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Table of Contents 

 

04/14 

ii 

INVALID SWITCH SETTING ..................................................................... 11

 

SET CURRENT TO 0.00 ........................................................................... 11

 

XMTR not empty ...................................................................................... 11

 

*** (Over-range Indicators) ..................................................................... 11

 

Troubleshooting and Repair .................................................................... 12

 

Doesn't Work The First Time ............................................................................. 12

 

Identical Or Near Zero Results .......................................................................... 12

 

Inaccurate Test Current Display ....................................................................... 13

 

Failed or Suspect Printed Circuit Card .............................................................. 13

 

Printed Circuit Card Listing ............................................................................... 13

 

Other Features ........................................................................................ 14

 

Serial (RS-232C) Communications Port ............................................................. 14

 

Serial Port Configuration ........................................................................ 14

 

Serial Port Baud Rate .............................................................................. 15

 

Remote Commands ............................................................................................ 15

 

RS-232 Data Record Formats ............................................................................ 16

 

RATIO ERROR AND MINUTES ................................................................. 17

 

RATIO ERROR AND MILLIRADIANS ........................................................ 19

 

RATIO CORRECTION FACTOR AND MINUTES ........................................ 21

 

RATIO CORRECTION FACTOR AND MILLIRADIANS ............................... 23

 

REDUCED (TWO-LINE) PRINTOUT ........................................................... 25

 

TEST CURRENT OUTPUT ........................................................................ 26

 

Warranty .................................................................................................. 27

 

 

Summary of Contents for Knopp KATC-C1

Page 1: ...for the TYPE KATC C1 AUTOMATIC TRANSFORMER COMPARATOR Serial Number _______ Leaflet Number 2 048 Revision A April 2014 Knopp Incorporated 1307 66th Street Emeryville California 94608 510 653 1661 800 227 1848 510 653 2202 FAX ...

Page 2: ...s 6 MEASURE Push button 6 HOLD RUNDOWN Push button 7 PRINT Push button 7 Operating Procedures 7 Connecting the Transformer Under Test 7 Performing a Test 7 One to One Test 9 Display Messages 9 Freq Counter no Start 9 Freq Counter no Finish 10 REF COUNTER 0 10 ERROR COUNT REF COUNT 10 S E COS 25 00 10 WRONG POLARITY 10 PHASE ANGLE 45 10 S Ecos 2 Esin 2 625 10 A D not low start 10 A D not high 10 A ...

Page 3: ...ay 13 Failed or Suspect Printed Circuit Card 13 Printed Circuit Card Listing 13 Other Features 14 Serial RS 232C Communications Port 14 Serial Port Configuration 14 Serial Port Baud Rate 15 Remote Commands 15 RS 232 Data Record Formats 16 RATIO ERROR AND MINUTES 17 RATIO ERROR AND MILLIRADIANS 19 RATIO CORRECTION FACTOR AND MINUTES 21 RATIO CORRECTION FACTOR AND MILLIRADIANS 23 REDUCED TWO LINE PR...

Page 4: ...econdary of the Transformer Under Test The KATC C1 has protective circuitry which helps prevent damage when the Transformer Under Test TUT is improperly connected A serial RS 232C input output port is included as a standard feature This port can be used to download KATC C1 test data to a computer for data storage and or analysis The port can also be used to control various functions of the KATC C1...

Page 5: ... reading 1 Least Significant Digit or 0 01 ratio error and 0 3 minutes phase angle er ror whichever is greater Interlock Relay Capable of carrying 120 240 Volts at a maximum of 10 Amperes Burden on Reference Transformer Less than 0 2 VA typical Burden on TUT Less than 0 2 VA typical Resolution RCF Phase Angle Minutes Accuracy Class 0 0 Accuracy Class 0 2 0 00001 0 01 0 01 0 2 Accuracy Class 0 7 0 ...

Page 6: ...KATC C1 Instructions Page 3 04 14 RS 232 Serial Communications Port 1200 or 9600 baud user selectable 8 Data Bits No Parity 2 Stop Bits Bi directional ...

Page 7: ...et the old comparator aside and place the KATC C1 on top of the KCTS so that the leads can be attached Connect the two interlock leads to the black five way binding posts on the rear of the KATC C1 polarity is not important Next connect the automatic run down leads to the solid state relay mounted on the rear of the KATC C1 Connect the power cord to the rear of the KATC C1 5 Some rewiring will be ...

Page 8: ...ions have been made correctly and that they are all tight The drawing below shows the transformer connections to be made to the terminal board on the rear panel of the KATC C1 if the KATC C1 is not used as a part of a test system This connection allows the KATC C1 to be used with a standard transformer and burden in a bench top situation The AC Supply shown on the drawing should be controlled by a...

