Some standard content:
L3C621.314214
National Standard of the People's Republic of China
GB 9091-88
Inductive voltage dividers
Issued on April 25, 1988
National Standard Issued on January 1, 1989
Implementation of National Standard of the People's Republic of China
Inductive voltage divider
Ioductile voltage divider
This standard is equivalent to the International Electrotechnical Commission IEC18-1 Inductive voltage divider》1 Scope of application
UDC.621314
GB 9091-8
This standard applies to inductive voltage dividers that provide an accurate AC current ratio within a certain frequency range and are used under output load conditions.
, This standard does not apply to any auxiliary equipment used with voltage dividers. Note: A voltage divider is a device that supplies power to the load for a certain period of time. It should comply with the relevant regulations of GB1207-66 "voltage divider".
In some voltage dividers, the last voltage divider (least significant bit) of the voltage divider is resistive. 2. Terms and definitions
This standard specifies the following definitions:
2.1 Voltage divider and voltage divider Divider (abbreviation [} is a device composed of one or more transformers connected inversely to each other, which makes the output voltage of the device equal to a selected ratio of the value of the electric current,
in the past: Zhongning VD\ includes the so-called "fast voltage divider", "transformer type divider", "slow inductive voltage divider" and "ratio transformer". The main characteristics of the voltage divider are shown in the appendix.
The characteristics of some natural voltage dividers (the group of overpressure protection and loss protection should be greatly improved by using this device. If the impedance of the shaft and the error of the inductive voltage divider are reduced, this type of voltage divider is called a "secondary inductive voltage divider". 2.2 Transfer ratio ser||tt| |The ratio of the open circuit output voltage of the voltage divider to its input voltage complex quantity (phasor) 2.2.1 Nominal transfer ratio The ratio of the open circuit output voltage indicated by the switch step or its selected ratio method to the input voltage: This ratio is the number of times set by the compensation micrometer or similar indication of the circuit. 2.3 Base value fiducialalue
is the reference value used to specify the accuracy of the inductive divider. The base value of the inductive divider is t, which is equivalent to (or should be equivalent to) the transfer ratio when the open circuit voltage is equal to the input voltage,
24 Transfer ratio error Lrunsfer rario crror The value obtained by subtracting the actual transfer ratio from the measured transfer ratio. When the transfer ratio error is expressed as a ratio of the base value, because the base value is !, its digits remain unchanged. ① The heat transfer ratio error () is a function of the phase difference () and the positive difference (). In this standard, only this correction value is used. The model mathematical form of the transfer ratio error is: le-Vt
(Appendix A)
The model of the transfer ratio error can be expressed as a white fraction of the standard value [%], or a white fraction (P) of the base value. These standard values are compared with the values of the National Machinery Industry Committee on April 6, 1988, approved on January 1, 1989. The scientific notation table of the field (see Section 3 and 1). GB 909188
24.1 Basic transfer ratio error The transfer ratio error determined under reference conditions is: z.5 Input impedance range
2.s.1 Test impedance range aput impedanceoIhe impedance winding Under specified conditions, when the output of the inductive voltage divider is switched on, the impedance it presents to the source is the impedance presented to the excitation stage of the independent field [the first stage of the inductive voltage divider, this The resistance control is a closely wound terminal resistance. When the voltage of the magnetic terminal group is in phase with the voltage at the beginning of the measured group, the recommended phase-to-phase resistance is not a part of the system. 2s.2 The iaputimnedanceofciaemagaoizingwindiag of the excitation winding is under the specified conditions. When the test group is excited by a current with the same amplitude and phase as the magnetic environment group, the secondary voltage divider excitation array is the current resistance. The measurement terminal group is the acid system group, but the self-resistance is not included. 2.6 out of impedance part of the object
Under the specified conditions, when the two ends of the inductive divider are twisted, the connecting wires can be slightly shorted to reduce the impedance of any load,
26.t maximum output resistance diagram maximumouiputretistance switch or its independent ratio two parts under any indication, the maximum value of the resistance limit L62 share of the vehicle inductance maximumoutnulinductane under a specific switching rate, the switch or When other ratio adjustment components are at any indication, the electrical impedance of the ratio adjustment components will also cause the corresponding maximum value to change. Note: This includes the input power, the original speed and the load limit, etc. These dangerous items are listed in the corresponding table with caution.
