ISA CBA2000 User manual

DATE: 19/03/2015 DOC.SIE10169 REV.13
CIRCUIT BREAKER ANALYZER
AND MICROOHMMETER
MOD. CBA2000
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Doc. SIE10169 Rev. 13 Page 3 of 32
APPLICABLE STANDARDS .........................................................................................................................................4
1 INTRODUCTION ....................................................................................................................................................... 5
2 CHARACTERISTICS ................................................................................................................................................8
2.1 COIL DRIVING CIRCUITS ............................................................................................................................................8
2.2 MAIN CONTACT INPUTS ............................................................................................................................................. 8
2.3 AUXILIARY INPUTS AND OUTPUTS............................................................................................................................. 8
2.4 INPUTS TIMING...........................................................................................................................................................9
2.5 ANALOG INPUT ..........................................................................................................................................................9
2.5.1 Coil currents...................................................................................................................................................... 9
2.5.2 High voltage analog inputs............................................................................................................................... 9
2.5.3 Low voltage analog inputs................................................................................................................................9
2.5.4 Digital transducers.......................................................................................................................................... 10
2.6 TIME MEASUREMENT TRIGGERS............................................................................................................................... 10
2.7PROGRAMMABLE SEQUENCES.................................................................................................................................. 10
2.8 STATIC RESISTANCE MEASUREMENT (OPTIONAL)................................................................................................. 11
2.9 DYNAMIC RESISTANCE MEASUREMENT (OPTIONAL) ............................................................................................ 12
2.10 TEST SET CONTROL................................................................................................................................................ 12
2.11 DATA MANAGEMENT ............................................................................................................................................. 12
2.12PC SOFTWARE ........................................................................................................................................................ 13
2.13 MENU SELECTIONS ................................................................................................................................................ 13
2.14 OTHER CHARACTERISTICS..................................................................................................................................... 14
3 OPTIONS.................................................................................................................................................................... 15
3.1 STATIC AND DYNAMIC RESISTANCE MEASUREMENT................................................................................................ 15
3.2 FOUR COIL COMMANDS........................................................................................................................................... 15
3.3 ADDITIONAL MAIN AND AUXILIARY INPUTS............................................................................................................. 15
3.5 EXTERNAL PRINTER,CODE PII14102....................................................................................................................... 15
3.6 INTERNAL PRINTER. ................................................................................................................................................. 15
3.7 MINIMUM TRIP COIL TESTER ................................................................................................................................... 15
3.8 BASIC CONNECTION CABLES SET;OPTION PII15169................................................................................................. 16
3.9 LONG CONNECTION CABLES;CODE PII81169........................................................................................................... 19
3.10 TRANSIT CASE........................................................................................................................................................ 20
3.11 SOFT PROTECTION BAG.......................................................................................................................................... 21
3.12 DOUBLE EARTH TESTER BSG1000, CODE PII21166 .............................................................................................. 21
3.13 POSITION TRANSDUCERS........................................................................................................................................ 24
3.13.1 Analog transducers...................................................................................................................................... 24
3.13.2 Digital transducers....................................................................................................................................... 25
3.14 HALL EFFECT CLIP-ON TRANSFORMER FOR IMEASUREMENTS,CODE PII29166. .................................................... 25
3.15 AC CURRENT CLAMP,CODE PII88169. .................................................................................................................. 26
3.16 PRESSURE TRANSDUCER,CODE PII13169. ............................................................................................................. 26
4 PROTECTIONS ........................................................................................................................................................ 28
APPENDIX A: MENU SELECTIONS......................................................................................................................... 29
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Doc. SIE10169 Rev. 13 Page 4 of 32
APPLICABLE STANDARDS
The test set conforms to the EEC directives regarding Electromagnetic Compatibility and Low
Voltage instruments.
A) Electromagnetic Compatibility:
Directive no. 2004/108/EC. Applicable Standard : EN61326-1 + A1 + A2.
.
EMISSION
- EN 61000-3-2 + A2: Harmonic content of power supply. Acceptable limits: basic.
- EN 61000-3-3 + A1: Limitation of voltage fluctuations and flicker. Acceptable limits: basic.
- CISPR16 (EN 55011 class A): Limits and measurement methods of radio-electric disturbances for
industrial, medical and scientific instruments at radio-electric frequencies.