Page 9: ...ctor RCF E 100 RCF 1 PHASE ERROR Switch Allows the phase angle error of the transformer under test to be displayed in Minutes MIN or Milli radians MR 1 Minute 0 29089 Milliradians 50 60 Hz LEDs Indicate whether the KATC C1 has detected the applied test current to be 50 or 60 Hz If no test current is applied the LEDs default to 60 Hz MEASURE Push button Toggles the KATC C1 between MEASURE and RUNUP...

Page 10: ...hown later in this manual Operating Procedures Connecting the Transformer Under Test If you are using the KATC C1 without one of the Knopp Transformer Testing Systems connect the transformers according to the instructions for Portable Use as shown in the previous chapter When using the KATC C1 with a Knopp Transformer Test System refer to the instruction manual for your system for transformer conn...

Page 11: ...e results in the display then reduce the current to zero a If the KATC C1 is installed in a KCTS the test current is automatically reduced to zero or near zero upon pressing HOLD RUNDOWN if the AUTO RUNDOWN switch located in the KCTS is turned on Refer to the KCTS Instruction Manual for more information on this feature b The HOLD status is denoted on the KATC C1 display by the appearance of a box ...

Page 12: ... to Printed Circuit Cards These cards are located in the KATC C1 card cage The card cage is accessed by unscrewing the two thumbscrews on the rear of the KATC C1 and removing the fan assembly Each card in the card cage is identified by a numbered plastic ejector It is these ejectors which are referred to as a card number in the descriptions which follow Some of these messages are accompanied by an...

Page 13: ...er Test is connected with incorrect polarity the display will indicate WRONG POLARITY Continuing to increase the current will trigger the audible alarm and result in an opening of the KATC C1 interlock relay PHASE ANGLE 45 This message indicates that the phase angle error of the transformer under test is greater than 45 An error of this magnitude is too large for the KATC C1 to accurately measure ...

Page 14: ...ween RUNUP and MEASURE modes HOLD RUNDOWN This message indicates that the KATC C1 is in HOLD RUNDOWN mode but that there is no valid data to display INVALID SWITCH SETTING This message indicates that the REFERENCE TRANSFORMER switch is set to 1 ampere and the TRANSFORMER UNDER TEST switch is set to 5 amperes This combination is not valid One of the two switch settings must be changed in order to p...

Page 15: ...o errors the Error Resistor Card has probably been damaged This can occur if a TUT has been connected with wrong polarity or you have selected the wrong current range wrong ratio Both conditions will cause excessive error current and if the condition is severe enough may defeat the protective circuitry in the KATC C1 Remove Card 1 and inspect it for any burned resistors or traces The relays on thi...

Page 16: ... the need to troubleshoot the failure down to a particular compo nent on a card While the KATC C1 is under warranty the card exchange is performed for no charge After the warranty has expired there is a flat charge for the card exchange Once the new card has been received and installed the defective card is returned to Knopp This method of troubleshooting allows you to minimize your time spent in ...

Page 17: ... is not required Pins used by the KATC C1 are pin 2 transmitted data TD pin 4 request to send RTS pin 5 clear to send CTS pin 6 data set ready DSR pin 7 signal ground GND pin 8 carrier detect CD pin 20 data terminal ready DTR Under normal operation the KATC C1 is not trying to send data and is assuming Data Set configura tion the TD DSR and CD lines pins 2 6 and 8 respectively are always high appr...

Page 18: ...er indicates the desired command taken from the following list CR indicates a carriage return 0 D hex and specifies the end of the com mand Following is a list of commands which can be sent to the KATC C1 from a remote computer Command Character Description H This command is the same as pressing the Hold Rundown push button It causes the KATC C1 to hold the test results in the display and initiate...

Page 19: ...uts reduced printout and test current output described in the preceding section The format of these printouts are provided here as well Data files of KATC C1 data are written in ASCII format and can be printed as ASCII files They will appear in the same formats as the examples shown later in this document Each record of data will be stored as one long string of bytes Thus to locate a particular fi...

Page 20: ...PS MINUTES CR LF XXX X XXX X XX XX XXX XXX XXX XX XX XX CR LF CR LF CR LF Record layout 1 6 38 57 C T T E S T R E F T R A N S F O R M E R S E C X A M P S F R E Q U E N C Y X X H Z 67 69 R E F T U T T U T 131 T E S T T E S T T E S T R A T I O P H A S E A C C U R A C Y 193 C U R R E N T C U R R E N T C U R R E N T E R R O R E R R O R C L A S S 255 285 294 A M P S M I N U T E S 319 329 339 346 358 37...

