JB/T 10435-2004 Cable partial discharge test system verification method
Some standard content:
C529.06C.01
Machinery Industry Standard of the People's Republic of China
JB/T 10435-2004
Inspection methods for partial discharge testing systerm of electric cables2004-03-12Issued
Implemented on 2004-08-01
Issued by the National Development and Reform Commission of the People's Republic of China
Technical requirements and verification date
3.2 Technical requirements
Damage determination device
Avoidance determination method
Inspection of power supply for cable rear wave electric test deviceTest voltage output minimum value The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. The power supply has a relatively large circuit. T104352004
This standard is formulated for the second time,
This standard is proposed by the Shandong Xitao Machinery Industry Federation, Foreword
This standard is under the jurisdiction of the National Electric Wire and Electric Hybrid Standardization Technical Committee, and the originator of this standard is: Tuhai Cable Research Institute. The main drafters of this standard are: Zhu Bing, Shi Hongxin, Cha Jianhui, Liu Ju, Fang Junhaosu JB/T104352004
Cable partial discharge test system verification method JE/T10435-2 D04
This standard specifies the verification items and technical requirements for the cable partial discharge test system, the verification equipment, the verification method and the verification results and processing. This standard applies to the verification of the cable partial discharge test system. This standard applies to the verification of the newly manufactured, modified and in-use relay partial discharge test system. 2 Technical terms and definitions
The following terms and definitions apply to this standard. 2.1
Cable partial discharge test system partial DLS charge testing aystem of electric cables is suitable for the complete circuit of cable high partial discharge test. The test system is composed of the test device (test bag), including the circuit from the power supply to the rear discharge tester for indicating the current quantity, and any components that affect the circuit. The rear partial discharge test system must not be explicitly shown, but the connection method is not limited to the figure! Other connection methods that can be used for partial discharge test systems can also be used.
Upper number AC power supply: V-- High voltage voltmeter: High measuring resistance D-- Detector:
C. Relay, Ca
Electrohydraulic instrument:
Combined electric product:
Calibration requires attention to capacitance.
National 1 Cable Partial Discharge Test System 22
Test power supply tolerance tojrrancesafthetextsupply When the test voltage lasts for 3s, the difference between the specified value and the case value is within the specified time parameter, defined as the time interval between 10% of the calibration pulse and 90% of the calibration pulse before and after the calibration pulse (below). 2.4
Calibration pulse tail thetailafthecalibration pulse tail is the effective tail of the calibration pulse at the specified time parameter, defined as the interval between 10% of the calibration pulse before and after the calibration pulse (below). JB/I104352004
Sensitivity of partial discharge test system The sensitivity of test circuits and iron structure for the testing system of partial discharges
The sensitivity of a partial discharge test system refers to the smallest detectable pulse effect when there is interference. Is its effect value the best on the list? Times.
Linearity of partial discharge tester The degree of nearness of instrument for linearizing of partial discharges
The linearity of partial discharge tester refers to the degree of consistency between the displayed charge of partial discharge tester and the calibration charge, 2.7
Linearity error of partial discharge tester The linearity error of measured or partial discharges
The linearity error of partial discharge tester refers to the maximum deviation between the displayed charge of partial discharge tester and the calibration charge, usually expressed in percentage,
Measurement uncertainty Measurement uncertainty is a parameter that characterizes the dispersion of the value reasonably expected to be measured: a parameter related to the measurement result. 3 Verification items and technical requirements
3.1 Verification items
a) Composition of test equipment:
b) Test power supply of test equipment
\test equipment test output indication error: d) Detection sensitivity of partial discharge of test device: e) Verification of charge and pulse shape of discharge calibrator of test device; 1) Verification of linearity of partial discharge filter; 1) Inspection of reduction coefficient of partial discharge test system; 1) Inspection of partial discharge measurement or system response (or drawing of double pulse curve) 3.2 Technical requirements
