ISA CBA1000 User Manual

DATE: 18/01/2011 DOC.SIE10166 REV.10

CIRCUIT BREAKER ANALYZER

AND MICROOHMMETER

MOD. CBA1000

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Doc. SIE10166 Rev. 10 Page 2 of 28

REVISIONS

SUMMARY

VISA

N

PAGE

DATE

1

All

22/07/2005

Preliminary issue

Lodi.

2

All

01/06/2006

Issued

Lodi

3

13

03/07/2006

Added the description of the DC loss test option

Lodi

4

15,16

13/04/2007

BSG option detailed

Puricelli

5

15, 16, 17

1/10/2007

Completed the BSG1000 option description

Lodi

6

17

7/11/2007

BSG1000 option description revised

Puricelli

7

15

12/12/2007

Auxiliary cable length corrected to 6 m

Lodi

8

13

30/09/2008

Added the 70 V MTC option and the long

connection cables option

Lodi

9

26-

15/03/2009

Modified to FW revision 2.19

Lodi

10

23

18/1/2011

Improved the clamp specification; added

pictures

Lodi

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Doc. SIE10166 Rev. 10 Page 3 of 28

APPLICABLE STANDARDS ......................................................................................................................................... 4

1 INTRODUCTION ....................................................................................................................................................... 5

2 CHARACTERISTICS ................................................................................................................................................ 7

2.1 COIL DRIVING CIRCUITS ............................................................................................................................................ 7

2.2 MAIN CONTACT INPUTS ............................................................................................................................................. 7

2.3 AUXILIARY INPUTS ................................................................................................................................................... 7

2.4 INPUTS TIMING ........................................................................................................................................................... 7

2.5 ANALOG INPUT .......................................................................................................................................................... 8

2.5.1 High voltage analog input ................................................................................................................................ 8

2.5.2 Low voltage analog input .................................................................................................................................. 8

2.6 TIME MEASUREMENT TRIGGERS ................................................................................................................................. 8

2.7 PROGRAMMABLE SEQUENCES .................................................................................................................................... 9

2.8 STATIC RESISTANCE MEASUREMENT (OPTIONAL)................................................................................................. 10

2.9 DYNAMIC RESISTANCE MEASUREMENT (OPTIONAL) ............................................................................................ 10

2.10 TEST SET CONTROL ................................................................................................................................................ 11

2.11 PC SOFTWARE ........................................................................................................................................................ 11

2.12 MENU SELECTIONS ................................................................................................................................................ 11

2.13 OTHER CHARACTERISTICS ..................................................................................................................................... 12

3 OPTIONS .................................................................................................................................................................... 13

3.1 STATIC AND DYNAMIC RESISTANCE MEASUREMENT, CODE PII23166. ..................................................................... 13

3.2 FOUR COIL COMMANDS, CODE PII43166. ................................................................................................................. 13

3.3 INTERNAL PRINTER, CODE PII33166. ....................................................................................................................... 13

3.4 EXTERNAL PRINTER, CODE PII14102. ...................................................................................................................... 13

3.5 MINIMUM TRIP COIL TEST. ...................................................................................................................................... 13

3.6 TEST SET CODES WITH OPTIONS. .............................................................................................................................. 14

3.7 CONNECTION CABLES, BASIC SET. ............................................................................................................................ 14

3.8 LONG CONNECTION CABLES SET. ............................................................................................................................. 18

3.9 TRANSIT CASE, CODE PII18166. ............................................................................................................................... 18

3.10 SOFT PROTECTION BAG, CODE PII19166. ............................................................................................................... 19

3.11 DOUBLE EARTH TESTER BSG1000, CODES PII21166 AND PII22166. ..................................................................... 19

3.12 TRANSDUCERS. ................................................................................................................................ ...................... 22

3.13 HALL EFFECT CLIP-ON TRANSFORMER, CODE PII29166. ........................................................................................ 23

4 PROTECTIONS ........................................................................................................................................................ 24

APPENDIX A: MENU SELECTIONS ......................................................................................................................... 25

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Doc. SIE10166 Rev. 10 Page 4 of 28

APPLICABLE S TANDARDS

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:

- Isolation resistance: > 2 MOhm.

- Earth resistance : < 0.1 Ohm.

- Dielectric rigidity 1.4 kV AC, 1 minute.

- Inputs/outputs protection: IP 2X - EN60529.

- Operating temperature: 0 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.

- Dispersion current: less than 5 mA.