Page 21: ...KATC C1 Instructions Page 18 04 14 Notes When the TUT Test Current Switch is set to 1 ampere the decimal point for the TUT TEST CURRENT AMPS printout is shifted one digit to the left X XXX ...

Page 22: ...MPS MILLIRAD CR LF XXX X XXX X XX XX XXX XXX XXX XX XX XX CR LF CR LF CR LF Record layout 1 6 38 57 C T T E S T R E F T R A N S F O R M E R S E C X A M P S F R E Q U E N C Y X X H Z 67 69 R E F T U T T U T 131 T E S T T E S T T E S T R A T I O P H A S E A C C U R A C Y 193 C U R R E N T C U R R E N T C U R R E N T E R R O R E R R O R C L A S S 255 285 294 A M P S M I L L I R A D 319 329 339 346 35...

Page 23: ...KATC C1 Instructions Page 20 04 14 Notes When the TUT Test Current Switch is set to 1 ampere the decimal point for the TUT TEST CURRENT AMPS printout is shifted one digit to the left X XXX ...

Page 24: ...FACTOR MINUTES CR LF XXX X XXX X XX XX X XXXXX XXX XX XX XX CR LF CR LF CR LF Record layout 1 6 38 57 C T T E S T R E F T R A N S F O R M E R S E C X A M P S F R E Q U E N C Y X X H Z 67 69 R E F T U T T U T 131 T E S T T E S T T E S T R A T I O P H A S E A C C U R A C Y 193 C U R R E N T C U R R E N T C U R R E N T C O R R E R R O R C L A S S 255 285 294 A M P S F A C T O R M I N U T E S 319 329 ...

Page 25: ...KATC C1 Instructions Page 22 04 14 Notes When the TUT Test Current Switch is set to 1 ampere the decimal point for the TUT TEST CURRENT AMPS printout is shifted one digit to the left X XXX ...

Page 26: ... FACTOR MILLIRAD CR LF XXX X XXX X XX XX X XXXXX XXX XX XX XX CR LF CR LF CR LF Record layout 1 6 38 57 C T T E S T R E F T R A N S F O R M E R S E C X A M P S F R E Q U E N C Y X X H Z 67 69 R E F T U T T U T 131 T E S T T E S T T E S T R A T I O P H A S E A C C U R A C Y 193 C U R R E N T C U R R E N T C U R R E N T C O R R E R R O R C L A S S 255 285 294 A M P S F A C T O R M I L L I R A D 319 ...

Page 27: ...KATC C1 Instructions Page 24 04 14 Notes When the TUT Test Current Switch is set to 1 ampere the decimal point for the TUT TEST CURRENT AMPS printout is shifted one digit to the left X XXX ...

Page 28: ... LF CT TEST REF TRANSFORMER SEC X AMPS FREQUENCY XX HZ CR LF XXX X XXX X XX XX XXX XXX XXX XX XX XX CR LF CR LF Record layout 1 4 36 55 C T T E S T R E F T R A N S F O R M E R S E C X A M P S F R E Q U E N C Y X X H Z 67 77 87 94 106 118 X X X X X X X X X X X X X X X X X X X X X X X X X X X 127 Notes When the TUT Test Current Switch is set to 1 ampere the decimal point for the TUT TEST CURRENT AMP...

Page 29: ...e of the command is to allow use of the KATC C1 in an automated environment In such an environment it may be useful to know the present value of the transformer under test secondary current as an aid in automatically adjusting the test current to the desired value ASCII format CR LF XX XX CR LF CR LF Record layout 1 3 X X X X 10 Notes When the TUT Test Current Switch is set to 1 ampere the decimal...

Page 30: ...d of ONE YEAR If the KATC C1 does not perform in accordance with stated operating specifications 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 Chapter 7 ...

Page 31: ...r 14 Frequency 2 H HOLD RUNDOWN 11 I Identical Or Near Zero Results 12 Input Power 2 Installation 4 interlock 12 Interlock 2 INVALID SWITCH SETTING 11 K KCTS 4 M MEASURE 11 modes Measure 7 Run Up 7 O Operation 6 OUTPUT Test Current 23 P Phase Error 2 Portable Use 5 Printed Circuit Card Listing 13 PRINTOUT Reduced Two Line 22 protective circuitry 1 push button Measure 7 Push button Hold Rundown 7 M...

Page 32: ...ial RS 232C input output port 1 SET CURRENT TO 0 00 11 Switch ON OFF 6 Ratio Error 6 Reference Transformer 6 Transformer Under Test 6 T test One to One 9 Test Performing 7 test current adjust slowly 7 Test Current 2 Transformer Under Test Connecting 7 Troubleshooting and Repair 12 W Warranty 24 WRONG POLARITY 10 X XMTR not empty 11 ...

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