3.2.1 Composition of test equipment
The test equipment shall at least consist of a commercial voltage power supply, two ammeters, measuring circuits, discharge calibrator, partial discharge detector, etc. If necessary, a receiving laboratory shall be provided. The local effective discharge tester should have a "zero mark" or "peak mark" when necessary. 3.2.2 Test power supply of the test device
3.2.2.1 The power supply of the cable partial discharge test device should be a wave-free and interference-free 50 sine wave power supply. Its frequency is .50 + 7
For laboratories with a relatively low-power environment, a dedicated power supply is independently drawn from the power transformer main unit, and after low-voltage filtering, it is introduced into the laboratory. 3.2.22 The ratio of the peak value of the power supply waveform of the cable partial discharge test device to the installed value is V2 (1 ± 5%). 3.2.2.3 The capacitance of the test power supply of the cable partial discharge test device is 3%. 3.2.3 Test device The indication error of the test voltage output indication value The indication error of the test voltage output indication value of the cable partial discharge test monitoring device is 3% 3.2.4 The sensitivity of the test device partial discharge detection meter The local emergency detection sensitivity of the cable partial discharge test device should be better than 5pC: 3.2.5 The charge quantity and pulse waveform of the test device mutual discharge quantity controller T810435-2004
The charge quantity controller error of the partial discharge test device is 30%~, +10%, and the calibration pulse duration is not more than 0.1s, and its liquid tail is not less than 00us. The calibration pulse repetition frequency is less than S, 3.2.6 The linearity of the effective current tester should not differ from the linearity of the visual inspection or instrument by more than 10%. 4. Verification equipment: a) High and low voltmeter: (0--30) kV, the division value is 0.1 kV, the measurement uncertainty should not be more than 1%; b) Digital multimeter: the frequency range is (0-20) kHz, the division value is 0.1 Hz, the measurement uncertainty should not be more than 10%; d) Memory oscilloscope, the frequency response is not less than 100 MHz, the sensitivity is not less than 1 mdiv, the measurement uncertainty is greater than 1%; Digital capacitance meter: the measurement uncertainty should not be greater than 1 single pulse 9) Double pulse correction generator:
5 Verification method
5.1 Discharge inspection
5.1.1 Check whether the assembly or composition of the cable partial discharge test device meets the requirements of 3.2.1. 5.1.2 Whether the partial discharge tester has "zero mark" or "reduced mark" shall comply with the requirements of 3.21. When the whole cable partial discharge test system is close to the number of degrees, and any judgment can meet the requirements of 3.2.4, there is no "zero mark" or "bee mark". 5.2 Inspection of the power supply of the partial discharge test device 5.2.1 Inspection of the working frequency of the test power supply
5.21.1 Use a power waveform analyzer to measure the power supply frequency. Connect the voltage divider of the high voltage voltmeter to the high voltage output terminal, and connect the power supply waveform to the low voltage end of the voltage divider. Read the value from the power waveform analyzer. It should meet the requirements of 3.2.2! 5.2.1.2 Use the rated frequency of the digital voltmeter to the low positive terminal of the high voltage voltmeter divider to measure the power supply frequency. It should meet the requirements of 5.2.21. 5.2.2 Check the peak coefficient of the test power waveform 5.2.2.1 Use a power waveform analyzer to measure the peak coefficient of the test power waveform. Connect the high voltage voltmeter to the voltage divider, and connect the power waveform analyzer to the low voltage end of the voltage divider. At the six voltage values of 10%, 20%, 30%, 70%, 90% of the high voltage output, read the value from the power waveform analyzer. It should meet the requirements of 3.2.2.2. 5.2.2.2 You can use a voltage divider with a positive voltage meter to connect it to the high voltage power supply terminal, and the high voltage outputs can be 11%, 2%, 30%, 70%, 0%, and 90%. For these six voltages, the voltmeter measures the effective value and peak value of each point. The coefficient S of the test power waveform value is calculated as follows: 3.2.2.2: S
The peak value of the test voltage during the test is V: - The effective voltage measured by the test voltage meter is in V. 5.2.3 Verification of the power supply tolerance of the test device
Check the tolerance of the test power supply under its maximum test limit with a local effective test cable. It meets the requirements of 3.2.2.3. 5.3 Verification of the test voltage input indication value