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Doc. SIE10166 Rev. 10 Page 5 of 28

1 INTRODUCTI ON

The circuit breaker analyzer and microOhmmeter model CBA1000 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: 128 Mb (typically 250 results).
. USB and RS232 interface for data communication with the PC.
. Two driving coil circuits (O+C); 4 opt. The coil current is independently measured on all outputs,
with three current ranges.
. Three sets of two main contact sensing circuits (two chambers tests). Test of the main contact and
of the pre-insertion resistor.
. Four digital event input circuits.
. 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.
. Capability of controlling up to four test sets, for tests of CB’s with up to 8 chambers per phase.
. Two analog input circuits, low voltage and high voltage, with a voltage source for potentiometer
transducers polarization. Low voltage measurement is translated into stroke and speed. In
alternative, the input can measure the auxiliary DC voltage during circuit breaker operation.
. Static resistance measurement; test current 200 A, 100 A or 20A.
. Dynamic contact resistance test; test current 200 A, 100 A or 20A.
. Many triggers can start the recording.
. In case of more than two chambers per phase, capability of generating or sensing a trigger, so that
a number of units can operate at the meantime.
. All possible test sequences are programmable, including test cycling.
. 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 analyzing test
results, adding notes, saving 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.

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Doc. SIE10166 Rev. 10 Page 6 of 28

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 figure shows the CBA1000 front panel.

NOTE: WINDOWS is a trademark of MICROSOFT inc.

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Doc. SIE10166 Rev. 10 Page 7 of 28

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, or 300 V AC max; 20 V AC max.
. Operating time accuracy: 0.025% of delay ± 100 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) safety sockets.
. Outputs are isolated between them.

2.2 MAIN CONTACT INPUTS

. Number of main contact inputs: six in all, divided in three 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: 30 Ohm to 10 kOhm.
. Contact test voltage: 24 V. Main contact test current: 50 mA.
. Each input group is isolated with respect to the others.
. Connection: via nine safety sockets.
. When a main contact is closed, the corresponding light on the front panel turns on.

2.3 AUXILIARY INPUTS

. Number of auxiliary inputs: four, divided in two groups of two each.
. Each input group is isolated with respect to the other.
. 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 two groups.
. Connection: via six safety sockets.
. When an auxiliary input is closed, the corresponding light on the front panel turns on.

2.4 INPUTS TIMING

. Sample rate: 20 kHz maximum for recording up to 1s; 2kHz for recordings from 1 to 10 s; 200Hz
for recordings up to 100s; 100Hz up to 200s.
. Resolution: 0.1 ms to 1 s.
. Inputs timing accuracy: see the following table

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Doc. SIE10166 Rev. 10 Page 8 of 28

RANGE

FREQUENCY

ACCURACY

1 s

20000 Hz

0.1 ms ± 0.025% of the reading

2 s

10000 Hz

0.2 ms ± 0.025% of the reading

4 s

5000 Hz

0.4 ms ± 0.025% of the reading

10 s

2000 Hz

1 ms ± 0.025% of the reading

20 s

1000 Hz

2 ms ± 0.025% of the reading

40 s

500 Hz

4 ms ± 0.025% of the reading

100 s

200 Hz

10 ms ± 0.025% of the reading

200 s

100 Hz

20 ms ± 0.025% of the reading

400 s

50 Hz

40 ms ± 0.025% of the reading

1000 s

20 Hz

100 ms ± 0.025% of the reading

2.5 ANALOG INPUT

. Number of analog inputs: Two, high voltage and low voltage, isolated between them..

2.5.1 High voltage analog input

. 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.
. Analog input measurement resolution: 16 bit.
. Analog input measurement accuracy: 0.5% of the reading ± 0.1% of the selected range, for DC
inputs: 1 % of the reading ± 0.2% of the selected range, for AC inputs.
. Analog input impedance: more than 200 kOhm.
. Analog input measurement sampling rate: 20 kHz max.
. Connection: via two safety sockets for the input, plus two safety sockets for the polarizing voltage.

2.5.2 Low voltage analog input

. Input voltage range: ± 5 V.
. Analog input measurement resolution: 16 bit.
. Analog input measurement accuracy: 0.5% of the reading ± 0.1% of the selected range.
. Analog input impedance: more than 200 kOhm.
. Analog input measurement sampling rate: 20 kHz max.
. Availability of a polarizing voltage to supply linear position transducers. Voltage value: - 5 V;
maximum output current 5 mA; minimum transducer resistance 1 kOhm. The output is isolated
from other circuits.
. When the input is used with a position transducer, the software allows displaying: 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
millimeters, degrees or inches.
. Connection: via a shielded connector for the input, and two safety sockets for the polarizing
voltage.

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.

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Doc. SIE10166 Rev. 10 Page 9 of 28

. 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 CBA1000’s. In this mode, one CBA1000 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.

2.7 PROGRAMMABLE SEQUENCES

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.
. Two times recording. In this mode, the measurement is performed in two steps, separated by a
pause: this avoids loosing the timing resolution of the part of interest. It is possible to program a
first recording duration, then a pause, then the second recording duration.
. After programming, it is possible to view on the display the sequence timing: this helps avoiding
programming errors.

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