Acceptable limits for conducted emission:
. 0.15-0.5 MHz: 79 dB pk; 66 dB avg.
. 0.5-5 MHz: 73 dB pk; 60 dB avg.
. 5-30 MHz: 73 dB pk; 60 dB avg.
Acceptable limits for radiated emission:
. 30-230 MHz: 40 dB (30 m)
. 230-1000 MHz: 47 dB (30 m)
IMMUNITY
- EN 61000-4-2 + A1 + A2: Immunity tests for ESD. Test values: 8 kV in air; 4 kV in contact.
- EN 61000-4-3 + A1; Immunity tests for radio frequency interference. Test values (f= 900 5
MHz): field 10 V/m, modulated AM 80%; 1 kHz
- EN 61000-4-4; Immunity tests for high speed transients (burst). Test values: 2 kV peak; 5/50 ns.
- EN 61000-4-5 + A1; Immunity tests for surge. Test values: 1 kV peak differential mode; 2 kV
peak common mode; 1.2/50 us.
- EN 61000-4-6 + A1: immunity to low-voltage sinusoidal waveform. Test values: 0.15-80 MHz, 10
Vrms, 80% AM 1 kHz.
- EN 61000-4-8 + A1: Immunity tests for low frequency magnetic fields. Test values: 30 Arms/m.
- EN 61000-4-11: Immunity test for power supply drops. Test value: 1 cycle; 100% drop.
B) Low Voltage Directive
--Directive n. 2006/95/EC. Applicable standard: EN 61010-1. In particular, for a pollution
degree 2:
- Dielectric rigidity 1.4 kV AC, 1 minute.
- Inputs/outputs protection: IP 2X - EN60529.
- Operating temperature: - 10 °C to 55 °C; storage: - 20 °C to + 70 °C.
- Relative humidity : 5 - 95%, without condensing.
- Vibration: IEC 68-2-6 (20 m/s^2 at 10 –150 Hz);
- Shock: IEC 68-2-27 (15 g; 11 ms; half-sine).
- Altitude: less than 2000 m.
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Doc. SIE10169 Rev. 13 Page 5 of 32
1 INTRODUCTION
The circuit breaker analyzer and microOhmmeter model CBA2000 is a two-in-one test set.
When used as a circuit breaker analyzer, it allows the off-line testing of the characteristics of all
modern MV and HV circuit breakers. The test set measures CB operation times as they are defined
in the IEC standard 62271-100; in particular:
. Opening time: see 3.7.133;
. Closing time: see 3.7.136;
. O-C time: see 3.7.139;
. C-O time: see 3.7.143;
. Minimum trip duration: see 3.7.146;
. Minimum close duration: see 3.7.147.
When used as a microOhmmeter, it allows measuring the contact resistance of the circuit breaker
contact, or also of joints or other circuit parts. It allows also to perform the dynamic test of the
contact resistance, that is to record and display how does the contact resistance change while it is
closing: this allows detecting hidden defects, that are otherwise impossible to be diagnosed.
The instrument performs the following features:
Test set control: via keypad plus selection knob plus dedicated keys, and a large transflective LCD
display (320 x 240 pixels; view area 122 x 92 mm).
. Optional internal thermal printer 58 mm wide or external thermal printer 112 mm wide.
. Huge recording capability: 256 Mb (typically 500 results).
. Capability to transfer results directly to an USB pen drive
. USB and RS232 interface for data communication with the PC.
. Two driving coil circuits (O+C); 4 optionally available. The coil current is independently
measured on all outputs, with three current ranges.
. Three sets of two main contact sensing circuits (two chambers tests); optionally, three sets of four
or six main contact sensing circuits (four or six chambers test).
. Capability of controlling up to four test sets, for tests of CB’s with up to 24 chambers per phase.
. Test of the main contact and of the pre-insertion resistor.
. Four auxiliary input circuits; optionally, 8 or 12.
. For the main and event inputs, measurement of delays with respect to coil currents or other
references.
. The Open or Closed state of main and event inputs is displayed by a light: thanks to these lights,
the status of the circuit breaker is continuously monitored.