Press the voltage divider of the high-voltage dry voltmeter to the high-voltage power supply input terminal, and use a dial-type instrument. When the indicating instrument is 1. It is recommended to have a digital scale [JA/T 10435—2004
Qiao, dial test: For digital single meter, the voltage value on the small meter is n·5kV (=1, 2, 3,) and the unit is V: The unit is V: The unit is V. The unit is V. The unit is V. The unit is V. The unit is V. The unit is V. The unit is V. The unit is V. The unit is V. The unit is V: The voltage value on the small meter is n·5kV (=1, 2, 3,) and the unit is V. The unit is V: The unit is V. The unit is V. The unit is V: The unit is V. The unit is V. The unit is V: The voltage value on the small meter is n·5kV (=1, 2, 3,) and the voltage value on the small meter are n·5kV (=1, 2, 3,) and the voltage value on the small meter are n·5kV (=1, 2, 3,
5.4 Check of partial discharge detection sensitivity of partial discharge test device (2)
5.4.1 Quickly summarize the voltage level of the partial discharge test device measured by the system, inject 10pC (or 20pC) into the system, adjust the gain of the test effect of the same part so that the discharge meter of the partial discharge tester indicates 10pC (or 20pC): 5.4.2 Turn on the system power supply, connect the system with a test voltage of not more than 70-100V (70-100V) to the test line, increase the voltage to the test voltage specified in the relay product standard, and check the effectiveness of the test device. 5.4.3 The detection sensitivity of the partial discharge test device is 4mm-2kA
Where:
u—Partial discharge test device detection Sensitivity (the minimum discharge detected by the instrument), unit is pCt-
, the unit is 11;-calibration coefficient, unit is pCmu
, where:
, the unit is D:
k=4eda
, after the calibration panel is pressed, the readout value on the oscilloscope is D. Under any conditions, the detection sensitivity of the partial discharge test device shall comply with the provisions of 3.2.4. 3.5 Verification of the internal discharge calibrator of the cable partial discharge test device 3.5.1 Verification of the low voltage calibration device 5.5.1.1 Open the cover of the effective discharge calibrator, find the detection end of the calibration pulse, and use a memory oscilloscope to measure the pulse short value of the discharge calibrator. 5.5.12 Open the cover of the discharge calibrator, find out the injected capacitance Cm1 between the output end of the calibration pulse and the output end of the discharge calibrator. If necessary, remove the injected capacitance C from the calibrator for measurement. 5.5.2 Verification of high voltage calibration
5.5.2.1 On the partial discharge tester, project the output end of the calibration pulse, use the memory indicator to observe the value of the positive discharge pulse and the rising edge of the calibration pulse at p, and the repetition rate of the calibration pulse. 5.5.2.2 Use a digital meter to measure the capacitance Cm5.5.3 Injection charge of the discharge calibrator. The injected charge of the discharge calibrator is calculated using the formula 4um=CA
Partial discharge test equipment The detection value of the calibration pulse, the unit is pC: Ceal
The injected capacitance of the calibrator, the unit is PF
4-Calibration pulse value: the unit is V
The calibration pulse's rising edge, source and frequency of the calibration pulse shall be adjusted as required by 3.2.5
5.6 Inspection of partial discharge test receiver JB/T10435-2004
5.6.1 Single pulse calibration with 30x file, for partial discharge tester, then set the value to 0C, 4:2pIpc respectively, and then reduce the value to 4pC, 22C respectively, and then use the 10pC file of the standard partial discharge tester. 1p risk information part of the discharge test of the harmonic meter. 5.8.3 Sichuan or the annual discharge period or the linearity of the meter, the result is in accordance with 2.2.0. j u-91 00%
Wu Zhong;
a use part of the discharge test without the need for the code, need: than the part of the discharge test operation of this discharge meter also change the indication value, the unit is product: a-calibration method mountain electricity, the unit is p
5.7 high part of the discharge test system rate reduction number of inspection 6
5.7.1 will be connected to the source and the part of the test equipment on the 5.72 will be single pulse calibration transmitter control pulse from the port of the two injection people: close to the measurement end - people measured frozen number 1 from the high measurement full injection people: then get the approximate reading: then:,it, when, F=i.
a,a j. -ia-.
Attached herewith:
min=2 yuan h,F
Partial discharge test: maintenance test sensitivity (the smallest effective voltage that the instrument can detect): unit: one wave discharge meter reading low, single as mmLk-. -Standard coefficient, single as pcmm.
