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Tesco KNOPP KATC-V, Руководство по эксплуатации, Страница: 11 / 19

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No. 2-014 (KATC-V) 

Page 9  

PM-19-10-004, Rev F 

 

 

 

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Figure 3 - KATC-V Printed Circuit Cards 

 
 
 

 

 

 

15B

 

5.3  Test Voltage Display Remains at (or Near) Zero 

 
 

 

If the digital voltage display on the KATC-V does not increase as the variac 
knob on the test equipment is turned, or the test results are not believable, 
the most probable reason is a tripped circuit breaker on the rear of the 
KATC-V. Check the breaker and, if it is tripped, reset it.  The Red neon light 
on the front panel will light if the Breaker is tripped. 

 

Содержание KNOPP KATC-V

Страница 1: ...ATC V AUTOMATIC TRANSFORMER COMPARATOR Leaflet Number 2 014 PM 19 10 004 Revision F Initial Release 9 12 19 Updated 9 12 19 Knopp A TESCO Company 1307 66th Street Emeryville California 94608 510 653 1661 HUsales knoppinc comU HUwww knoppinc comU ...

Страница 2: ...nd RepairU 7 U5 1U UDoesn t Work The First TimeU 8 U5 2U UAlarm Too SensitiveU 8 U5 3U UTest Voltage Display Remains at or Near ZeroU 9 U5 4U U No Zero Crossing MessageU 10 U5 5U U EOC MessageU 10 U5 6U UTest Voltage Display InaccurateU 11 U6 Optional FeaturesU 11 U6 2U USerial RS 232C Output PortU 11 U6 3U URS 232 DATA RECORD FORMATSU 12 U6 3 1U URATIO ERROR AND MINUTESU 13 U6 3 2 U URATIO ERROR ...

Страница 3: ...st voltage The KATC V has protective circuitry that helps prevent damage when the Trans former Under Test TUT is improperly connected Options allow connection to a computer via an RS 232C serial port 1B2 Specifications Input Power 120 VAC 50 60 Hz less than 0 2A Test Frequency 60 Hz 50 60 Hz optional Test Voltage Range 50 to 150V in the secondary of the TUT Ratio Error Range 100 to 1000 0 to 10 Ra...

Страница 4: ...B3 Installation 7B 3 1 Portable Use Figure 1 shows the transformer connections to be made to the terminal board on the rear panel of the KATC V when the KATC V is being used in a portable environment not mounted in a transformer test system The AC Supply shown on the drawings should be variac controlled such that you can apply voltage gradually PRI PRI SEC SEC S U G C Burden KATC V Terminal Board ...

Страница 5: ... as appropriate One to One Test The One to One test is a method for checking the calibration of the KATC V and associated standard transformer The One to One test shown in Figure 2 is to be used if you are not using the KATC V with the Knopp KVTS or 1G2 Transformer Test System If the KATC V is installed in a KVTS or 1G2 see the instruction manual included with that unit for information on running ...

Страница 6: ... Factor RCF or Percent Ratio Error Percent Ratio Error 100 RCF 1 MINUTES MILLIRADIANS Allows the phase angle error to be Switch displayed in Minutes or Milliradians 1 Minute 0 29089 Milliradians HOLD PRINT Push button 1 The first press freezes the displayed data so that the test voltage can be reduced to zero with the error results still available A box is displayed next to the voltage to denote t...

Страница 7: ...nection instructions 2 When power is first applied to the KATC V the display will momen tarily show RESET After this message disappears test voltage data is displayed 3 Slowly adjust the test voltage secondary voltage of the Transformer to the desired value Note that the data will not be displayed until the Test Voltage reaches 10 VAC UCAUTION IF THE TEST VOLTAGE IS APPLIED TOO QUICKLY THE KATC V ...

Страница 8: ...the standard transformer as shown in Fig ure 2 earlier in this manual When using the KATC V with the KVTS or 1G2 refer to the instruction manual for your system for One to One test instructions 2 When power is first applied to the KATC V the display will momen tarily show RESET After this message disappears test voltage data is displayed 3 Slowly adjust the test voltage to the desired value Note t...

Страница 9: ...ceeds 5 volts the display will indicate REDUCE VOLTAGE THEN RESET the audible alarm will sound and power will be removed from the loading system provided that you have connected the interlock feature properly The same re sponse will occur if test voltage is applied too quickly Excessive er ror voltage can result if the TUT is connected with wrong polarity or if the wrong ratio is chosen 2 The foll...

Страница 10: ...the ribbon cables Make sure that the cards snap into place Al so check your connections to the transformer s and to the loading system 14B 5 2 Alarm Too Sensitive This could be caused by applying the test voltage too quickly Try increasing the voltage gradually If necessary the sensitivity can be adjusted as fol lows a Remove the KATC V rear cover and locate R11 on Card 3 Error Amp See Figure 3 be...

Страница 11: ...s 15B 5 3 Test Voltage Display Remains at or Near Zero If the digital voltage display on the KATC V does not increase as the variac knob on the test equipment is turned or the test results are not believable the most probable reason is a tripped circuit breaker on the rear of the KATC V Check the breaker and if it is tripped reset it The Red neon light on the front panel will light if the Breaker ...

Страница 12: ... relay is being used to interrupt the main supply of a voltage source it may be necessary to use the KATC V interlock relay to control a larger contactor type relay in order to minimize the voltage and or current passed through the KATC V interlock relay 16B 5 4 No Zero Crossing Message If you see a message that reads No Zero Crossing LOW or No Zero Crossing HIGH and can be caused by a problem wit...

Страница 13: ... RS 232C Output Port If the RS 232C port option was purchased the DB 25 connector on the rear of the KATC V can be connected to a computer with a serial port Pressing the HOLD PRINT button initiates a printout A sample printout is shown be low CR LF CR LF VT TEST CR LF TEST RATIO PHASE ACCURACY CR LF VOLTAGE ERROR ERROR CLASS CR LF VOLTS MINUTES CR LF 120 0 0 002 0 26 0 01 CR LF CR LF CR LF where ...

Страница 14: ...r field of data you must know in which byte it begins The record layouts given here show the exact byte locations for the data fields in each of the four records All data records are of fixed format Each record is 218 bytes in length Included in this document is an example of each type of KATC V record in ASCII format and record layout CR LF indicate 2 bytes in the record for Carriage Return and L...

Страница 15: ...S E A C C U R A C Y 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 89 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 V O L T A G E E R R O R E R R O R C L A S S 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 131 141 150 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 H 0 0 H 0 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 0 0 0...

Страница 16: ...A S E A C C U R A C Y 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 89 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 V O L T A G E E R R O R E R R O R C L A S S 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 131 141 150 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 H 0 0 H 0 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 0 0...

Страница 17: ... H A S E A C C U R A C Y 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 89 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 V O L T A G E C O R R E R R O R C L A S S 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 131 141 150 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 H 0 0 H 0 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 0 ...

Страница 18: ... P H A S E A C C U R A C Y 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 89 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 V O L T A G E C O R R E R R O R C L A S S 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 131 141 150 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 H 0 0 H 0 0 0 0 0 0 0 0 0 0 H 0 0 0 0 0 ...

Страница 19: ...fications during the warranty period necessary parts and assistance will be supplied under warranty to restore the equipment to service Normal service is accomplished through telephone consultation with the Knopp Engineering Department Parts are shipped by overnight carrier APPROVAL CHANGE RECORD Approval Record Originator Jameson Kern Title Technical Manager Date 12 Sep 19 Change Record Revision ...

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