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ISA CIRCUIT BREAKERS TEST SETS

ISA CIRCUIT BREAKERS TEST SETS. ISA INTERNATIONAL SYMPOSIUM 2008. CB TEST SETS. CBA 1000. CBA 2000. CBA 1000. 1 Transducer input. 1 HV input. 2 breaks per phase. 200 A µ Ω meter. 1 or 3 Open 1 Close. 4 auxiliary digital inputs. Large Graphical display. Thermal printer.

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ISA CIRCUIT BREAKERS TEST SETS

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  1. ISA CIRCUIT BREAKERS TEST SETS ISA INTERNATIONAL SYMPOSIUM 2008

  2. CB TEST SETS CBA 1000 CBA 2000

  3. CBA 1000 1 Transducer input 1 HV input 2 breaks per phase 200 A µΩmeter 1 or 3 Open 1 Close 4 auxiliary digital inputs Large Graphical display Thermal printer Knob control USB and RS232 Comm port Keypad

  4. CBA 2000 3 Transducers inputs 200 A µΩmeter 2 HV analog inputs Relay output Sync in/out 1 or 3 Open 1 Close command 2/4/6 breaks per phase 5 Function keys 4/8/12 auxiliary digital inputs Large Graphical display START and SEL Minimum trip coil Control Knob USB/RS232 and Flash memory Keypad

  5. MAIN FUNCTIONS • Open and Close coils drive • Main and auxiliary contact timing • measurement • Open and Close coil current profiles • SRM and DRM tests • Travel and speed measurement • Other measurements: battery or motor • voltage and current • Graphical display: no need of printer • Battery operated • Both Sides Grounded option CB TEST SETS

  6. CBA 2000 PLUS WITH RESPECT TO CBA 1000 • 2/4/6 breaks per phase instead of 2; • 4/8/12 auxiliary inputs instead of 4; • Three transducers inputs instead of 1; • Two 500 V inputs instead of 1; • Five function keys; • USB memory drive; • One relay output contact; • Memory: 256 Mbyte instead of 128 Mbyte CB TEST SETS

  7. CB TEST SETS COIL DRIVERS CHARACTERISTICS • STANDARD: 1 open - 1 close command • OPTIONAL: 3 open - 1 close command • Electronic driver for superior timing control. • Driver: 300 V DC max; 25 A DC max. • Operating time accuracy: 100 us. • Coil current ranges: 2.5; 10; 25 A • Accuracy: 0.5% of the rdg ± 0.1% of the range. • Connection: via safety sockets. • Outputs are isolated between them.

  8. CB TEST SETS Main and resistor contact inputs • 2 breaks per phase std; up to 6 CBA2000 • Isolated among them • Resistor range : 25 to 10,000 Ω • Test voltage: 24 V (50 mA max) Auxiliary inputs • Groups of 2 inputs • 4 std; up to 12 CBA2000 • Dry / wet selection • Wet voltage range: 20 to 300 V

  9. CB TEST SETS TIME MEASUREMENT CHARACTERISTICS

  10. CB TEST SETS ANALOG INPUTS • 2 or 4 for Coil Current measurements • HV analog inputs: 5V, 50V, 500V • Transducers inputs: one, ± 5 V for CBA 1000; three, ± 10 V for CBA 2000 • One for DRM and SRM measurement • Analog Resolution: 16 bit

  11. CB TEST SETS Open and Close currents Measuring cursors Zooming Main contact and resistance time measurements 3 Travel Transducers Auxiliary contact time measurement

  12. CB TEST SETS • STATIC AND DYNAMIC CONTACT RESISTANCE TEST • Embedded micro-Ohmmeter • 200 A pure DC current • 3 I Ranges: 200 A – 100 A – 20 A • R ranges: 200 uOhm – 1.000 mOhm– • 10.00 mOhm – 100.0 mOhm • Static resistance test ( SRM ) • Dynamic resistance test ( DRM )

  13. CB TEST SETS DYNAMIC CONTACT RESISTANCE TEST: CLOSE

  14. CB TEST SETS DYNAMIC CONTACT RESISTANCE TEST: OPEN

  15. CB TEST SETS DYNAMIC CONTACT RESISTANCE TEST: REAL CASE COIL CURRENT VOLTAGE PROBLEM! TEST CURRENT RESISTANCE

  16. CB TEST SETS • DIGITAL TRANSDUCERS • Operating principle: two traces, phase shifted • Two digital inputs for one transducer • One transducer: A3, A4; three transducers: also A7, A8, A11, A12 FORWARD BACKWARD

  17. CB TEST SETS • DIGITAL TRANSDUCERS • Transducer accuracy: impulses per turn • BAUMER BDK 16.24K: 1024 impulses/turn • Angular movement: 90° • ►250 impulses to design the movement • Movement in 30 ms • ►Frequency = 8.3 kHz • Two digital inputs for one transducer

  18. CB TEST SETS • FIRST TRIP TEST • When the CB is opened to connect it to CBA, the friction is lost • It is impossible to connect to CB main contacts before opening it • Solution: sense the currents

  19. CB TEST SETS FIRST TRIP TEST I CB CT Busbar with voltage I Clamp OPEN COIL COMMAND Circuit Transducer inputs 500 V input CBA

  20. CB TEST SETS • FIRST TRIP TEST • Test result (one phase) 500 V 1 Analog 1 First trip delay • First trip: from coils command to I off • The option requests three clip-on transformers • CBA 2000 only

  21. CB TEST SETS • MAINS SYNCHRONIZATION • Some CB’s open and close at the voltage zero crossing • Request: check timing with respect to zero crossing • Solution: sense the VT voltage

  22. CB TEST SETS MAINS SYNCHRONIZATION CB VT Divider uOhm HV 1 HV 2 CBA

  23. CB TEST SETS • MAINS SYNCHRONIZATION • The VT voltage is sensed and displayed connecting it to an HV input • If the three phases are requested, we will provide a divider for the micro-Ohm input (CBA 2000 only)

  24. CB TEST SETS • MAINS SYNCHRONIZATION • Test result (one VT) HV 1 A1 B1 C1

  25. CB TEST SETS WINDOWS based software • Same TDMS software to handle CBA 1000 and CBA 2000 results as well as other ISA test equipments. • Same reporting structure. • Remote CB testing control. • Create – Open – Save a test plan. • CabaWin results compatible.

  26. CB TEST SETS Create test plan

  27. Set transducer test CB TEST SETS

  28. Results analysis CB TEST SETS

  29. CB TEST SETS LAST, BUT NOT LEAST… CIRCUIT BREAKER SIMULATOR!

  30. CIRCUIT BREAKER SIMULATOR PERFORMANCES: ONE CLOSE AND THREE OPEN COMMANDS TWO BREAKS PER PHASE; THREE PHASES FOUR AUXILIARY CONTACTS MICROOHMETER STATIC RESISTANCE TEST AND… TRAVEL TRANSDUCER SIMULATION! DYNAMIC RESISTANCE TEST! CB TEST SETS

  31. CIRCUIT BREAKER SIMULATOR COMPLETE SIMULATION OF CBA PERFORMANCES! CB TEST SETS

  32. CIRCUIT BREAKER SIMULATOR CB TEST SETS MICRO-OHM CONNECTIONS MAIN CONTACTS OPEN COMMANDS TRANSD. OUTPUTS AUX CONTACTS

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