28 Variation variaiar
When a ratio takes two different values in turn, the difference between the actual value and the actual value is transmitted to a certain level. All other responses shall be maintained at their respective reference conditions. 29. Reference conditions The conditions under which the inductive divider meets the relevant actual transfer ratio error requirements are the conditions under which the inductive divider meets the relevant actual transfer ratio error requirements. 29.2 Reference range The specified numerical range of the inductive divider. Within this range, the inductive divider shall meet the relevant actual transfer ratio error requirements. 2a The range of numerical values that can be taken when the variation caused by the nominal value does not exceed the specified limits. 2.11 Limiting values of the nominal value ainJluencequantity does not cause the voltage divider to permanently change or no longer meet its accuracy level requirements.
212 Line insulation voltage (nominal line voltage) cincuit.insulatianveiltuge (noriralcirzgitnltigc) can be applied to any line of the inductive voltage divider, and there will be no dangerous voltage limit when the rated and closed voltage is adjusted. 2
GB9091-88
z.13 Common mode voltage common mode voltage exists separately or jointly (as specified) at the common input and output terminals and ground. Any voltage between the leakage current cutoff terminal or the electrostatic shield terminal group (if any), according to the specified connection method, when there is no common source between the input and output terminals, the common mode voltage is defined as the voltage between the specified circuits and the control domain,
2.14 DC mode voltage D.Cgeriesmade input current into the input tower.
2.15 Distortion coefficient: The ratio of the effective value of the harmonic component to the effective value of the non-positive component, 2.16 Electrostatic discharge · electrostatic screen A conductive outer coating used to protect the space surrounded by it from the influence of external static electricity 217 Leakage source shield Lakgeeurmentscrccm Two equal current traps that prevent the influence of positive current on the leakage current of the mother, Note: Extreme temperature sulfur shields are called protection 2.18aom
The ratio of the transmission ratio change of the minimum division value of the minimum step value or the lowest significant digit of the dial (the minimum step value or the lowest significant digit of the dial), 215 auxiliary equipment auxiliarycquipmcnt The additional equipment necessary to ensure that the inductive voltage divider works safely as specified, it may be or not an integral part of the voltage divider.
220 accuracy, accuracy
The accuracy of the voltage divider is determined by the limit of the model of the basic transmission ratio error and the limit of the variation of the model caused by the influencing factors (see Appendix A8):
Note: ① Accuracy can be defined as the model of the transmission ratio error (see Article 2.4). In fact, it is a single description of the actual error of the inductive divider. The accuracy of an inductive voltage divider may also be determined in part by the relative error component of the phase ratio. This method is not used in this standard and no requirements are given for it. However, it is useful to give the relative error component on the calibration certificate supplied to facilitate verification (see 812). z.20.1 Accuracy of inductive voltage dividers shall be graded. All inductive voltage dividers that meet all the requirements of this standard may be expressed in terms of a corresponding number:
2.20.2 Index
represents a number indicating the degree of accuracy. || tt||3 Classification"
Note: 1) The three methods mentioned above are also available. There is also a proposal to establish a flow on the four principles. Various sensors can be classified as follows according to the accuracy level defined in 2.20.1: 0.0000001: 0.0000002, 0.0000005. 0.000001. * 0.1. These values are expressed as a percentage of the base value
h0.001ppm, 0.002ppm, 0.005ppm, 0.01mpm1000ppm These values are expressed in pPm of the standard value:. I×10*, 2×10~ 5× 10-*, 1× 104, *, 1× 10-. This value must be expressed by a single digit multiplied by an integer of 10, etc. (teaching notation as an example of the reference value) The grade index of the inductive voltage divider can be expressed by any of these grading methods. Note: All grade indices are listed separately in the table! 3
0.000.0001
0,DC00002
9.I0Q 000 5
0.000 002
0.000 005
GB9091-88
Table 1 Basic transmission ratio error limit of the standard value expressed by the ratio of the basic transmission ratio error limit of the standard value
Basic error limit
: scientific notation
2 × 10-F
Ix IarT
2×15-
1×1g+
2×16-
Basic transmission increase ratio complete error root of the old model
±0.001D00 1
±0.0000005
±0.000.001
±0.000 002
±0.000:005
± 6.000.02
±0.000 05:
upper 0.0002
± 0.000 5
+-±10
± 200
. ± s00
±1000
Scientific notation
±1×10
±2×10+
±5×10°www.bzxz.net
±1×16?
