S&C Scada-Mate Switching Systems. Specifications for S&C Current Sensors

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Philippa Lane
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1 Thi data heet provide pecification for S&C Current Senor particularly when the Scada-Mate Switch i ued in application where the RTU i upplied by other. S&C Scada-Mate Switche include integral enor for three-phae monitoring of line current and ingle-phae monitoring of ytem voltage. Senor for three-phae voltage ening or for voltage ening on both ide of a normally open witch are optional. All enor are of molded S&C Cypoxy contruction and erve a upport inulator for the witch live part, thereby eliminating the cot, clutter, and complexity aociated with eparately mounted enor. The current enor are aturating-type enor and do not require horting witche. Thee enor have a current ratio of 600:5 and can drive conventional current tranducer. The output of thee current enor at primary current in exce of 1600 ampere i a ditorted waveform that may affect the performance of certain fault detection cheme. See Figure 2 on page 3. The voltage enor portion of the S&C Current/Voltage Senor i a contant-current output device like a current tranformer and, therefore, primary fuing (required by voltage tranformer) i eliminated. Burden are available to provide either 5-volt ac or 69-volt ac output. A voltage limiter i alo provided inide the bae of the Scada-Mate Switch to protect the voltage enor in the event the econdary circuit i inadvertently opened or the burden i removed. For certain application, the voltage enor portion of the S&C Current/Voltage Senor i ued to provide control power input to an S&C Battery Charger and battery pack for operating the Scada-Mate Switch. In thee application, the voltage enor cannot be ued for voltage ening and cannot be ued to power any uer-upplied equipment. Typical amplification factor for voltage enor up to the 17th harmonic are provided in Figure 4 and 5. The current enor repone i eentially flat for all harmonic, therefore, no correction of econdary current harmonic meaurement i required. Superede Data Sheet dated c2003 Page 1 of 5

2 Current Senor Type Saturating iron core air-gapped Operating Temperature Range ºC to +40ºC S&C Current Senor Winding, 600:5 turn ratio conductor Senor econdary terminal Control cable Output in for connection to RTU Specification apply to S&C Current Senor and to the current enor portion of S&C Current/Voltage Senor. Figure 1. Schematic of S&C Current Senor. INPUT RATINGS AND PHYSICAL CHARACTERISTICS Current, Ampere Nominal Saturation Nominal Maximum Voltage, Kv Impule Withtand (BIL) 60-Hz Withtand Leakage Dry Arcing ¹ ₈ 8³ ₈ ⁵ ₈ 12⁷ ₈ ³ ₈ 16⁷ ₈ OUTPUT RATINGS Current, Nominal, Ampere ac Power, Nominal, Va Open Circuit Voltage, V ac At 900 Ampere At 12,500 Ampere Current Ratio, Nominal Angle Shift, Nominal Accuracy, for Primary Current from 60 to 200 Ampere 200 to 900 Ampere Magnitude Angle Magnitude Angle :1 2.0 leading 1.5% % 1.0 Meaured at the econdary terminal of the enor. The combined burden of uer-upplied equipment (tranducer, RTU, etc.) connected to the current enor output terminal on the witch control in the control unit mut be le than 1.0 va. Additional burden will affect the accuracie publihed herein. Open circuit voltage i expreed a the rm value of a ine wave having the ame peak voltage a the open circuited current enor. The accuracie hown are in percent of reading and reflect uer calibration of the current enor output uing the precie magnitude ratio and phae angle hift appropriate for each enor, and are applicable over the operating temperature range lited and under all weather condition. The precie magnitude ratio and phae angle hift for each current enor are written on the yellow card included in the Intallation and Operation Information Kit provided with the witch. The accuracie are 5% for magnitude and 4º for phae angle if the current enor ouput are calibrated uing the nominal magnitude ratio and phae angle hift. To develop overall ytem accuracy, additional tolerance mut be added to reflect uer-upplied equipment. Page 2 of 5

3 Current, Ampere Time, rm 3 Ka rm ymmetrical fault 9 Ka rm ymmetrical fault 16 Ka rm ymmetrical fault Figure 2. Output waveform of aturated current enor (with maximum allowable burden). Page 3 of 5

4 Voltage Senor Type capacitor erieconnected to dry-type tranformer Surge Protection Internal ga-filled park gap Operating Temperature Range ºC to +40ºC Voltage enor portion of S&C Current/Voltage Senor conductor Protective park gap capacitor Tranformer, 13.1:1 turn ratio Senor econdary terminal Voltage limiter in Scada-Mate Switch Control cable Output in for connection to RTU Burden in Specification apply to voltage enor portion of S&C Current/Voltage Senor. INPUT RATINGS AND PHYSICAL CHARACTERISTICS Figure 3. Schematic of voltage enor portion of S&C Current/Voltage Senor. Voltage, Kv Nominal Operating Range Impule Withtand (BIL) 60-Hz Withtand Leakage Dry Arcing to ³ ₈ to ¹ ₂ 12⁷ ₈ to ⁷ ₈ OUTPUT RATINGS Voltage, V ac Voltage Ratio, Nominal Power, -Angle Accuracy Nominal Open Circuit Nominal, Va 14.4 Kv 25 Kv 34.5 Kv Shift, Nominal Magnitude Angle 5 30 to :1 2440:1 3389: leading 1.0% to :1 212:1 276:1 1.0 leading 3.0% 1.0 For lower ytem voltage, conult the nearet S&C Sale Office ohm and 6.5 µf (408 ohm equivalent) burden are available to provide 5-volt ac or 69-volt ac output, repectively. Note: The nominal output lited do not preciely correpond to the nominal input rating. Open circuit voltage i expreed a the rm value of a ine wave having the ame peak voltage a the open circuited voltage enor (with the voltage limiter in place when meaured uing a true RMS voltmeter). Meaured acro the voltage enor burden on the witch control. The combined burden of uer-upplied equipment (tranducer, RTU, etc.) connected to the voltage enor output terminal on the witch control mut be le than va for the 5-volt ac output and 2.5 va for the 69-volt ac output. Additional burden will affect the accuracie publihed herein. The accuracie hown are in percent of reading and reflect uer calibration of the voltage enor output uing the precie magnitude ratio and phae angle hift appropriate for each enor, and are applicable over the operating temperature range lited and under all weather condition. For the precie magnitude ratio and phae angle hift for each voltage enor, refer to the yellow card included in the Intallation and Operation Information Kit provided with the witch. To develop overall ytem accuracy, additional tolerance mut be added to reflect uer-upplied equipment. Page 4 of 5

5 25 20 Amplification Factor Order of Harmonic Figure 4. Amplification factor v. order of harmonic, for 5-volt ac nominal voltage ening output at 25 C. Applicable to S&C Voltage Senor of all rating Amplification Factor kv kv and 34.5 kv 1 Figure 5. Amplification factor v. order of harmonic, for 69-volt ac nominal voltage ening output at 25 C. Applicable to S&C Voltage Senor of all rating hown Order of Harmonic Page 5 of 5

1Introduction CHAPTER ONE IN THIS CHAPTER. APEX Drive Description and Block Diagram. ➀ Introduction 1

1Introduction CHAPTER ONE IN THIS CHAPTER. APEX Drive Description and Block Diagram. ➀ Introduction 1 CHAPTER ONE Introduction IN THIS CHAPTER Introduction APE Drive Decription and Block Diagram ➀ Introduction INTRODUCTION Thi uer guide decribe three product. APE0 Servo Drive 6A peak, 8A continuou; phae