VBT-75 User`s Manual - Vanguard Instruments Company, Inc.
Contents
1. RH 40 C 104 F non condensing 2000m 6562 ft to fully safety specifications One power cord one ground cable one 10 high voltage cable one 10 high voltage return cable Shipping case is included One year on parts and labor VBT 75 USER SMANUAL REV 1 1 3 VBT 75 Controls and Indicators The VBT 75 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 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 VBT 75 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 Figure 1 VBT 75 Controls and Indicators REV1 VBT 75 USER S MANUAL Item Number 10 Table 2 Functional Descriptions of VBT 75 Controls and Indicators Panel Markings Functional Description HIGH VOLTAGE High voltage cable connector RS 232C RS 232C interface port for factory calibration and diagnostics Back lit LCD screen 2 lines x 16 characters Visible in bright sunlight and low light levels 120 240 Vac 2A Input power connector with built in fuse holder and power switch 50 60 Hz F3A250V GROUND VBT ground stud Connect ground stud to subs2. an audible tone and an illuminated HIGH VOLTAGE LED light For additional operator safety an ARM switch must be held down during testing The VBT 75 features a back lit LCD screen 16 characters by 2 lines that is viewable in both bright sunlight and low light levels A turn and press knob is used to control the unit An RS 232C interface port is provided for factory calibration and diagnostic testing The VBT 75 is furnished with a 10 foot test cable that is terminated with a quick disconnect test clip A transportation case is also included REV1 VBT 75 USER S MANUAL 1 2 Technical Specifications Table 1 VBT 75 Technical Specifications TYPE PHYSICAL SPECIFICATIONS INPUT POWER OUTPUT VOLTAGE OUTPUT RIPPLE VOLTAGE DISCHARGE TIME DISPLAY CONTROL COMPUTER INTERFACE ENVIRONMENT HUMIDITY MAX ALTITUDE MAX CABLES SHIPPING CASE WARRANTY Portable 75 kV vacuum bottle tester Dimensions 17 W x 10 5 H x 6 5 D 42 7 cm x 26 9 cm x 16 5 cm Weight 10 Ibs 4 53 Kg 2 amps 90 240 Vac 50 60 Hz 10 kV to 75 kV dc in 5 000 volt steps 3 max Maximum discharge time for internal high voltage is 3 seconds Backlit LCD 2 lines by 16 characters visible in bright sunlight and low light conditions Single turn and press knob selector One RS 232C port for factory calibration and diagnostics Operating 10 to 50 C 15 to 122 F Storage 30 C to 70 C 22 to 158 F 90
3. e Ontario CA 91761 e USA Phone 909 923 9390 e Fax 909 923 9391 www vanguard instruments com Copyright 2015 by Vanguard Instruments Company Inc VBT 75 User s Manual e Revision 1 0 e March 3 2015 e TA
4. VBI 75 VACUUM BOTTLE TESTER USER S MANUAL Vanguard Instruments Company Inc 1520 S Hellman Ave Ontario California 91761 USA TEL 909 923 9390 March 2015 FAX 909 923 9391 Revision 1 VBT 75 USER S MANUAL REV1 SAFETY SUMMARY FOLLOW EXACT OPERATING PROCEDURES Any deviation from the procedures described in this operator s manual may create one or more safety hazards damage the VBT 75 or cause errors in the test results Vanguard Instruments Co Inc assumes no liability for unsafe or improper use of the VBT 75 The following safety precautions must be observed during all phases of test set up test hookups testing and test lead disconnects SAFETY WARNINGS AND CAUTIONS This device shall be used only by trained operators All circuit breakers under test shall be off line and fully isolated SERVICE AND REPAIR e Do not install substitute parts or perform any unauthorized modification to any VBT 75 test unit e Repairs must 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 EQUIPMENT RATINGS IP Rating The enclosure for the VBT 75 has an IP rating of 32 Pollution Degree The VBT 75 has a pollution rating of 2 Operating Voltage The VBT 75 is rated for use with an operating voltage of 120V or 240V auto ranging 10 of selected voltage P