±2×10㎡||tt ||±5×10
+2x10~
15×10~7
±1×10
±2×10-
.±5×10
±1x101
+5×1 01
±1×1
±5×10m
±Ix10~
If the manufacturer specifies the use: the lens selection and storage conditions are obtained, within one year from the inspection period at the time of delivery or another date agreed upon by the manufacturer (or the responsible supplier) and the user, the inductive disc voltage divider shall meet the relevant basic transfer ratio error limits specified by the respective accuracy levels,
method: for the inductive disc voltage divider, the transfer ratio is included in the characteristics after the characterization, and the delivery is not certified for one year. Therefore, the overall test shows that the ratio is basically related to time, but the ratio is restored due to careless use, or the core wire is replaced again at high temperature, or the DC current passes through the inductive disc voltage divider 4
CB 9091-88
iron core, or open the circuit to show too high a tolerance for the allowable error of the total electrode
When the inductive voltage divider is used under the reference conditions given in Table 2, the basic transmission error should exceed the value of the index of each level given in Table 1
4.2 Selectable ratios
All selectable transmission ratios should have the same accuracy level, unless otherwise specified. 5 Conditions for determining the basic error
51 The reference effect parameters and allowable deviations of the relevant influencing quantities are listed in Table 2. Table 2 Test conditions and allowable deviations of influencing quantities
AC common mode voltage
DC common mode voltage
Input voltage distortion factor
Reference conditions
(unless otherwise specified by the manufacturer)
Duration
10%~60%
Multiple test voltage
Permitted deviation per test time Difference 1,
1% of input bar pressure
"Average intensity level: The substitute test letter does not allow the difference
, 2) The factory can specify the range. According to GB7676.1-87 "Direct current analog indicating electric instrument and its parts, Part 9~: Standard communication requirements" from 20, 23 and 27.
3) The manufacturer specifies
4) This is suitable for the direct current output end of the peak 5.2 Before the test, the voltage divider is at the value of the influence quantity and has enough time to reach the specified state. 3 If necessary, the manufacturer shall specify the time for applying the voltage of the test. If there is a similar provision for the reception of the stimulus, the time shall be zero. The requirements specified in Article 7.2 shall be met. 5.4 If there is a leakage current screen, the manufacturer shall report the leakage current to the manufacturer. If there is a screen separated from the leakage current shield, it shall be grounded. If the external charge is conductive, it shall also be connected. 55 Any other necessary rate components shall be specified in the system! 6 Allowable variation
6.1 Limit of variation
GB9091-88
When the inductive divider works under the conditions listed in Table 2 and the basic influence quantity layer changes according to Article 6.2. The variation should not exceed the value specified in Table 3. Table 3 Nominal use range and allowable variation Relative distortion Input voltage AC long mode current DC mode current External voltage distortion factor Note: 1) See 7.1. 21 National regulations, 3) The maximum value is determined by the manufacturer. 6.2. Determine the recommended operating conditions. The nominal operating limit (unless otherwise specified by the manufacturer) will be within ±1.5 billion. 10%~75% of the perceptible E, 35% to 100% (select the smaller one). 0% and 100% of the implantable device. The risk is the permissible variation expressed as a percentage of the same value. 6.2.1 The variation shall be determined for each influencing quantity. During each test, all other influencing quantities shall be kept under reference conditions. 6.3.2 The variation shall be determined as follows: When a reference value is determined for an influencing quantity, the influencing quantity shall vary between this value and any value within the nominal operating range given in Table 3. |tt||b. When a reference range and a nominal application range are specified for the response base, the response plate shall vary between each extreme value of the reference range and any value within the adjacent nominal application range. 623 The manufacturer may specify the accuracy level under voltage and frequency combinations and non-combinations. 6.3 Variation caused by direct current
The test for determining the direct current response shall be carried out according to the manufacturer and user's requirements. 6.4 Variation caused by external field effects
