cbct tm circuit breaker coil tester user`s manual
Contents
1. Timer Start mode selection switch Timer Stop mode selection switch Timer Start inputs Timer Stop inputs Fault indicator LED is lit when one of the following conditions occurs e Coil current exceeds 80A e Output voltage regulation exceeds 2 at full load e Coil energization duration is longer than 500ms Reset fault mode Enable Pulse output voltage Press this switch to output DC voltage at the Pulse voltage terminals for 1 second REV1 CBCT USERS MANUAL 2 0 OPERATING PROCEDURES 2 1 CBCT Cable Connections Typical CBCT DC control connection diagrams are shown below Figure 2 illustrates the CBCT Constant Output connection to the circuit breaker control circuit Figure 3 and Figure 4 illustrate the CBCT Pulse Output connection to the circuit breaker Trip and Close coil A Always connect the CBCT ground stud to the sub station ground WARNING 52a 52b TIME START Figure 2 CBCT Constant Output to CB Control Circuits es j5 EINEI CBCT USERS MANUAL REV1 TIME START Figure 3 Direct Connection from CBCT Pulse Output to CB Trip Coil Figure 4 Direct Connection from CBCT Pulse Output to CB Close Coil NINA REV1 CBCT USERS MANUAL 2 2 Setting the Output Voltage Follow the steps below to set the output voltage a Turnon the unit and start from the MAIN MENU MAIN MENU lt RUN TEST gt Press the CONTROL KNOB to start the test b The following screen will be dis2. describes the function of each item on the control panel The purpose of the controls and indicators may seem obvious but users should become familiar with them before using the CBCT Accidental misuse of the controls will usually cause no serious harm Users should also be familiar with the safety summary found on the front page of this User s Manual J i TIME STAR 11 10 4 a Di a M 9o SE Figure 1 CBCT Controls and Indicators CBCT USERS MANUAL REV1 Item Number AN Vi 11 12 13 14 15 16 Table 2 Functional Descriptions of CBCT Controls and Indicators Panel Markings OUTPUT ENABLE CHANGE PUSH TO SELECT INPUT POWER 24 240 VDC GROUND RS 232C RESET PULSE Functional Description Pulse output voltage Constant output has to be on first Press PULSE switch to output voltage Output voltage is turned on for 1 second LED indicator is lit when output is on Use this key to turn on the constant output voltage Constant output voltage Use OUTPUT ENABLE key to turn on or off Output is enabled when LED is lit Control knob Turn to change press to select DC voltage input 20 240 VDC Fuse holder Use 200 Vdc 25A Littlefuse P N KLKR25 Ground stud Ground this terminal to sub station ground RS 232C PC interface for firmware upgrade and diagnostics Back lit LCD screen 20 characters by 4 lines viewable in bright light and low light conditions
3. ION VOLT METER RANGE TIMER DISPLAY RANGE TIMER START INPUT TIMER STOP INPUT DISPLAY SAFETY ENVIRONMENT CABLES OPTIONS WARRANTY Programmable DC Power Supply 19 W x H x 15 D 48 cm x 17 cm x 38 cm Weight 25 lbs 11 3 kg 20 300 Vdc 20A fuse 5 95 of input voltage with 2 regulation at max current up to 80A One continuous and one pulse DC output Shutdown if current exceeds 80A or if current drawing time exceeds 500 ms 80A Input output meters 0 300 Vdc Accuracy 1 of reading 0 2V 0 0000 999 999 seconds Accuracy 0 1 ms 1 digit Internal coil initiation wet contact input 10 c 240 Vac dc or dry contact input 1 200 ohms Wet contact 10 240 Vac dc or dry contact 1 200 ohms Back lit LCD screen 20 characters by 4 lines viewable in both bright sunlight and low light levels Designed to meet UL 6101A 1 and CAN CSA C22 2 No 1010 1 92 standards Operating 10 C to 50 C 15 F to 122 F Storage 30 C to70 C 22 F to 158 F Three 6 foot 10 AWG DC cable sets Two 10 foot timer cable sets One ground cable one cable bag Transportation case One year on parts and labor REV1 CBCT USERS MANUAL 1 3 CBCT Controls and Indicators The CBCT s controls and indicators are shown in Figure 1 below A leader line with an index number points to each control and indicator which is cross referenced to a functional description in Table 2 The table
