwords are assigned to each level, with higher levels requiring entry of lower-level passwords for added security. This ensures that only authorized users can modify settings or access sensitive data, protecting the meter from unauthorized changes and maintaining system integrity.
7.2 Changing Passwords and Security Best Practices
The SEL-735 requires changing default passwords to ensure security. Use the QuickSet software to update passwords via the configuration menu. Choose strong, unique passwords and update them regularly. Enable access level restrictions and follow organizational security policies. Regularly review user access and update firmware to maintain system protection and compliance with IEC standards, ensuring robust security for your power quality and revenue metering applications.
Troubleshooting and Maintenance
Regularly update firmware and use diagnostic tools to identify and resolve common issues. Check error messages and ensure proper connections. Refer to the manual for detailed troubleshooting guides and maintenance schedules to optimize performance and accuracy in power quality and revenue metering applications.
8.1 Common Issues and Solutions
Common issues with the SEL-735 include incorrect CT polarity, communication errors, and firmware glitches. Solutions involve verifying CT connections, checking settings in QuickSet, and updating firmware. Ensure proper installation and configuration to avoid measurement inaccuracies. Refer to the manual for detailed troubleshooting steps and maintenance tips to resolve issues efficiently and maintain optimal performance.
8.2 Firmware Updates and Diagnostic Tools
The SEL-735 supports firmware updates via QuickSet software, ensuring enhanced functionality and bug fixes. Use the QuickSet tool to download and install the latest firmware from the official SEL website. Diagnostic tools include error logging, self-test functions, and real-time monitoring, allowing users to identify and resolve issues promptly. Regular updates and diagnostics ensure optimal meter performance and accuracy in power quality analysis and revenue metering applications.
Accessories and Support
The SEL-735 offers a range of accessories, including a Quick-Start Guide, Instruction Manual, and Metering Accessories Flyer. Customer support is available via phone or email for additional support.
9.1 SEL-735 Metering Accessories Flyer
The SEL-735 Metering Accessories Flyer provides detailed information on available accessories, including mounting hardware, communication cables, and other tools. It also outlines options for custom configurations to suit specific applications, ensuring seamless integration and optimal functionality of the SEL-735 meter. The flyer is accessible via the SEL website, offering a comprehensive guide to enhancing meter performance and adaptability.
9.2 Customer Support and Resources
Schweitzer Engineering Laboratories offers comprehensive customer support for the SEL-735, including a dedicated support line and email for technical assistance. Additional resources such as the QuickSet software, instructional manuals, and the Metering Accessories Flyer are available on the SEL website, ensuring users have access to tools and information to optimize their metering experience and resolve any issues efficiently.
Compliance and Certifications
The SEL-735 meets strict ANSI and IEC standards for accuracy and reliability, ensuring compliance with power quality and revenue metering requirements. It also holds safety and environmental certifications.
10.1 ANSI and IEC Compliance Details
The SEL-735 is fully compliant with ANSI and IEC standards, including IEC 61000-4-30 Class A for power quality measurements. It ensures high accuracy with a 0.06% watt-hour measurement guarantee and supports Form 9, Form 5, and Form 36 connections. The meter is tested according to IEC 62586-2, guaranteeing precise and reliable performance for revenue metering and power quality analysis.
10.2 Safety and Environmental Certifications
The SEL-735 meets rigorous safety standards, including UL and CSA certifications for North America and IEC certifications for international use. It complies with environmental regulations such as RoHS, ensuring hazardous substance-free construction. The meter is designed for efficient energy use and durability, adhering to global environmental and safety norms while maintaining high performance and reliability in various applications.
Advanced Features
The SEL-735 offers advanced features like synchrophasor measurements for real-time system monitoring and four-quadrant metering for bidirectional energy tracking, enhancing its versatility in power system applications.
11.1 Synchrophasor Measurements
The SEL-735 supports synchrophasor measurements, enabling real-time monitoring of electrical quantities across the power system. This feature allows users to collect precise voltage and current phasors, facilitating advanced grid stability and synchronization. With high accuracy and low latency, synchrophasors enhance power quality analysis and provide critical data for system-wide monitoring and control, making it an essential tool for modern power systems.
11.2 Four-Quadrant Metering and Bidirectional Measurements
The SEL-735 offers advanced four-quadrant metering, enabling precise measurement of power and energy in each quadrant. This capability supports bidirectional measurements, ideal for systems with distributed generation or renewable energy sources. The meter accurately tracks power flow in both directions, ensuring comprehensive monitoring and billing for complex electrical systems, making it a versatile solution for modern power management needs.
The SEL-735 is a powerful tool for power quality and revenue metering, offering compliance with IEC standards, high accuracy, and reliability for diverse applications.
12.1 Summary of Key Capabilities
The SEL-735 excels in power quality analysis, offering Class A compliance with IEC 61000-4-30 standards. It provides high-accuracy revenue metering with support for Form 9, Form 5, and Form 36 connections. The meter enables advanced data collection, including load profiling and event reporting. It supports multiple communication protocols like Modbus and DNP3, ensuring seamless integration. Enhanced security features like password protection and four access levels ensure system integrity and user convenience.
12.2 Final Thoughts on the SEL-735 Meter
The SEL-735 stands out as a comprehensive solution for power quality and revenue metering. Its advanced features, including Class A compliance and four-quadrant metering, make it highly versatile; With robust security, flexible communication options, and accurate measurements, the SEL-735 is an essential tool for modern power systems, ensuring reliability and efficiency across various applications.