5. ed MAIN lt UTIL gt 14 16 18 Press the CONTROL KNOB The following screen will be displayed UTIL lt SET TIME gt l4 16 22 Press the CONTROL KNOB The following screen will be displayed MM DD YY HH MM Turn the CONTROL KNOB to select the first digit of the month and then press the CONTROL KNOB The cursor will move over to the second digit of the month Continue this process to enter the date and time When you press the CONTROL KNOB for the last time to set the second digit of the current minute the date and time will be set and you will be returned to the START UP menu VBT 75 USER SMANUAL REV 1 3 2 Changing the LCD Screen Contrast Follow the steps below to adjust the VBT 75 s LCD screen contrast a Start from the START UP menu MAIN lt RUN TEST gt 14 16 15 Turn the CONTROL KNOB until the following screen is displayed MAIN lt CONTRAST gt 14 16 15 Press the CONTROL KNOB b The following screen will be displayed CONTRAST ADJUST PRESSE ENI Turn the CONTROL KNOB clock wise or counter clockwise to adjust the screen contrast Press the CONTROL KNOB when the contrast is to your liking You will be returned to the START UP menu REV1 VBT 75 USER S MANUAL 3 3 Performing a Test Follow the steps below to perform a test a Start from the START UP menu MAIN lt RUN TEST gt 14 15 15 Press the CONTROL KNOB b The following scree
6. low LOKV Ssec 300uA gt gt FAIL lt lt The TEST FAIL LED on the front panel will also be illuminated to indicate a test failure Release the ARM SWITCH and press the CONTROL KNOB to return to the START UP menu REV1 VBT 75 USER S MANUAL 3 4 Changing Test Parameters The first time you perform a test after turning on the VBT 75 you will be prompted for the test duration time test voltage and test threshold The VBT 75 will use these settings for performing subsequent tests Follow the steps below to select different test parameters a Start from the START UP menu MAIN lt RUN TEST gt 14 16 15 Turn the CONTROL KNOB until the following screen is displayed MAIN lt SETUP gt 14 16 20 Press the CONTROL KNOB b The following screen will be displayed TIME lt 5 sec gt 18 00 05 Turn the CONTROL KNOB to select the desired test duration and then press the CONTROL KNOB c The following screen will be displayed VLTG lt 10 KV gt 18 00 15 Turn the CONTROL KNOB to select the desired test voltage and then press the CONTROL KNOB d The following screen will be displayed THRES lt 300 uA gt 18 00 20 Turn the CONTROL KNOB to select the flash over threshold and then press the CONTROL KNOBI The test parameters will be updated and any subsequent tests that are performed will use these parameters Vanguard Instruments Company Inc 1520 S Hellman Ave
7. n will be displayed TIME lt 5 sec gt 18 02 05 Turn the CONTROL KNOB to select the desired test duration and then press the CONTROL KNOB c The following screen will be displayed VLTG lt 10 KV gt 14 02 15 Turn the CONTROL KNOB to select the desired test voltage and then press the CONTROL KNOB d The following screen will be displayed THRES lt 300 uA gt 18 02 20 Turn the CONTROL KNOB to select the flash over threshold and then press the CONTROL KNOB e The following confirmation screen will be displayed PRESS IF 0K LOKV Ssec 300uA Press the CONTROL KNOB to confirm the test parameters f The following screen will be displayed PRESS RED SWITCH TO START TEST VBT 75 USER S MANUAL REV 1 Press and hold the red ARM SWITCH g The VBT 75 will initiate the test and start the timer based on the test duration selected The screen will be updated with the test voltage and the leakage current as shown below 9q 9KV 9q 8buA Time 00 03 h After the test time duration has elapsed the test results will be displayed If the leakage current did not pass the preset value set in step d the test voltage is returned to zero and a PASS message is displayed as shown below LOKV 5sec 300uA gt gt PASS lt lt However if a flash over condition occurred such as bottle failure the test voltage is immediately turned off and a FAIL message is displayed as shown be
