Summary of Contents for Schweitzer Engineering Laboratories SEL-734W
- Page 1 SEL-734W and SEL Wireless Current Sensor Instruction Manual SEL-734W and SEL-WCS Capacitor Bank Control and SEL Wireless Current Sensors Field Reference Guide 20191029 *PM734W-01*...
- Page 2 SEL products appearing in this document may be covered by U.S. and Foreign patents. Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copyright and patent laws in its products, including without limitation software, firmware, and documentation.
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Page 3: Table Of Contents
Front-Panel Operations ............................4.3 Power System Quantity Measurements ........................4.5 Section 5: SEL-WCS Overview................................5.1 Current Measurements ............................5.1 Section 6: Differences Between the SEL-734B and the SEL-734W Overview................................6.1 Capacitor Bank Control Strategies........................6.1 Metering................................6.2 Power Quality and Event Analysis ........................6.2 Section 7: Testing and Troubleshooting Appendix A: Field Reference Guide Versions Field Reference Guide ............................A.1... - Page 4 This page intentionally left blank...
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Page 5: List Of Tables
SEL-WCS Typical Update Period Versus Line Current .............5.1 Table 5.2 Frequency Channels ........................5.2 Table 5.3 Phase Identification Configuration ....................5.3 Table 6.1 SEL-734W and SEL-734B Control Strategy Comparison ............6.1 Table 7.1 Troubleshooting and Common Problems ..................7.1 Table A.1 Field Reference Guide Revision History..................A.1 Date Code 20191029... - Page 6 This page intentionally left blank...
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Page 7: List Of Figures
List of Figures SEL-734W and SEL Wireless Current Sensor Instruction Manual Figure 1.1 SEL-734W and SEL-WCS Capacitor Bank Control System ............1.1 Figure 1.2 System Overview.........................1.2 Figure 1.3 SEL-WCS Key Components .......................1.3 Figure 1.4 SEL-734W Front Panel Overview....................1.4 Figure 2.1 4-Jaw Socket-Based Enclosure Dimensions................2.1 Figure 2.2... - Page 8 This page intentionally left blank...
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Page 9: Preface
SEL design templates. The SEL-734W Field Reference Guide provides a general overview of the SEL-734W and describes the procedures for installation as a capacitor bank con- trol. This guide also provides troubleshooting and testing methods. - Page 10 Contact with instrument terminals can cause electrical shock that can Tout contact avec les bornes de l’appareil peut causer un choc électrique result in injury or death. pouvant entraîner des blessures ou la mort. SEL-734W and SEL Wireless Current Sensor Field Reference Guide Date Code 20191029...
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Page 11: General Information
à actionner l'équipement. CAUTION ATTENTION Connect only 120 Vac nominal to the SEL-734W socket stab VOLTAGES con- Connecter seulement 120 Vca nominal au connecteur de prise VOLTAGES nector. (Tensions) du SEL-734W CAUTION... -
Page 12: Technical Support
We appreciate your interest in SEL products and services. If you have questions or comments, please contact us at: Schweitzer Engineering Laboratories, Inc. 2350 NE Hopkins Court Pullman, WA 99163-5603 U.S.A. Tel: +1.509.338.3838 Fax: +1.509.332.7990 Internet: selinc.com/support Email: info@selinc.com SEL-734W and SEL Wireless Current Sensor Field Reference Guide Date Code 20191029... -
Page 13: Section 1: Introduction And Specifications
The SEL-WCS wakes up periodically, measures current (rms), computes harmonic content up to the 15th harmonic, and transmits the data to the SEL-734W. Date Code 20191029 Field Reference Guide... -
Page 14: System Features And Benefits
Introduction and Specifications System Features and Benefits The SEL-734W processes data from one or three SEL-WCS devices and from the CPT to implement a variety of cap bank control strategies. The SEL-734W uses current measured independently from three SEL-WCS devices and one measured voltage to provide three-phase switching decisions and monitoring. -
Page 15: Product Overview
Figure 1.3 depicts the key components of the SEL-WCS. Each SEL-WCS mounts onto and monitors the line current on one phase. The SEL-WCS periodi- cally sends the load data information, including the harmonics, to an SEL-734W. Spring for Secure Installation... -
Page 16: Sel-734W Overview
The function of front-panel LEDs and pushbuttons are factory-programmed. Blank labels shipped with the device can be used to indicate new functionality. Figure 1.4 depicts the front panel of the SEL-734W with default labels installed on the standalone device. Figure 1.4 SEL-734W Front Panel Overview ENABLED LED This LED shows the diagnostics status of the SEL-734W. - Page 17 View event data Model, Options, and Accessories Models The SEL-734W is the model number for the wireless capacitor bank control. You can select options for a 15 V accessory power supply as well as options for one or three SEL-WCS devices.
