Some standard content:
Verification procedure for power frequency single-phase phasometer
JJG440—1986
Verification procedure for power frequency single-phase phasometer
Verificatina Ragalatinn
of suHz Single-phase EhagometerJJG440—1586
This verification regulation was approved by the State Bureau of Metrology on May 2, 1986, and took effect on April 1987. Responsible unit: Kuangzhou Provincial Bureau of Standards and Measurement Drafting unit: Anhui Provincial Institute of Metrology and Testing Technology The technical terms of this regulation shall be interpreted by the relevant units. The main person who revised this regulation:
Zhengguang Xu (Juzhou Provincial Testing Technology Research Institute) 4h5
Technical requirements··
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[ii) opening and dropping
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(iv) tilt impact
(v) normal fish plate properties
(vi) Yang Ni
-=) frequency sound shadow (VIII) Insulation test method: 1) Test method for insulation resistance; 2) Determination of inclination resistance; 3) AC compensation method; 4) Direct comparison method; 5) Polarity test; 6) Polarity gun check; 7) Damping determination
[VIII. Damping rate
1 IX. Damping rate measurement
1 Processing of control results and use of measurement
Appendix] Power frequency phase meter calibration system,
Appendix 2
Phase meter calibration method
Appendix 3
Phase meter calibration certificate format
Power frequency single-phase phase meter calibration procedure
Technical regulations apply to newly manufactured, used and repaired rated frequency 3UH z, calibration of single-phase phase meters (including potential phase meters and power factor meters) with an accuracy of 0.5 to 5.0. This regulation does not apply to digital phase meters, phase recording phase meters, phase compensation phase meters, non-industrial phase meters, three-phase phase meters and phase metering equipment of different types that are not in accordance with this regulation. Technical requirements
(I) Basic error
1 The phase meter used to refer to the phase angle difference between the current and voltage is called a phase angle meter, and its error is expressed as: 100% = 4-100%
In the formula; r-
Phase angle indication error expressed as a percentage of the reference value; Reference value of phase angle meter error: -90°
Phase angle indication (degrees):
Actual value of one phase (degrees).
The maximum allowable error of the phase angle meter at all scale divisions 1 shall not exceed the specified value in Table 1.
Phase angle meter standard code medical code medical code
Allowable basic error (%)
When the phase angle is 1 ()
2 The phase meter used to indicate the ratio of the active power change rate to the apparent power rate in the alternating current is called the power factor meter. Its error is shown in formula (2):
or: -
reaorr
cmbg-10%
rg doot
·0N%=C
The power factor indication value expressed as a percentage of the reference value: The basic principle of the power meter is to use =1:
Power factor indication value:
A power number actual indication value,
The error of the power factor meter on all scales shall not exceed the provisions of Table 2, *2
The power factor meter level
is ()
The following applies to the following:
±0 66
±0 0 dynamic
a scale part of the full exchange of external table small auxiliary rate meter graduation line position error: L
a power meter graduation line deviation required for the preset distance (m:m): L power meter scale part of the sub-line total length (mm:, use this method to express the error and the power factor table of the error is not passed through the specified value in Table 3: device 3
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3 when the phase half rise and level drop of a certain When the excitation value is set, the absolute value of the difference between the two indications of the phase meter is called the phase meter's rise and fall variation at the indicated value. The phase meter's rise and fall variation at the scale should not exceed the absolute value of the specified value in Table 1 or Table 2.
