1. ISA CIRCUIT BREAKERS TEST SETS
Saluti e presentazione del team ISA – Giro di presentazione dei distributori ISA
ISA INTERNATIONAL SYMPOSIUM 2008

2. CB TEST SETS
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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
Minimum trip coil
START and SEL
Control Knob
USB/RS232 and Flash memory
Keypad

5. CB TEST SETS 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
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6. CBA 2000 PLUS WITH RESPECT TO CBA 1000
CB TEST SETS
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
Saluti e presentazione del team ISA – Giro di presentazione dei distributori ISA

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 Auxiliary inputs 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 Sampling rate Resolution
Max recording time
20 kHz
50 µs
1 s
10 kHz
100 µs
2 s
5 kHz
200 µs
2 kHz
500 µs
10 s
1 kHz
1 ms
20 s
500 Hz
2 ms
40 s
200 Hz
5 ms
100 s
100 Hz
10 ms
1000 s

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 11

12. CB TEST SETS Embedded micro-Ohmmeter 200 A pure DC current
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 – mOhm–
10.00 mOhm – 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 15

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. WINDOWS based software
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. CB TEST SETS
Set transducer test 27

28. CB TEST SETS
Results analysis 28

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

30. CB TEST SETS 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! 30

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

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