4. TM CBCT CIRCUIT BREAKER COIL TESTER USER S MANUAL INPUT POWER 24 240 VDC TIME START A Vanguard Instruments Company Inc WS 1520S Hellman Ave e Ontario California 91761 USA TEL 909 923 9390 August 2010 FAX 909 923 9391 Revision 1 CBCT USERS MANUAL REV 1 SAFETY SUMMARY FOLLOW EXACT OPERATING PROCEDURES Any deviation from the procedures described in this User s Manual may create one or more safety hazards may damage the CBCT or cause errors in the test results Vanguard Instruments Company Inc assumes no liability for unsafe or improper use of the CBCT All safety precautions provided in this manual must be observed during all phases of testing including test preparation test lead connection actual testing and test lead disconnection SAFETY WARNING AND CAUTIONS The CBCT shall be used only by trained operators All devices under test shall be off line and fully isolated DO NOT MODIFY TEST EQUIPMENT To avoid the risk of introducing additional or unknown hazards do not install substitute parts or perform any unauthorized modification to any CBCT test unit To ensure that all designed safety features are maintained it is highly recommended that repairs be performed only by Vanguard Instruments Company factory personnel or by an authorized repair service provider Unauthorized modifications can cause safety hazards and will void the manufacturer s warranty WARNING Do not remove t
5. est leads during a test Failure to heed this warning can result in lethal electrical shock to personnel and damage to the equipment REV1 CBCT USERS MANUAL TABLE OF CONTENTS CONVENTIONS USED IN THIS DOCUMENT cscccccessecceceesecceceeeescceeeeeecceseeeeeceseeeseeesseegeeesseees 1 O INIROPUCGIION la 2 1 1 General Description and FEatUres saernzzii rr 2 t2 Technical SPECITCALO Srna a 3 13 OBET Controls and Indicators seseriai ANSEES 4 20 OPERATINGPROCEDURES ropne n ne 6 2 1 CBCT CADIS CONANECHONS EE EEE 6 2 2 Setting the Output Voltage i a alinoos t s vn asto SDK nba k n 8 2 3 BOrIMeSRRNI lea r 9 2 4 CBcI Timer Stop lAPU U sraosi nsirks su sro k ovo ro r osnova 10 2 5 A BCT TME DISP Lanna 10 LIST OF FIGURES FIGURE de CBCT Controli and Indicat Or ini 4 Figure 2 CBCT Constant Output to CB Control CIFCU ItS i 6 Figure 3 Direct Connection from CBCT Pulse Output to CB Trip Coll eeecceeeeeeeeeeeeeeeeens 7 Figure 4 Direct Connection from CBCT Pulse Output to CB Close Coll 7 Figure 5 Typical CBCT Timer Come Wolbar tc a N EEA 9 LIST OF TABLES Table 1 CBCT Technical Special silon s r a 3 Table 2 Functional Descriptions of CBCT Controls and IndicatorS eesssseessesreserreesrrrerrrserrrssreee 5 CBCT USERS MANUAL REV1 CONVENTIONS USED IN THIS DOCUMENT This document uses the following conventions e Akey switch or knob on the CBCT
6. ge to the Pulse output terminals and start the timer Dry Contact Mode In this mode the timer will look for a change in the Start input terminals after the PULSE switch is pressed The CBCT will output a DC voltage to the Start input terminals to detect the dry contact status Wet Contact Mode In this mode the timer will look for a change in the Start input terminals after the PULSE switch is pressed In this mode the input will look for a change in voltage or no voltage condition to start the timer A voltage from 24 Vdc to 300 Vdc is considered as Voltage Present tid O im na zi w TIME START Figure 5 Typical CBCT Timer Connection Internal Start Dry Contact Stop REV1 CBCT USERS MANUAL 2 4 CBCT Timer Stop Input Timer Start Input mode can be selected only when the Main Menu is being displayed Select the Timer Stop Input mode by pressing the ARROW key The LED will be lit next to the label for the currently selected mode The CBCT timer can be stopped in two selectable modes described below e Dry Contact Mode In this mode the timer will look for a change in the Stop Input terminals to stop the timer The CBCT will output a DC voltage to the Stop Input terminals to detect the dry contact status e Wet Contact Mode In this mode the timer will look for a change in the Stop Input terminals to stop the timer Under the wet contact mode the input is looking for a change
7. in voltage or no voltage condition to stop the timer A voltage from 24 Vdc to 300 Vdc is considered as Voltage Present 2 5 CBCT Timer Display The CBCT displays the timer result in milliseconds and seconds on the LCD Typical timer test results are shown below INPUT VTG 48 5 OUTPUT VTG 33 7 TIME 117 3m3 status READYX Vanguard Instruments Company Inc 1520 S Hellman Ave e Ontario CA 91761 e USA Phone 909 923 9390 e Fax 909 923 9391 www vanguard instruments com Copyright 2009 by Vanguard Instruments Company Inc CBCT User s Manual e Revision 1 0 e August 18 2010 e TA