(III) Non-standard wide range
4 The basic error and rise and fall variation of the phase meter at rated voltage and 0%~[00% rated current shall comply with the provisions of Section (I) and Section (V) of this chapter. IV) Balanced color response
5 It is not applicable to the phase meter with organic zero position, especially the phase meter with mechanical zero position shall be measured with rated voltage. Voltage and 4-point rated current, when the phase meter is removed from the specified position to any direction, the change in its indication should not exceed % of the value specified in Table 2 or Table 2. (V) Terminal soft connection According to the terminal mark, the phase meter correctly indicates the voltage after or before the voltage, 6 (VI) Damping The damping time of the phase meter with a tension wire or a finger length greater than 150mm should not exceed 6s; the other phase meters have a time of 4s. Phase meters with a full rotation angle of less than 180 Phase meter, its mechanical stability should not exceed 1 year: the phase meter, its mechanical deflection should not exceed 25% of the full length of the scale. When the frequency of the AC product deviates from the corresponding voltage by % (K is the phase meter accuracy level), its change relative to the rated frequency exceeds the specified value in Table 1 or Table 2. The phase meter and its core circuits can withstand a test of 50H frequency, 21V positive AC output voltage, and 1mm duration. The flow path between the circuit and the industrial circuit should be able to withstand a test of 5m frequency, 60V positive AC voltage, and 1min open time. The ambient temperature during the test is 15-35°C, the humidity does not exceed 85%, the insulation of the components and the wiring should not be less than 20°C before measuring the insulation, the voltage is S0V, and the environmental conditions are the same as those in Article 9. [IX] Appearance || tt|| 11 The phase meter should not have defects such as torn scale, pollution, dim mirror, broken, bent pointer, cracked pads, loose cylinder, and shell inclusions that may cause false sense of measurement, so as to ensure that the meter meets the standards.
2. Standard conditionsbzxZ.net
The calibration of the basic error, increase of the group and the influence of the non-standard load on the meter shall be carried out under the specified test conditions. 12
This section includes:
13.1 The accessories of the meter shall be placed in a predetermined test environment in advance: make it the same as the ambient air temperature. 12. For the meter with regulated temperature, adjust the pointer to the correct position before preheating, and do not allow new adjustments during the subsequent calibration process.
12.3 For the meter equipped with a calibrator, adjust it to the correct position before calibration. The installed meter and its accessories shall be tested after the load is preheated for 15 minutes, and the meter and its accessories shall be connected or reconnected for a short time. 12.4
The meter and its accessories shall be connected to the load for a short time, and then the load shall be connected for calibration. Table 4
Solution
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Various effects should be adjusted in accordance with the provisions of Table 4.
Positionability
Neck selection
%-100%
Three inspection items
Light reception
2.0.2.5.0
0.5. 1.0. 1-5
Refer to prevention
Night source damage
13: For trial production and use of the mouth, the following items should be added: external inspection;
Determination of pre-inclined illumination;
Determination of basic error and rise and fall variation:
13.4 Non-fixed fish carrier has some corrections.
For the phase meter after the repair
14, in addition to the above-mentioned verification, the following additional verifications shall be made according to the repaired parts:
Determination of the phase meter:
Probability,
14.3 Determination of the rate effect:
14.4 Other measurements:
(General determination of the verification method
4 Verification method
15 Generally, according to the accuracy level of the meter to be tested, select the sample verification method according to the specifications in Table 5. Under the premise of ensuring the accuracy of the verification method, other verification methods are allowed to be adopted, and the values must be approved by the relevant metrology departments. 5
Verification method
Current compensation, positive power nine-phase comparison method
16 Use current compensation and orthogonal dynamic phase meter, the current and voltage of the meter to be tested should meet the following requirements:
16.1 Within 1 minute, the amplitude fluctuation of the current and voltage is not greater than (K/10)\(K is the phase accuracy level].