F Attenuation coefficient
5.B Partial discharge test system response (or double pulse curve control) test 5.B.1 Because the tester's working power is not high, the internal discharge is still slow, and the effective voltage pulse generation is higher than the industry, resulting in obvious errors, giving the partial discharge test system measurement of the forbidden area for the long-term supply of the power, 5.82 will be connected to the city to reduce the effective voltage test system, between the near end of the power and the ground, control the double pulse correction generator, and place the double pulse series interval from 0.2s to K reading step by step, and record the same time correspondingly. The discharge amount of the discharge code test is as follows: A()
5.8.3 Define A-1U as A(two output A/A100-function curve. A/4:0%. 1.0 is the negative imposed area, and the corresponding installation length is the restricted area
6 Processing of verification results
6.1 A verification certificate is issued to the partial discharge test system that has passed the qualified standards, and a verification result pass is issued to the unqualified one. 6.2 For the verification items conducted according to 5.7 and 5.8, the certificate only gives the test data. 63 The verification cycle is generally one year.3 Test of power supply tolerance of test device
Check the tolerance of the test power supply under the maximum test limit of the cable test device, and meet the requirements of 3.2.2.3. 5.3 Verification of test voltage output indication value
Press the voltage divider of the high-voltage dry voltmeter to the input end of the high-voltage power supply, and dial the voltage value on the indicating instrument. 1. Digital scale thermoelectric [JA/T 10435-2004
is recommended. For digital meters, dial the voltage value on the indicating instrument n·5kV (=1, 2, 3,) to perform verification. The error of the test voltage output indication of the local effective discharge test device is calculated by the above formula, and shall meet the requirements of 3.2.3. 65-u
The test voltage output indication error of the local effective discharge test device is %-the reading of the meter on the partial discharge test device, the unit is V: the reading of the high-voltage meter is the whole, the unit is V.
5.4 Check of partial discharge detection sensitivity of partial discharge test device (2)
5.4.1 Quickly summarize the voltage level of the partial discharge test device measured by the system, inject 10pC (or 20pC) into the system, adjust the gain of the test effect of the same part so that the discharge meter of the partial discharge tester indicates 10pC (or 20pC): 5.4.2 Turn on the system power supply, connect the system with a test voltage of not more than 70-100V (70-100V) to the test line, increase the voltage to the test voltage specified in the relay product standard, and check the effectiveness of the test device. 5.4.3 The detection sensitivity of the partial discharge test device is 4mm-2kA
Where:
u—Partial discharge test device detection Sensitivity (the minimum discharge detected by the instrument), unit is pCt-
, the unit is 11;-calibration coefficient, unit is pCmu
, where:
, the unit is D:
k=4eda
, after the calibration panel is pressed, the readout value on the oscilloscope is D. Under any conditions, the detection sensitivity of the partial discharge test device shall comply with the provisions of 3.2.4. 3.5 Verification of the internal discharge calibrator of the cable partial discharge test device 3.5.1 Verification of the low voltage calibration device 5.5.1.1 Open the cover of the effective discharge calibrator, find the detection end of the calibration pulse, and use a memory oscilloscope to measure the pulse short value of the discharge calibrator. 5.5.12 Open the cover of the discharge calibrator, find out the injected capacitance Cm1 between the output end of the calibration pulse and the output end of the discharge calibrator. If necessary, remove the injected capacitance C from the calibrator for measurement. 5.5.2 Verification of high voltage calibration
5.5.2.1 On the partial discharge tester, project the output end of the calibration pulse, use the memory indicator to observe the value of the positive discharge pulse and the rising edge of the calibration pulse at p, and the repetition rate of the calibration pulse. 5.5.2.2 Use a digital meter to measure the capacitance Cm5.5.3 The injected charge of the discharge calibrator is calculated by the formula 4um=CAbzxZ.net
Partial discharge test equipment The detection value of the calibration pulse, the unit is pC: Ceal
The injected capacitance of the calibrator, the unit is PF
4-Calibration pulse value: the unit is V
The calibration pulse's rising edge, source and frequency of the calibration pulse shall be adjusted as required by 3.2.5
5.6 Inspection of partial discharge test receiver JB/T10435-2004
5.6.1 Single pulse calibration with 30x file, for partial discharge tester, then set the value to 0C, 4:2pIpc respectively, and then reduce the value to 4pC, 22C respectively, and then use the 10pC file of the standard partial discharge tester. 1p risk information part of the discharge test of the harmonic meter. 5.8.3 Sichuan or the annual discharge period or the linearity of the meter, the result is in accordance with 2.2.0. j u-91 00%
Wu Zhong;
a use part of the discharge test without the need for the code, need: than the part of the discharge test operation of this discharge meter also change the indication value, the unit is product: a-calibration method mountain electricity, the unit is p
5.7 high part of the discharge test system rate reduction number of inspection 6
5.7.1 will be connected to the source and the part of the test equipment on the 5.72 will be single pulse calibration transmitter control pulse from the port of the two injection people: close to the measurement end - people measured frozen number 1 from the high measurement full injection people: then get the approximate reading: then:,it, when, F=i.
a,a j. -ia-.