. Eight analog input measurement circuits, to be selected among the following:
- Coil current measurement: minimum 2, maximum 4;
- Two high AC or DC voltage measurement: up to 500 V DC or 350 V AC, for the measurement of
the standby battery or of the motor supply;
- Four low DC voltage measurement inputs, for the measurement of position transducers stroke and
speed, or of the pressure, or other low-level parameters.
. DC voltage source for potentiometer transducers polarization.
. One auxiliary relay output, programmable.
. Static resistance measurement; test current 200 A, 100 A or 20 A.
. Dynamic contact resistance test; test current 200 A, 100 A or 20 A.
. Many triggers can start the recording.
. Capability of generating or sensing a trigger, so that a number of units can operate at the
meantime.
. All possible test sequences are programmable.
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Doc. SIE10169 Rev. 13 Page 6 of 32
. Test result is shown on the display: it is possible to analyse, zoom and so on.
. Capability of storing and recalling both test settings and test results.
. The software TDMS (that operates with WINDOWS 2000 up) is included: it allows analysing test
results, adding notes, saving into a data base and so on. It allows also to store and recall test
settings.
. The external option BSG1000 allows to perform the test when the circuit breaker has both ends
connected to earth, thus maximizing the test safety; it allows also to test circuit breakers with a
graphite nozzle.
All circuits have been designed to ensure safe operation in the noisy environment of HV and MV
substations.
The instrument is housed in a transportable aluminium box, that is provided with removable cover
and handles for ease of transportation.
The following table lists he key new features of CBA2000 with respect to CBA1000.
PERFORMANCE
CBA2000
CBA1000
COIL DRIVING
CIRCUITS
2; 4 OPTIONAL
2; 4 OPTIONAL
MAIN CONTACT
INPUTS
3 GROUPS OF 2; OPTIONAL :3
GROUPS OF 4 or 3 GROUPS OF 6
3 GROUPS OF 2
MASTER-SLAVE
CONNECTION
ONE MASTER + 3 SLAVE
ONE MASTER + 3 SLAVE
AUXILIARY
INPUTS
2 GROUPS OF 2; OPTIONAL : 4
GROUPS OF 2 or 6 GROUPS OF 2
2 GROUPS OF 2
AUXILIARY
OUTPUT
ONE RELAY CONTACT : 8 A, 250 V
NOT AVAILABLE
ANALOG INPUTS
10 IN ALL:
- 2 (4) COIL CURRENTS;
- 1 CONTACT RESISTANCE
MEASUREMENT;
- 2 HIGH VOLTAGE, 500 V DC;
- 3 LOW VOLTAGE, 10 V DC.
6 IN ALL:
- 2 (OR 4) COIL CURRENTS;
- 1 UP TO 500 V DC;
- 1 UP TO 5 V DC.
Digital inputs option
3; RS422
NO
USB pen drive
YES
NO
DIMENSIONS
485 (W) * 365 (D) * 240 (H) mm
400 (W) * 300 (D) * 240 (H)
mm
WEIGHT
15 kg
10 kg
The following is the CBA2000 front panel.
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Doc. SIE10169 Rev. 13 Page 7 of 32
NOTE: WINDOWS is a trademark of MICROSOFT inc.
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Doc. SIE10169 Rev. 13 Page 8 of 32
2 CHARACTERISTICS
2.1 COIL DRIVING CIRCUITS
. Number of circuits: two; optionally four.
. Type of driver: electronic; it ensures superior timing control.
. Driver characteristic: 300 V DC max; 30 A DC max; 300 V AC max; 20 A AC max.
. Operating time accuracy: 0.025% of delay ± 50 us.
. Coil current ranges: 2.5; 10; 25 A full scale, user selectable.
. The coil current is measured by a dedicated circuit, which is enclosed in the test set, so that a
single connection is enough to connect the coil and to measure its current.
. Number of coil current measurement circuits: two (optionally four ).
. In case of four outputs, it is possible to select the single or multiple phase opening.
. Coil current measurement accuracy: 0.5% of the reading ± 0.1% of the selected range.
. Connection: via four (optionally eight or twelve) safety sockets.
. Outputs are isolated between them.
2.2 MAIN CONTACT INPUTS
. Number of main contact inputs: six in all (two per phase), divided in three groups of two each;
optionally twelve (four per phase), divided in six groups of two each, or 18, divided in 9 groups of
two each.