1%.2 Within half a minute, the period between the current and the voltage is less than 1%. The position fluctuation is not greater than 1 (K/10) 10.3 Within half a minute, the rate fluctuation should not be greater than ± (K/20)%. 1 When the direct comparison method is used to calibrate the meter, the power supply temperature is subject to the requirements of 16.2 and 15.3. 18 The amplitude and position adjustment equipment used at the time should be able to make smooth and continuous adjustments. The value of the combination of the calibration value should not exceed (K/10)%! The phase difference should not exceed (K/10! 19 Where necessary, the calibration equipment should be screened to eliminate the influence of phase leakage: 20 When calibrating multiple limit meters that share a calibration, the following methods can be used. 20.1 In general, all digital division lines of one range limit and single negative limit (called full test limit) and the remaining combination limit (called non-full test limit) are tested for violations of the four division lines Sufficient. These four scale lines: 20.1.11. Limit scale line:
20.1.2 Lower scale line:
20.1.3 In the full inspection limit calibration, a large error (algebraic error) occurs. Other scale lines: 2.1.4 In the full inspection micro-calibration, a minimum error (algebraic error) occurs and the scale line is destroyed. 20.2 According to requirements, it is also possible to calibrate several scale limits at the same time, and all scale limits are used as the test limits. 21 Phase meters with quadrant conversion switches can be calibrated in any of the following ways: 21.1 In general, for each scale limit in a quadrant, the multiple scale limit table shall be signed according to the provisions of 20. At the same time, for the scale limits of the adjacent quadrants in the quadrant, the scale limit shall be calibrated according to the regulations of the non-full inspection limit. 21.2 According to requirements: The resistance in a quadrant can be calibrated as multiple scale limits. Verification is carried out, and for all other objects, they are all under the full inspection limit, and are less than the full inspection limit. The requirements for the multi-limit phase table are also required:
22 For two scales with corresponding and dynamic factors, a scale defined in the book or a scale actually used is verified,
23 For a phase table with an external special shunt as an attached electric closure, its overall combination should be verified according to the multi-limit phase table,
24 For the position of the general point device, the large and small sensors should be excluded, and the phase extension should be verified, 25 When verifying the basic error and rise and fall variation of the phase table, each verified scale line is verified twice; the first phase level opens (or drops) to the scale line: the second phase line drops (or rises) to the scale line. 26 When the basic error and rise and fall variation of the phase are checked under non-constant load, the test is carried out with 10% rated voltage and 4% rated current at the following speed limit according to the relevant provisions: 26.1
circular. 2 In the test of 2 and 21, the minimum error algebraic value appears (the limit of the disk, the net tilt group influence measurement
For the phase meter with mechanical zero position, the frequency new influence measurement is carried out without the situation of the rush: the specific steps are as follows: 27.1 Put the meter to the specified position:
27.2 Adjust the zeroing solution in two sections so that the indicator points to zero: 27.3 The meter to be tested is tilted 5° in each direction forward, backward, left, and right in turn. Note the change of each indication to the factory specified position. 2, 44: The maximum change in the indication (absolute value: should not exceed 50% of the value specified in Table 1 or Table 2):
29, for mechanically non-stationary clothes, when powered on and sinking, the measurement of the influence of materials is carried out. The experimental requirements are as follows; 28.1 Place the meter under test in the specified position: 28.2 Pass 100% of the rated voltage and 40% of the rated current through the meter. Measure the phase so that the indicator indicates a certain scale of the test case, and use a standard instrument to measure the actual value of the position at this time; 28.3 Tilt the meter under test forward, backward, left and right by 5. In each tilting situation, adjust the phase so that the indicator remains on the original vertical line 1. Use a standard instrument to measure the actual phase value at that time, and get A, B, B3, and day respectively: 28.4 Calculate the change in the indication of each tilt: (4)
A -- B, B
The largest indication change (absolute value! Should not exceed the value specified in Table 1 or Table 2 by %. [III] AC compensation method
29 When using the AC compensation method to calibrate the phase difference, the selected device, standard and instrument should meet the requirements of Table 6. Table 6
Tested meter compensation
According to the separation level
Complete device training (minutes)
Verification of the old position difference
Reading data (minutes)
Net positive band time band number
Current mutual inductance accuracy, etc.