Attached herewith:
min=2 yuan h,F
Partial discharge test: maintenance test sensitivity (the smallest effective voltage that the instrument can detect): unit: one wave discharge meter reading low, single as mmLk-. -Standard coefficient, single as pcmm.
F Attenuation coefficient
5.B Partial discharge test system response (or double pulse curve control) test 5.B.1 Because the tester's working power is not high, the internal discharge is still slow, and the effective voltage pulse generation is higher than the industry, resulting in obvious errors, giving the partial discharge test system measurement of the forbidden area for the long-term supply of the power, 5.82 will be connected to the city to reduce the effective voltage test system, between the near end of the power and the ground, control the double pulse correction generator, and place the double pulse series interval from 0.2s to K reading step by step, and record the same time correspondingly. The discharge amount of the discharge code test is as follows: A()
5.8.3 Define A-1U as A(two output A/A100-function curve. A/4:0%. 1.0 is the negative imposition area, and the corresponding installation length is the restricted area
6 Processing of verification results
6.1 A verification certificate shall be issued to the partial discharge test system that has passed the qualified standards, and a verification result pass shall be issued to the unqualified ones. 6.2 For the verification items conducted according to 5.7 and 5.8, the certificate only gives the test data. 63 The verification cycle is generally one year.3 Test of power supply tolerance of test device
Check the tolerance of the test power supply under the maximum test limit of the cable test device, and meet the requirements of 3.2.2.3. 5.3 Verification of test voltage output indication value
Press the voltage divider of the high-voltage dry voltmeter to the input end of the high-voltage power supply, and dial the voltage value on the indicating instrument. 1. Digital scale thermoelectric [JA/T 10435-2004
is recommended. For digital meters, dial the voltage value on the indicating instrument n·5kV (=1, 2, 3,) to perform verification. The error of the test voltage output indication of the local effective discharge test device is calculated by the above formula, and shall meet the requirements of 3.2.3. 65-u
The test voltage output indication error of the local effective discharge test device is %-the reading of the meter on the partial discharge test device, the unit is V: the reading of the high-voltage meter is the whole, the unit is V.
5.4 Check of partial discharge detection sensitivity of partial discharge test device (2)
5.4.1 Quickly summarize the voltage level of the partial discharge test device measured by the system, inject 10pC (or 20pC) into the system, adjust the gain of the test effect of the same part so that the discharge meter of the partial discharge tester indicates 10pC (or 20pC): 5.4.2 Turn on the system power supply, connect the system with a test voltage of not more than 70-100V (70-100V) to the test line, increase the voltage to the test voltage specified in the relay product standard, and check the effectiveness of the test device. 5.4.3 The detection sensitivity of the partial discharge test device is 4mm-2kA
Where:
u—Partial discharge test device detection Sensitivity (the minimum discharge detected by the instrument), unit is pCt-
, the unit is 11;-calibration coefficient, unit is pCmu
, where:
, the unit is D:
k=4eda
, after the calibration panel is pressed, the readout value on the oscilloscope is D. Under any conditions, the detection sensitivity of the partial discharge test device shall comply with the provisions of 3.2.4. 3.5 Verification of the internal discharge calibrator of the cable partial discharge test device 3.5.1 Verification of the low voltage calibration device 5.5.1.1 Open the cover of the effective discharge calibrator, find the detection end of the calibration pulse, and use a memory oscilloscope to measure the pulse short value of the discharge calibrator. 5.5.12 Open the cover of the discharge calibrator, find out the injected capacitance Cm1 between the output end of the calibration pulse and the output end of the discharge calibrator. If necessary, remove the injected capacitance C from the calibrator for measurement. 5.5.2 Verification of high voltage calibration
5.5.2.1 On the partial discharge tester, project the output end of the calibration pulse, use the memory indicator to observe the value of the positive discharge pulse and the rising edge of the calibration pulse at p, and the repetition rate of the calibration pulse. 5.5.2.2 Use a digital meter to measure the capacitance Cm5.5.3 Injection charge of the discharge calibrator. The injected charge of the discharge calibrator is calculated using the formula 4um=CA
Partial discharge test equipment The detection value of the calibration pulse, the unit is pC: Ceal
The injected capacitance of the calibrator, the unit is PF
4-Calibration pulse value: the unit is V
The calibration pulse's rising edge, source and frequency of the calibration pulse shall be adjusted as required by 3.2.5
5.6 Inspection of partial discharge test receiver JB/T10435-2004
5.6.1 Single pulse calibration with 30x file, for partial discharge tester, then set the value to 0C, 4:2pIpc respectively, and then reduce the value to 4pC, 22C respectively, and then use the 10pC file of the standard partial discharge tester. 1p risk information part of the discharge test of the harmonic meter. 5.8.3 Sichuan or the annual discharge period or the linearity of the meter, the result is in accordance with 2.2.0. j u-91 00%
Wu Zhong;
a use part of the discharge test without the need for the code, need: than the part of the discharge test operation of this discharge meter also change the indication value, the unit is product: a-calibration method mountain electricity, the unit is p
5.7 high part of the discharge test system rate reduction number of inspection 6
5.7.1 will be connected to the source and the part of the test equipment on the 5.72 will be single pulse calibration transmitter control pulse from the port of the two injection people: close to the measurement end - people measured frozen number 1 from the high measurement full injection people: then get the approximate reading: then:,it, when, F=i.