. Test of the main contact and of the pre-insertion resistor contact, selectable.
. The contact is CLOSED when the contact resistance is less than 10 Ohm.
. Pre-insertion resistor contact range: 20 Ohm to 10 kOhm.
. Contact test voltage: 24 V; test current: 50 mA.
. Each input group is isolated with respect to the others.
. Connection: via nine safety sockets (optionally eighteen or twenty seven safety sockets).
. When a main contact is closed, the corresponding light on the front panel turns on.
2.3 AUXILIARY INPUTS AND OUTPUTS
. Number of auxiliary inputs: four, divided in two groups of two each. Optionally, eight or twelve,
divided in four or six groups of two inputs.
. Each two inputs are isolated with respect to the others.
. Capability of testing dry contacts. Contact test voltage: 24 V; test current: 2 mA.
. Capability of testing wet contacts. Contact input voltage: 20 to 300 V; test current: 2 mA.
. Contact selection can be different on the groups.
. Connection: via six (optionally 12 or 18) safety sockets.
. When an auxiliary input is closed, the corresponding light on the front panel turns on
. One relay auxiliary output. Contact characteristics: 8 A, 250 V DC. The contact operation can be
timed with respect to test start.
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Doc. SIE10169 Rev. 13 Page 9 of 32
2.4 INPUTS TIMING
. Sample rate: from 20 kHz maximum, for recording up to 1s to 20 Hz, for recording up to 1s 1000
s. See the table below for more details.
. Resolution: 0.1 ms to 100 ms.
. Inputs timing accuracy: see the following table.
RANGE
FREQUENCY
RESOLUTION
ACCURACY
1 s
20000 Hz
0.1 ms
0.1 ms ± 0.025% of the reading
2 s
10000 Hz
0.2 ms
0.2 ms ± 0.025% of the reading
4 s
5000 Hz
0.4 ms
0.4 ms ± 0.025% of the reading
10 s
2000 Hz
1 ms
1 ms ± 0.025% of the reading
20 s
1000 Hz
2 ms
2 ms ± 0.025% of the reading
40 s
500 Hz
4 ms
4 ms ± 0.025% of the reading
100 s
200 Hz
10 ms
10 ms ± 0.025% of the reading
200 s
100 Hz
20 ms
20 ms ± 0.025% of the reading
400 s
50 Hz
50 ms
50 ms ± 0.025% of the reading
1000 s
20 Hz
100 ms
100 ms ± 0.025% of the reading
2.5 ANALOG INPUT
Number of analog inputs: ten in all, programmable. Common characteristics of analog inputs:
. Measurement resolution: 16 bit.
. Measurement accuracy: 0.5% of the reading ± 0.1% of the selected range.
. Impedance: more than 200 kOhm.
. Measurement sampling rate: 20 kHz max.
2.5.1 Coil currents
The two coil current measurements; optionally four, above described are included in the total of ten
analog channels.
2.5.2 High voltage analog inputs
. Number: two, with no common point.
. Input voltage ranges: ± 5 V; ± 50 V; ± 500 V DC (3.5; 35; 350 V AC), user selected. These ranges
allow measuring all AC and DC voltages.
. Connection: via four safety sockets.
2.5.3 Low voltage analog inputs
. Number: three plus one.
. For all of them, the input voltage range is ± 10 V.
. Three of them are for transducers measurements or for analog input measurements, and have the
same reference point; the fourth one is dedicated to the micro-Ohmmeter.
. For the three inputs, they can be used for position or pressure transducers, or for analog signal
measurements.
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Doc. SIE10169 Rev. 13 Page 10 of 32
When used with position transducers, the software allows the displaying of: positions, strokes,
speed (datum point). These measurements are defined by the position of the cursors. In this
instance, it is possible to input the transducer stroke, and to set the unit of measurement as
millimetres, degrees or inches.
When the transducer movement is 50% of the total transducer length, the position error is 1% of the
reading. The error is inversely proportional to the percentage of the transducer movement. When
datum points are 25% of the total transducer length, and the corresponding time is 10 ms, the speed
accuracy is 3%. The error is inversely proportional to the percentage of the transducer movement
and to the movement time.
