SEL-734B Data Sheet Advanced Monitoring and Control System Compact Enclosure Full-Size Enclosure Major Features and Benefits The SEL-734B combines volt/VAR based capacitor bank control with power quality monitoring and advanced reporting through Ethernet and multiple serial ports. The standard SEL-734B includes low-energy analog (LEA) inputs for voltage and current sensing. ➤ One Controller, Many Applications. The SEL-734B adapts to multiple applications ranging from basic three-pole control to intelligent single-pole control. Configurable logic and integrated communications ensure that the SEL-734B supports future system demands. ➤ Preconfigured Control Strategies. SEL offers a selection of ACSELERATOR QuickSet® SEL-5030 Software templates that support control strategies from basic voltage-based control to advanced singlepole kVAR control with voltage override. ➤ Plug-and-Play Configurations. SEL offers full-size and compact enclosures which install in many types of sites. Rugged military-grade cables allow direct connections from the SEL-734B controller to line-post sensors and capacitor switches. ➤ Advanced Power Quality Monitoring and Trending. All SEL-734B models include harmonic measurements, load profile trending, voltage sag/swell/interruption (VSSI) recording, and waveform capture. The Advanced Power Quality and Monitoring option measures harmonics to the 50th order, captures waveforms at 8 kHz, and offers 192 channels of profile trending. ➤ SEL DNA™ (Distribution Network Automation) Ready. Capacitor controls are integral to systemwide volt/VAR control schemes. The SEL-734B integrates seamlessly into system-wide distribution control schemes to linearize voltage profiles and minimize VAR-induced I2R losses. Schweitzer Engineering Laboratories, Inc.

SEL-734B Compact Enclosure Applications The compact enclosure provides single-phase monitoring and three-pole control in a small 12" x 10" outdoor fiberglass enclosure. The socket-based enclosure is available in two different 6-jaw form factors and one 4-jaw form factor. The Connectorized® enclosure has a 7-pin circular connector on the bottom for a control and measurement cable connection to a junction box. Control Strategies The compact enclosure supports the following capacitor bank control strategies: ➤ Voltage ➤ kVAR* ➤ Power Factor* ➤ Current* ➤ Time of Day SCADA, Auto, and Manual control...

Figure 2 Compact Enclosure Rear Plug and Meter Socket Table 1 Socket Stab Configurationsa Socket Stab Number and Function

SEL-734B Full-Size Enclosure Applications The full-size enclosure allows three-phase monitoring and ganged three-phase or individual phase control. Two enclosure styles offer flexibility: a combined sensor connector option and an individual sensor connector option. The combined sensor connector is intended for threephase monitoring. Individual sensor connectors provide the option of single-phase monitoring or three-phase monitoring. Control Strategies SCADA, Auto, and Manual control modes Front-panel control and indicators Hunting prevention DC backup UPS Sensor phase and magnitude correction...

Interface Options The following field interfaces are available in the full-size enclosure: > Combined sensor connector > Individual sensor connectors Combined Sensor Connector The enclosure contains one 14-pin connector for all sensors and one 19-pin connector for three control switches. The 14-pin connector connects to three primary current/voltage sensors and one neutral current sensor. The 19-pin connector connects to three capacitor bank switches. Table 3 14-Pin Sensor Connector Assignment Pin Number Description Keyed Connectors Reserved Reserved Neutral Sensor, Positive Polarity Neutral...

Individual Sensor Connectors Three 4-pin connectors, located on the bottom of the enclosure, route each measurement signal to the SEL-734B. Operators can choose to use one, two, or all three sensor inputs. Settings allow you to configure the SEL-734B for a different number of sensors. The enclosure contains the following connectors: ► Three 4-pin connectors connect to each primary sensor ► One 4-pin connector connects to a neutral current sensor and a 120 Vac control power transformer (CPT) ► One 19-pin connector connects to three capacitor bank switches Schweitzer Engineering Laboratories, Inc....

Table 8 provides a complete reference about the available options. Table 8 Control Features of Enclosure Models Schweitzer Engineering Laboratories, Inc.

Compliance Designed and manufactured under an ISO 9001 certified quality management system Radiated Emissions: FCC Part 15; Class A SEL-734B Device: UL Listed to U.S. and Canadian safety standards (File E212775, File E220228; NRAQ, NRAQ7, File E475839; NRAG, NRAG7, File E470448) Instantaneous Metering/Monitoring Instantaneous (25 ms): Accuracies are specified at 23°C and at nominal system frequency unless noted otherwise. Frequency: ±0.01 Hz 15 Vdc Integrated Power Supply Continuous Operating Limits Rated Input Voltage: Input Voltage Range: Input Current: Output Voltage: Output Current:...

Rated Insulation Voltage: 300 V Type TestsElectromagnetic Compatibility Immunity Surge Withstand Capability: (-4° to +158°F) Device in Compact Enclosure With Integrated 15 Vdc Power Supply 0 W of Accessories: -40° to +65°C (^0° to +149°F) Without Direct Sunlight: Increase max. temperatures by 15°C (27°F) Device in Full-Size Enclosure 0 W of Accessories: -40° to +70°C (^0° to +158°F) With UPS (Supercapacitor): Decrease max. temperatures by 10°C (18°F) Without Direct Sunlight: Increase max. temperatures by 15°C (27°F) Operating Environment Pollution Degree: 2 (SEL-734B Device) Surge...

Safety Dielectric Strength/Impulse: IEEE C62.41:2002 Location Category B (6 kV) on LEA voltage measurement inputs and power supply inputs IEC 61000-4-5:2005 Level 2 (1 kV) on LEA current measurement inputs and auxiliary circuits IEC 60060-1 4 kV on power supply, ac current inputs, and voltage inputs Elec. relays, Part 5: Insulation, Section 6: 2.5 kVac on ac current inputs, contact inputs, and contact outputs 3.1 kVdc on power supply 2.2 kVdc on EIA-485 port for 60 sec. Severity: 2500 Vac on analog inputs, contact Impulse Voltage Test: inputs, and contact outputs 3100 Vdc on power supply IEC...