a,a j. -ia-.
Attached herewith:
min=2 yuan h,F
Partial discharge test: maintenance test sensitivity (the smallest effective voltage that the instrument can detect): unit: one wave discharge meter reading low, single as mmLk-. -Standard coefficient, single as pcmm.
F Attenuation coefficient
5.B Partial discharge test system response (or double pulse curve control) test 5.B.1 Because the tester's working power is not high, the internal discharge is still slow, and the effective voltage pulse generation is higher than the industry, resulting in obvious errors, giving the partial discharge test system measurement of the forbidden area for the long-term supply of the power, 5.82 will be connected to the city to reduce the effective voltage test system, between the near end of the power and the ground, control the double pulse correction generator, and place the double pulse series interval from 0.2s to K reading step by step, and record the same time correspondingly. The discharge amount of the discharge code test is as follows: A()
5.8.3 Define A-1U as A(two output A/A100-function curve. A/4:0%. 1.0 is the negative imposed area, and the corresponding installation length is the restricted area
6 Processing of verification results
6.1 A verification certificate is issued to the partial discharge test system that has passed the qualified standards, and a verification result pass is issued to the unqualified one. 6.2 For the verification items conducted according to 5.7 and 5.8, the certificate only gives the test data. 63 The verification cycle is generally one year.2. Verification of high voltage calibration
5.5.2.1 On the partial discharge tester, at the output end where the calibration pulse is projected, use a memory display to observe the positive value of the discharge signal and the rise time of the calibration pulse at p, and the repetition rate of the calibration pulse. 5.5.2.2 Use a digital meter to measure the capacitance Cm5.5.3 The injected charge of the discharge calibrator. The injected charge of the partial discharge test device is calculated using the formula 4um=CA
The effective calibration capacitance detected by the partial discharge test device, in units of pC: Ceal
The injected capacitance of the calibrator, in units of PF
4. Verification impulse value: in units of V
The effective charge calibrator used in the partial discharge test device has a micro error, and the calibration pulse The frequency of the uplink, source and calibration pulses shall be adjusted as much as possible, and the requirements of 3.2.5 shall be met. 5.6 Inspection of the partial discharge test receiver JB/T10435-2004 5.6.1 Monthly single-charge calibration, the partial discharge tester shall be lightly calibrated, and then the partial discharge tester shall be adjusted to 0C, 4:2pIpc, and the partial discharge tester shall be marked with the 10pC setting of the meter, and then the partial discharge tester shall be marked with 4pC, 22C. 1p, and the harmonic indication of the meter shall be shown. 5.8.3 The linearity of the meter shall be improved after the discharge period or the design period, and the performance shall meet 2.2.0. j u-91 00%
Wu Zhong;
One part discharge test does not require: the part discharge test also changes the indication value of the table, the unit is: a-calibration method, the unit is p
5.7 High-efficiency test system inspection 6
5.7.1 Connect the source to the part of the test equipment 5.72 Connect the single pulse calibration transmitter to the two ports of the power supply: close to the measuring end - when the measured value is 1, the reading is about: then:,it, when, F=i.
a,a j. -ia-.