. When used as analog inputs, the most important use is the monitoring of the secondary current of
an energized CB, to perform the first trip test, that is, the measurement of the Open delay while the
CB is in service. This test is very important to detect the delay caused by the friction, which sticks
the CB that has operated a long time without opening.
. Connection: three via three multi-pole connectors; the fourth one via a two-way shielded
connector.
. On the same connectors is available a polarizing voltage to supply linear position transducers.
. Voltage value: + 5 V; maximum output current 30 mA; minimum transducer resistance 170 Ohm.
The output has the same reference as the three low voltage analog inputs.
2.5.4 Digital transducers
The digital transducer input allows monitoring up to three digital transducers at the meantime.
. Maximum input frequency: 50 kHz;
. Interface: RS422;
. Accepted transducers: up to 5000 impulses per turn.
. Connection: by the same three multi-pole connectors used for the analog inputs.
2.6 TIME MEASUREMENT TRIGGERS
The following time measurement trigger options are user selectable:
. Internal: the time measurement starts as the first Open or Close coil command is issued by the
driving circuit. Timing accuracy: 50 µs.
. Coil current: the time measurement starts as soon as the first Open or Close coil current exceeds
the selected percentage, from 1% to 30%, of the selected current range.
. Auxiliary input: the time measurement starts when the selected auxiliary input turns ON or
changes its state. The trigger can be performed also on a logical combination of auxiliary inputs.
. Analog input: the time measurement starts when the analog input level crosses (greater than, lower
than) the selected threshold.
. External trigger. The test set features a Trigger Out output and a Trigger In input, that allow
synchronizing up to 4 CBA2000’s. In this mode, one CBA2000 acts as the Master unit; its Trigger
Out output will be connected to all other units, selected as Slave. As the Master starts the test, all
other Slave units will measure the timing on Main, auxiliary and analog inputs. Maximum timing
error: 100 us. This feature allows to test circuit breakers with more than two chambers per phase, or
to survey more than four auxiliary inputs, or to survey more than one analog input at a time.
2.7PROGRAMMABLE SEQUENCES
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Doc. SIE10169 Rev. 13 Page 11 of 32
The user can select the following Open and Close sequences:
. Open: the Open coil is driven. In case of four coils, the selected Open coil phase is driven.
. Close: the Close coil is driven.
. OC: In sequence, the Open and Close coils are driven. In case of four coils, the selected Open coil
phase is driven.
. CO: In sequence, the Close and Open coils are driven. In case of four coils, the selected Open coil
phase is driven.
. OCO: In sequence, the Open, the Close and then again the Open coils are driven. In case of four
coils, the first Open command is issued on the selected Open coil phase, while the second Open
command is issued on all coil phases.
Via the software, it is possible to repeat an OC or CO command up to 9999 times.
These sequences are also selected by means of a dedicated pushbutton; the selected sequence is
confirmed by an LED.
For all the above sequences, the user can program the following delays:
. Open command duration: range 10 ms to 10 s.
. Close command duration: range 10 ms to 10 s.
. Open to Close delay: delay range 10 ms to 199.990 s.
. Close to Open delay: delay range 10 ms to 199.990 s.
. Recording duration: range 10 ms to 199.990 s.
. After programming, it is possible to view on the display the sequence timing: this helps avoiding
programming errors.
OPEN
CLOSE
2.8 STATIC RESISTANCE MEASUREMENT (OPTIONAL)
This measurement is performed connecting CBA2000 to the test sample and measuring its
resistance. Test samples can be: joints, main contacts and so on. Main contacts resistance is
measured in the closed position.
. Test current, resistance measuring range, resolution and accuracy: see the table.
TEST
CURRENT
RESISTANCE
RANGE
RESOLUTION
ACCURACY
A
mOhm
μOhm
200
0.2
1
2 % of the reading ± 0.5% of the range
1
1
2 % of the reading ± 0.5% of the range
100
1
1
2 % of the reading ± 0.5% of the range
10
1
1 % of the reading ± 0.3% of the range
20
10
1
1 % of the reading ± 0.3% of the range
100
1
1 % of the reading ± 0.2% of the range
O DURATION
C DURATION
OC DELAY
CO DELAY
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