8. ower Cord The VBT 75 is supplied with a 16 AWG 16A power cord with a NEMA 5 15P plug Replacement cable shall have the same or better rating and is available through the manufacturer VENTILATION REQUIREMENTS The VBT 75 must be operated with the enclosure lid open SAFETY SYMBOLS AN Indicates that caution should be exercised D OR D Indicates location of chassis ground terminal CLEANING To clean the VBT 75 e Disconnect all cables and turn the unit off e Usea soft lint free cloth to wipe all surfaces clean e Avoid getting moisture in openings and connectors e Don t use any cleaning products or compressed air REV1 VBT 75 USER S MANUAL TABLE OF CONTENTS CONVENTIONS USED IN THIS DOCUMENT rr iene eee eee 1 LO INTRODUCTION i E i n 2 1 1 General Description and Features ssesssssssseserresrcrsrrrsrresrressrrsrrresrersresresreeseeesreresrereeere 2 L2 Technical SpeciicaloONS esere n R AA 3 1 3 VBT 75 Controls and Indicators sessessssssessresesrerrrsrrrsrrssrresrersrrresrresrrssresrreseersreesreeseeree 4 20 CABLECONNECTIONS erruin dena 6 30 OPERATING PROCEDURE unire 7 Sek SeCtiSDI eat 7 3 2 Changing the LCD Screen Contrast ii 8 33 Perotti 9 34 Changing Test Para Mele Sloane iii 11 LIST OF TABLES Table 1 VBT 75 Technical Specifications 3 Table 2 Functional Descriptions of VBT 75 Controls and Indicators 5 LIST OF FIGURES Figure 1 VBT 75 Cont
9. rols aNd INDICATOFS suiricrniir ironia 4 Figure 2 VBT 75 Connection Diagram iii 6 REV1 VBT 75 USER S MANUAL CONVENTIONS USED IN THIS DOCUMENT This document uses the following conventions e A key or switch on the VBT 75 is indicated as KEY and SWITCH e Screen and menu names are referenced as SCREEN MENU NAME e VBT 75 LCD screen output is shown as e Warning messages are indicated as e Important notes are indicated as a VBT 75 USER S MANUAL REV1 1 0 INTRODUCTION 1 1 General Description and Features The VBT 75 is a microprocessor based portable 75kV dc vacuum bottle tester This lightweight portable tester is designed for testing circuit breaker vacuum bottles in the field and at the shop Test voltages can be selected from 10 kV dc to 75 kV dc in 5 kV steps The high voltage test time can be set from 5 seconds to 2 minutes The test voltage is raised to the selected voltage and held for the test time duration After the test time duration has elapsed and the leakage current did not pass the pre set value of 100 uA 200 uA or 300 LA the test voltage is returned to zero and a Pass message is displayed If a flash over condition occurs such as bottle failure the test voltage is immediately turned off a Failure message is displayed on the LCD screen and the TEST FAIL LED light on the unit is also illuminated The presence of high voltage is indicated by
10. tation ground using the provided cable TEST FAIL Test failure indicator This indicator turns on if the test current exceeds the present current threshold 100 200 or 300 uA CHANGE VBT turn and press control knob SELECT HIGH VOLTAGE This indicator turns on when high test voltage is present at the test leads ENABLE PUSH TO Arm switch press and hold during testing ARM GROUND High voltage return cable connector VBT 75 USER SMANUAL REV1 2 0 CABLE CONNECTIONS The VBT 75 comes furnished with one 10 foot 3 05m high voltage cable and one 10 foot voltage return cable Both cables are terminated with alligator clamps that are used to connect to the vacuum bottle being tested A typical cable connection is shown in Figure 2 below A e To protect the VBT 75 against static discharge in the substation always connect the unit s ground stud to the substation ground WARNING The circuit breaker must be off line and completely isolated e The vacuum bottle under test should be in the OPEN position RS 232C CHANGE GE TEST FAIL SELECT PUSH TO T T uC TEST ARM ED THIS W Figure 2 VBT 75 Connection Diagram REV1 VBT 75 USER S MANUAL 3 0 3 1 OPERATING PROCEDURES Set the Date and Time Follow the steps below to set the date and time for the VBT 75 s internal clock a Start from the START UP menu MAIN lt RUN TEST gt 14 16 15 Turn the CONTROL KNOB until the following screen is display
Download Pdf Manuals
Related Search