Attached herewith:
min=2 yuan h,F
Partial discharge test: maintenance test sensitivity (the smallest effective voltage that the instrument can detect): unit: one wave discharge meter reading low, single as mmLk-. -Standard coefficient, single as pcmm.
F Attenuation coefficient
5.B Partial discharge test system response (or double pulse curve control) test 5.B.1 Because the tester's working power is not high, the internal discharge is still slow, and the effective voltage pulse generation is higher than the industry, resulting in obvious errors, giving the partial discharge test system measurement of the forbidden area for the long-term supply of the power, 5.82 will be connected to the city to reduce the effective voltage test system, between the near end of the power and the ground, control the double pulse correction generator, and place the double pulse series interval from 0.2s to K reading step by step, and record the same time correspondingly. The discharge amount of the discharge code test is as follows: A()
5.8.3 Define A-1U as A(two output A/A100-function curve. A/4:0%. 1.0 is the negative imposed area, and the corresponding installation length is the restricted area
6 Processing of verification results
6.1 A verification certificate is issued to the partial discharge test system that has passed the qualified standards, and a verification result pass is issued to the unqualified one. 6.2 For the verification items conducted according to 5.7 and 5.8, the certificate only gives the test data. 63 The verification cycle is generally one year.2. Verification of high voltage calibration
5.5.2.1 On the partial discharge tester, at the output end where the calibration pulse is projected, use a memory display to observe the positive value of the discharge signal and the rise time of the calibration pulse at p, and the repetition rate of the calibration pulse. 5.5.2.2 Use a digital meter to measure the capacitance Cm5.5.3 The injected charge of the discharge calibrator. The injected charge of the partial discharge test device is calculated using the formula 4um=CA
The effective calibration capacitance detected by the partial discharge test device, in units of pC: Ceal
The injected capacitance of the calibrator, in units of PF
4. Verification impulse value: in units of V
The effective charge calibrator used in the partial discharge test device has a micro error, and the calibration pulse The frequency of the uplink, source and calibration pulses shall be adjusted as much as possible, and the requirements of 3.2.5 shall be met. 5.6 Inspection of the partial discharge test receiver JB/T10435-2004 5.6.1 Monthly single-charge calibration, the partial discharge tester shall be lightly calibrated, and then the partial discharge tester shall be adjusted to 0C, 4:2pIpc, and the partial discharge tester shall be marked with the 10pC setting of the meter, and then the partial discharge tester shall be marked with 4pC, 22C. 1p, and the harmonic indication of the meter shall be shown. 5.8.3 The linearity of the meter shall be improved after the discharge period or the design period, and the performance shall meet 2.2.0. j u-91 00%
Wu Zhong;
One part discharge test does not require: the part discharge test also changes the indication value of the table, the unit is: a-calibration method, the unit is p
5.7 High-efficiency test system inspection 6
5.7.1 Connect the source to the part of the test equipment 5.72 Connect the single pulse calibration transmitter to the two ports of the power supply: close to the measuring end - when the measured value is 1, the reading is about: then:,it, when, F=i.
a,a j. -ia-.
Attached herewith:
min=2 yuan h,F
Partial discharge test: maintenance test sensitivity (the smallest effective voltage that the instrument can detect): unit: one wave discharge meter reading low, single as mmLk-. -Standard coefficient, single as pcmm.
F Attenuation coefficient
5.B Partial discharge test system response (or double pulse curve control) test 5.B.1 Because the tester's working power is not high, the internal discharge is still slow, and the effective voltage pulse generation is higher than the industry, resulting in obvious errors, giving the partial discharge test system measurement of the forbidden area for the long-term supply of the power, 5.82 will be connected to the city to reduce the effective voltage test system, between the near end of the power and the ground, control the double pulse correction generator, and place the double pulse series interval from 0.2s to K reading step by step, and record the same time correspondingly. The discharge amount of the discharge code test is as follows: A()
5.8.3 Define A-1U as A(two output A/A100-function curve. A/4:0%. 1.0 is the negative imposed area, and the corresponding installation length is the restricted area
6 Processing of verification results
6.1 A verification certificate is issued to the partial discharge test system that has passed the qualified standards, and a verification result pass is issued to the unqualified one. 6.2 For the verification items conducted according to 5.7 and 5.8, the certificate only gives the test data. 63 The verification cycle is generally one year.
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