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Page 18: Sel-Wcs Specifications
; 150 kHz to 80 MHz 80% 1 kHz sine wave modulation Power Frequency Magnetic IEC 61000-4-8:2009 100 A/m; 50/60 Hz; 60 s Field: 1000 A/m; 50/60 Hz; 1–3 s 1000 Amperes rms SEL-734W and SEL Wireless Current Sensor Field Reference Guide Date Code 20191029... -
Page 19: Sel-734W Specifications
–85 dBm Maximum Operating Voltage: 240 V 15 Vdc Integrated Power Supply Rated Insulation Voltage: 300 V Continuous Operating Limits Rated Input Voltage: 110–240 Vac (50/60 Hz) 110–250 Vdc Date Code 20191029 Field Reference Guide SEL-734W and SEL Wireless Current Sensor... - Page 20 Dry Heat: IEC 60068-2-2:2007 15 W of Accessories: –40° to +60°C (–40° to +140°F) Envir., Part 2: Test Bd SEL-734W device, Severity: 16 hours at 40 W of Accessories: –40° to +50°C (–40° to +122°F) +85°C Without Direct Sunlight: Increase max. temperatures by 15°C (27°F) Device in Cabinet, Severity: 16 hours at +70°C...
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Page 21: Section 2: Installation
Instruction Manual S E C T I O N Installation Overview This section describes the dimensions of the SEL-734W, its enclosure, the SEL-WCS, and steps to install the SEL-734W and SEL-WCS devices. Dimensions Figure 2.1 4-Jaw Socket-Based Enclosure Dimensions Date Code 20191029... -
Page 22: Installations
Figure 2.2 SEL-WCS Dimensions Installations SEL-734W Connections to Compact Enclosures Figure 2.3 shows the rear of the socket-based enclosures. Table 2.1 shows the pinout of the socket stabs. SEL-734W and SEL Wireless Current Sensor Field Reference Guide Date Code 20191029... -
Page 23: Table 2.1 Socket Stab Configurations
Grounding the Enclosure SEL recommends that the control power transformer serving the SEL-734W be on the same pole as the SEL-734W, as shown in Figure 2.4. All connections to WARNING the SEL-734W (e.g., ac supply from power transformer) must be routed in close Always follow local utility grounding practices. -
Page 24: Figure 2.4 Sel-734W Required System Grounding
In cabinets with a ground lug, the ground lug is bonded to the chassis ground of provides the correct ground-to- the SEL-734W and all metal parts in the cabinet. The ground lug is not bonded to neutral connection, or separation, as system neutral (see note). - Page 25 Determine the current direction of normal power flow, and install the sensor upstream of the capacitor bank with the arrow pointed downstream towards the capacitor bank. Date Code 20191029 Field Reference Guide SEL-734W and SEL Wireless Current Sensor...
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Page 26: Getting Started
An SEL-734W ordered in an enclosure comes with a pre-installed design tem- plate. The template is also available on the SEL website. For more information, see the SEL-734W Template Reference Guide, and Section 3: PC Software of the SEL-734 Instruction Manual. - Page 27 Enter the ACC command. b. When prompted, enter the ACC password. The default password is OTTER. Step 4. Enter the MET command. The SEL-734W will report the instanta- neous voltage, current, and power. Using QuickSet HMI Step 1. Open the QuickSet HMI.
- Page 28 Installation Getting Started Step 4. Select the Update SER button. QuickSet will poll the data from the SEL-734W and show the data in the window. QuickSet reports the element name in the SER report. Refer to the appropriate OGIC design template guide to determine the function of the SEL...