Performance to the difference (%)
To ()
5×107
± 0 05
Power factor table
30 port AC compensation method calibration table! As shown in the figure, according to the current and the current potential difference, the current is selected according to the current ratio; according to the aluminum cut test voltage and the AC potentiometer compensation voltage, select the instrument's ratio: under each position, the potential difference should be able to compensate for the measured voltage, and the actual value of the auxiliary voltage is not less than 50% of its upper limit value. The AC compensation method will meet the requirements of the device. The actual value is calculated by the following formula: org-1.3
Wherein:
Pole actual value:
AC potentiometer real axis indication
AC potentiometer real axis indication:
Power factor efficiency difference actual standard constant is calculated by the following formula: Medical AC compensation head line schematic
LS—2 dynamic electric standard meter: F. one transformer subtraction voltage selection: one excitation detection buckle meter; H one effective military meter:
Electricity: Electricity
—electricity meter; -—Source only
cosP.= c:[ 12
Wherein: s4,—-actual value of power factor
Note, the actual value of the alternating electrical property is shown in Table 6, and the actual value of the phase angle is calculated by the ancient method: l
Phase angle actual value:
AC potential difference - real axis indication;
AC potential difference - real axis indication:
The amplitude of each disk indication value is the algebraic sum of the positive value and the minimum value of each real axis disk. Setc
To compensate for the real axis disk angle error, the algebraic sum of the positive value should be introduced: To compensate for the imaginary axis disk angle error, the algebraic sum of the correction value should be introduced: According to the considered axis flat potential of the quadrant in which the timing is located: The axis zero position potential of the quadrant in which the timing is located is checked. (IV) Orthogonal power method
32. When the phase meter of the central receiving level 15 is verified by the stop power method, the selected standard meter and parts meet the requirements of the table
33. When the phase meter is verified by the orthogonal power method, the standard instruments and parts are connected as shown in Figure 2. The ink limits used are shown in Table 5. The steps are as follows:
33.1 The mother limit of each standard instrument and part is specified in 8: K is matched with the new tens: 33.2 Connection verification The harm is to seek interest in accordance with the regulations;
The two power supply phases, indicating near 0 (also available as W, indicating at the maximum value! Group K, Xie L amplitude and phase more ~ indicating rate: adjust, make W indicating equal to: record the indicating value IuV in A without W, indicating value Pmu file) Table 7
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disconnect K rotation phase 00, make W, first fog: select the amplitude of the section gram, building A, Y billion hold this eoa long section R change W display but P one P): adjust the village position back to [°, trapped K. 33.4-33.7 steps, reverse the adjustment book, until at a certain R, and R, 33.8
value, under the same conditions:
33.8.1 When the center points to zero, W points to the school
33.8.2 When the power S=f is stored in the dosage form, P=m, the following steps are not repeated,
33. The small double village is used, and the error is displayed on the desired scale line (at this time there is no wild precision to maintain AV shock music)
Read W and W, the display value P, dynamic P scale)
33.10 The actual value control formula 11 3 Calculation:
dynamic factor constant value I (12 calculation:
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37 Determine the limit of the phase table with mechanical shaking degree, and proceed as follows: Large
(capacity)
37.1 The meter to be inspected Pass rated current and power: adjust the phase so that the indicator can point to the base digital scale line 1 near the center of the scale:
37.2, keep the power supply unchanged, cut off the voltage transmission line, and after the indicator stops at zero position, reconnect the voltage supply circuit, and start the stopwatch at the same time, measure the time from this time to the indicator entering the specified area (not more than 1% of the total length of the scale after the stop) and not leaving the area again, which is the meter blocking time; 37.3 While measuring the blocking time, read the indicator's deflection and the deflection after compensation. Calculate the stable deflection according to formula (13):
_t mr-10.100%
one-time rated value: temporary):
maximum deflection (mm);
deflection after stability: m:
full length of the scale part (mm)
3After measuring the phase resistance of the inorganic shock army, connect the seat as follows; t3
pass the rated current and voltage through the meter, and the voltage should be adjusted (roughly) to the source to record (small: 6.1
position: adjustable power building rejection, The position indicator points to a certain digital line near the center of the scale. 1. 38, press the phase adjustment button back, and the indicator will point to the upper (or lower) limit of the scale. Keep the indicator stationary, quickly adjust the phase adjustment knob to the original half-maximum (or minimum) setting, and start the meter. Measure the time required for the indicator to reach the specified area (that is, 1% of the total length of the scale after the stop) and no longer move out of the area, which is the meter's three-way interval: 471
The position indicator is at a certain digital line near the center of the scale. 1.:38, press the phase adjustment knob to turn it back on, and the indicator will indicate the upper (or lower) limit. Keep the indicator stationary, and quickly adjust the phase adjustment knob to the original half-maximum (or minimum) setting, which is called the start-up meter. The time required for the indicator to reach the specified area (that is, 1% of the total length of the scale after the position change) and no longer appear in this area is the three-way interval of the meter: 471
The position indicator is at a certain digital line near the center of the scale. 1.:38, press the phase adjustment knob to turn it back on, and the indicator will indicate the upper (or lower) limit. Keep the indicator stationary, and quickly adjust the phase adjustment knob to the original half-maximum (or minimum) setting, which is called the start-up meter. The time required for the indicator to reach the specified area (that is, 1% of the total length of the scale after the position change) and no longer appear in this area is the three-way interval of the meter: 47
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