8. is better than 2 under load Two DC outputs are available on the CBCT The continuous DC output is capable of sourcing current up to 40 amperes The pulse DC output is capable of sourcing up to 80 amperes for up to 500 milli seconds Both outputs are protected against short circuit conditions if the test current exceeds 80 amperes or if the drawing duration is more than 500 milli seconds CBCT Status Display The CBCT features a back lit LCD screen 20 characters by 4 lines that is viewable in both bright sunlight and low light levels The input and output voltages are displayed on the screen during testing If a power supply fault condition occurs a red FAULT LED light is illuminated on the front panel and a corresponding message is displayed on the LCD screen CBCT Timer The built in single channel timer can be used to verify circuit breaker timing parameters or for any timing application The timing range is from 0 000 to 999 000 seconds with an accuracy of 0 1 milli seconds The timing results are displayed in both milli seconds and cycles The timer can be started by circuit breaker coil initiation or can be triggered by the dry or wet contact input The timer can be stopped by either the dry or wet contact input CBCT USERS MANUAL REV 1 1 2 Technical Specifications Table 1 CBCT Technical Specifications TYPE PHYSICAL SPECIFICATIONS INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT VOLTAGE CHANNELS OUTPUT VOLTAGE PROTECT
9. is indicated as KEY SWITCH and KNOB e Menu names are referenced as MENU NAME e CBCT LCD screen output is shown as REV1 CBCT USERS MANUAL 1 0 INTRODUCTION 1 1 General Description and Features The Vanguard Circuit Breaker Coil Tester CBCT is a variable voltage DC power supply designed specifically to test substation circuit breaker Open and Close coils The CBCT uses the substation s DC power supply to electronically generate a programmable output voltage from 5 to 95 of the source voltage The CBCT can maintain up to an 80A test current while maintaining 2 or better voltage regulation during the circuit breaker coil operation The CBCT provides a safe and convenient method for testing minimum operating voltages of Open and Close coils The CBCT provides one pulse and one continuous DC output The unit s built in short circuit protection feature protects the coil under test if the current exceeds 80 amperes or if the current drawing duration is more than 500 milli seconds A general purpose single channel timer is also available for checking circuit breaker operating time or for any other timing application Input Voltage The CBCT s input voltage range is from 20 to 300 Vdc The input circuit is also protected from a reversed polarity connection Output Voltage The output voltage is programmable from 5 to 95 of the input voltage and is set using the dial on the front panel Output voltage regulation
10. played INPUT VTG 124 0 OUTPUT VTG 0 0 TIME O OmS Status READYX The input DC voltage is displayed as INPUT VTG xxx 0 In the above example the input voltage is 124 0 The output voltage is 0 0 since it is not enabled Press the OUTPUT ENABLE switch c The output voltage will be displayed on the LCD as shown below INPUT VTG 1cH4 U0 OUTPUT VTG 46 4 TIME O OmS Status XREADYX Output voltage is automatically set for 70 of the input voltage The constant output voltage indicator will be lit Turn the CONTROL KNOB to adjust the output voltage If the Constant output connection is being used the circuit breaker control circuit voltage is powered with the voltage displayed on the CBCT screen The circuit breaker is now ready to be operated by the control switches If the Pulse output connection is being used press the PULSE switch to output voltage to the coil CBCT USERS MANUAL REV1 2 3 CBCT Timer Start Input Timer Start Input mode can be selected only when the Main Menu is being displayed Select the Timer Start input mode by pressing the Arrow key The LED will be lit next to the label for the currently selected mode The CBCT timer can be started in three selectable modes internal wet input and dry input Each mode is described below I Internal Mode In this mode the timer will start when the PULSE switch is pressed The CBCT will output the preset volta
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