ZKY-2000 vacuum Tester

One, overview

Vacuum circuit breaker is widely used in high-voltage electrical power system, the core of vacuum interrupter parts are, as the interrupter is a vacuum as a working basis, so it's not like oil switch, SF6 switch as easily determine its quality. Traditionally, users determine the arc-quenching Chamber of vacuum of vacuum circuit breaker power frequency withstand voltage is the method method, this method can only roughly assess the vacuum interrupter of deterioration.

ZKY-2000 vacuum vacuum interrupter Tester is identification of vacuum equipment, mainly by single-chip computer control unit, test process is completely automated. The sampling design of the instrument changed uses peak current calibration methods, and Ionic charge is used to do the calibration. In this way, effectively instantaneous power disturbance during the test, the test is stable and reliable. As a result of the computer main control unit, the instrument can be conveniently deducted leakage currents due to environmental factors. This instrument most highlight of features is: achieved has vacuum out arc room of from demolition measurement, directly displayed vacuum degrees value, makes vacuum circuit breaker device user detailed master out arc room of vacuum State, for has plans to replaced out arc room provides has reliable of according to, for grid of security run provides has powerful guarantees, overcome has workers frequency resistance pressure method only can judge out arc room whether scrap of defects.

This instrument provides high accuracy, easy to operate, easy to carry, strong anti-jamming ability, especially suitable for power supply unit tests is the production of vacuum circuit breaker, installation, commissioning and maintenance one of the necessary equipment.

The second, measuring principle

Two contact interrupter stood some distance, applying high voltage pulse, and residual gas molecule ionization, the ion current and residual gas density is proportional to the vacuum. For different vacuum tube, under the same conditions of vacuum and ion current is not the same size, when sensing a ion current through vacuum ion current curve, done automatically by the computer calculation of the vacuum, and vacuum value is displayed.

Third, technical parameters

1. vacuum measuring ranges: 9.999x10-1~ 1x10-5

2. Ion current measurement range: 9.999x10-1~ 1x10-7

3. measuring error: < 5%

4. measuring resolution: 10-5pa

5. permitted ambient temperature:-20 ℃ ~ 50 ℃

6. air humidity: ≤ 80%RH

7. power supply: AC 220V, 50Hz ± 10%

8. overall dimension: 420x290x210 (mm)

9. high voltage output: pulse ≤ 30kV15kHz

⒑ weight: 8kg

Four, use method

(1) this instrument consists of two applications:

1, used in arc-quenching Chamber of vacuum interrupter production line quality control, circuit breaker manufacturer interrupter inspection.

2, used to detect installed in the vacuum interrupter switch machine on the vacuum. These tests are mainly used

In the electricity sector of the routine maintenance and capacity testing to judge capacity vacuum interrupter.

(2) connections:

Interrupter contacts, power lines and signal input line interrupter the moving and static end. Note that the power lines should be hung up

Note: before using the instrument must be well grounded!. Check the cables correctly to boot.

The instrument's power when turned on, screen display menu as shown below:

(3) tube type options:

When measuring, first select the type, the instrument has been deposited in a variety of types of pipe, specific parameters, see appendix table.

1, type select operation mode:

Press (select button) so (◢ ◢) to select a test tube, (confirmation button), use [+ key] or [-key] adjust the type parameters, when the monitor display consistent with the type code of the desired measurement will be available, press the (confirmation), return to the main menu. If no measurements are given in the manual of the tube type, similar size, connection tubes of the same type to replace it.

2,

Press (select button) make (◢ ◢) to test vacuum tubes 'Pa', press the (confirm) instrument is in measuring State. And automate all measurement, calculation, display the whole process.

3, printed:

If you want to print data, press (confirmation button) to return to the main menu, press (select button) make (◢ ◢) to print the test data, and then press (print), all measured data can be printed.

4, the parameters if there is no alternative, you can press (select button) make (◢ ◢) points to 'A', which can be given direct ionization current, generally speaking. Ionization current (a) vacuum (Pa) small 2 orders of magnitude.

Six, hardware configuration

ZKY-hardware is divided into four parts

1, CPU control unit

This part to receive user instructions display control display, the pulse signal required to produce high voltage unit, control unit and magnetron current issue control commands, responsible for the whole timing control of measurement processes, which are the subject of the whole system.

2, high voltage control board

HV sended control signal power amplifier with a certain duty, driving high voltage transformers, resulting in the high pressure required to measure.

3, keys and display panel

Key is used for user instructions, control keys at different status of the instrument.

Display is used to display various system parameters.

4, the printer

For print output the measured parameters, print the results as shown below:

TESTED BUIC-Ⅲ TESTED BYUC-Ⅲ

PRESSURE: 3.260E-5Pa CURRENT: 2.621E-6A

(Vacuum) (Current value)

TUBE NO: (tube number) TUBE NO: (tube number)

TUBE TYPE: (tube type) TUBE TYPE: (tube type)

DATE: (date) DATE: (date)

TEST REPORT TEST REPORT

(Record) (Record)

Seven, usage considerations

1, the instruments is a precision instrument, PCB density, general store in a dry place. If conditions are wet, you should always power up.

2, if the displayed current value to zero after the test, you should review the interrupter's surface is clean. Because the surface is not clean can make changes in leakage value is greater than the ionization current value, so that after the measuring value minus leakage is less than zero, is sentenced to zero by instrument. After this happens, the interrupter's surface wiped clean, do the test again, hopefully get value of vacuum was accurate.

3, when using high voltage output lines must not touch the human body to electric shock.

4, when the high voltage indicator light, do not touch high voltage cable to electric shock.

5, disassembly the printer paper in the instrument case of a power failure, so as to avoid damage to the printer. For paper Shi, will front Board open, with index finger and thumb pinch tight printer ends of two clip tablets gently drag out printer, resorted to paper mouth is slightly higher than instrument panel, but cannot drag out distance too big, will new paper port part cut into pointed-like, insert printer of into paper mouth, open instrument power switch, by Xia print key, makes paper from printer of top out of a distance, insert Panel export sewing export. Cover Panel of the printer, paper is complete.

6, this instrument has no user-serviceable parts, such as a failed, professional service, or contact the supplier, do not open instrument, so as to avoid accident or causing unnecessary losses.

7, the instrument vacuum measuring ranges between 9.999x10-1~ 1x10-5 Ionic current measurement range between 9.999x10-1~ 1x10-7 when tube vacuum degree greater than 10-2Pa or Ionic current is greater than 500uA recommendations scrap the vacuum tube.

8, if the vacuum pressure is equal to atmospheric pressure (vacuum tube breakage), within the scope of this instrument, the instrument detection is rejected, return to their initial state.

(Note: after the breakdown, the instrument may not appear properly, in which case the instrument back to normal after the new boot, the instrument is not to work extraordinary hours.)

VIII, annex

1, a 2 high voltage output lines, signal input line

3, 5A fuses two 4, power cord

5, manual

Appendix

1, JB 3855-1996

For Assembly of the vacuum interrupter Chamber of vacuum circuit breaker gas pressure should be less than 1.33x10-3Pa;

2, DL 403-91

Within the validity of the provisions of the use of, the vacuum switch tube shall not exceed 6.6x10-2Pa.