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Page 29: Section 3: Applications
Applications Single-Phase Measurement and Ganged Switching Figure 3.1 shows a single-measurement and ganged switching application. The SEL-734W uses one measured voltage, such as from a CPT, and one SEL-WCS to make switching decisions and provide power system monitoring. Capacitor Bank... - Page 30 This page intentionally left blank...
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Page 31: Section 4: Sel-734W
S E C T I O N SEL-734W Overview The SEL-734W is a capacitor bank controller that controls the operation of capacitor bank switches on three-phase power systems. The SEL-734W comes with a pre-installed template that supports the following automatic control strategies: ➤... -
Page 32: Figure 4.1 Sel-734W
Settings Figure 4.1 shows an SEL-734W. The orange rectangle in the figure indicates the switches where you make the different settings from those on the SEL-734B. Figure 4.1 SEL-734W... -
Page 33: Front-Panel Operations
The Voltage Phases setting is used to allow the SEL-734W to calculate power, VAs, and VARs for all three phases when the SEL-734W is only sensing a single- phase voltage. This is done by reusing the magnitude of the measured voltage phase, but rotating by ±120 degrees to get the two missing voltage phases. -
Page 34: Table 4.1 Front-Panel Led Descriptions
Illuminates when the AVAR processing is active. Refer to SEL-734W Template Reference Guide for further details. ➤ Illuminates when the SEL-734W has not received an update from the SEL-WCS for 5 minutes. ➤ Extinguishes when the SEL-734W starts receiving a current update from the SEL-WCS. -
Page 35: Power System Quantity Measurements
The SEL-WCS transmits current magnitude intermittently. The SEL-734W inter- prets that data and creates a waveform that is recognized by the SEL-734W as an analog signal. This means that all of your metered currents are reported as a per- fect sin wave based on the last received rms value from the SEL-WCS. - Page 36 This page intentionally left blank...
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Page 37: Section 5: Sel-Wcs
SEL-734W before starting the measurement process. The SEL-734W provides a measure- ment range of 5 to 1000 A. The SEL-WCS is paired to an SEL-734W by settings selections made on both devices. -
Page 38: Table 5.2 Frequency Channels
Figure 5.1 Control (DIP) Switch Configurations Harmonic Content Control (DIP) Switch Setting Control (DIP) switch SW7 configures the SEL-WCS, whether it calculates and sends harmonic contents of the current to the SEL-734W. SEL-734W and SEL Wireless Current Sensor Field Reference Guide... -
Page 39: Table 5.3 Phase Identification Configuration
The SEL-WCS uses two control (DIP) switches (SW5 and SW6) to configure the phase information. Table 5.3 shows the phase identification settings. Table 5.3 Phase Identification Configuration Switch Settings (SW5, SW6) Phase Reserved Date Code 20191029 Field Reference Guide SEL-734W and SEL Wireless Current Sensor... - Page 40 This page intentionally left blank...
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Page 41: Section 6: Differences Between The Sel-734B And The Sel-734W
(amplitude and spectral content). The SEL-734W receives the information and repeatedly uses it until a new update is received. The SEL-734W supports all the same functions of the SEL-734B, such as metering, power quality and event analysis, waveform capture, Sequence of Events (SOE) reporting, and capacitor bank control operation. -
Page 42: Metering
Because of the metering data differences between the SEL-734B and SEL-734W, the power quality given by them are different. SEL does not recommend that the SEL-734W be used as a revenue meter or a device that you expect to capture quick changes or transients. -
Page 43: Section 7: Testing And Troubleshooting
Check that 120 Vac is present. Refer to the enclosure wiring and check that 120 Vac voltage is pres- ent between the control power fuse and neutral. ➢ Check the front panel. Refer to the appropriate design template guide to check the SEL-734W indi- cators of control power. ➤... - Page 44 This page intentionally left blank...
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Page 45: Appendix A: Field Reference Guide Versions
SEL-734W and SEL Wireless Current Sensor Instruction Manual A P P E N D I X Field Reference Guide Versions Field Reference Guide The date code at the bottom of each page of this field reference guide reflects the creation or revision date. - Page 46 This page intentionally left blank...
- Page 48 SCHWEITZER ENGINEERING LABORATORIES, INC. 2350 NE Hopkins Court • Pullman, WA 99163-5603 USA Phone: +1.509.332.1890 • Fax: +1.509.332.7990 www.selinc.com • info@selinc.com...
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