When the specified nominal value is used as the test, the variation should not exceed the specified limit (Table 3) of the test device. The test device can be in accordance with the provisions of 3.5 of GB7676.9-87 "Applicable to the test model and its annex Part 9: Recommended test methods", or according to the agreement between the manufacturer and the user, other devices can also be used. It is recommended that the G
GRH91-88
actual! The ratio of the device is to generate a sufficient magnetic field. The ground in the medical field is the direct current of each direction in turn. When the reference frequency is used, the alternating current is required. In the latter case, the relationship between the current in the system and the inductive voltage divider input voltage should be within 360 domestically available
1 Additional electrical private machinery requirements
! The input voltage limit value
should not exceed any of the following two values, and the system should be in accordance with the actual situation! The maximum effective voltage is
. In the overtime, the allowable value of the power supply is proportional to the power factor or the power consumption, and can be calculated by the following formula: U=xf
or: U-effective value, V
-a power factor specified by the power system manufacturer:
F rated power, H;
7.2 Input voltage switching
7.2.1 Note that the correct level is 1×10-*, 1×10-(0.0001*, 0.1)(1ppm, **, 100Vppm should be divided into pressure, The input voltage waveform of the core shall be applied from above or reduced to half of the allowable value, and shall be able to withstand the switching of the core voltage without reducing its accuracy.
7.2.2 The inductance rating is 1×105×10-(0.0000001, *, 0.00005) (0.0W1Ppm, .., 0.5ppm). The manufacturer may specify a value smaller than half of the allowable input voltage. If this option is selected: the value is as shown in 1.2.1.
7.3 Voltage test and other safety requirements
The requirements for voltage test shall comply with the relevant provisions of G6738-86 "Safety requirements for measuring and recording instruments and accessories of measuring and recording instruments"
7.4 Continuous test
The system insulation group shall be at a voltage of 500V = 10% or line insulation voltage (nominal line voltage) ± 10% (take The higher of the two voltages should be lowered or no connection should be made between the two voltages. The measurement should be carried out between the voltages of 1~2m. 7S. Purchase, storage, operation and use limit of new inductors should be exposed to the environment of -0-+50℃ without damage. After the reference conditions are met, the inductor should still meet the requirements of the standard, unless otherwise specified by the manufacturer. The manufacturer should specify some additional The added limit conditions are required to ensure the integrity of the inductive voltage divider. 8 Data, markings and special numbers
&[.1 system! The data should be given in the following order:
, the manufacturer or the responsible person: the name or trademark of the express: b. The manufacturer or the responsible person shall specify the serial number, the accuracy is 1×1u, *-, 1×10(0.0001,, 0.1)(Pm,, 000m should be
, when he is broad and When the user has an agreement, the serial number can be omitted;
, nominal transfer ratio
, power:
9001-88
, test accuracy:
If it is different from the accuracy given in Table 3, the nominal use range of the accuracy shall be given; b.
Input voltage limit;
Test voltage:
Multiple test values of the rate [Fan Guo]
Nominal rate Scope of use:
Test voltage;
V value (see 7.1
Positive value, expressed in V/Hz (see 7.1b
Allowable switching value (see 7.22)
If necessary, give the test position calculation and standard use range. If necessary, give the basic integers of auxiliary equipment: line country: integral value of components and replaceable parts: under the test conditions, the integral impedance of the class: safe Under the conditions of the test, the input resistance of the magnetic field group (if appropriate) under the test conditions, the maximum value of the input current of the maximum current limit switch:
the maximum value of the external magnetic field;
the influence of the switch, if different from the values given in Table 2 or Table 3: the corresponding voltage value (range) and the nominal use range should be given:
the specific duration required to apply the voltage before the switch is excited (if it is not zero). 8.1.2 If the verification certificate is provided according to the agreement between the supplier and the user, it shall also include the following contents:
n. Transfer ratio calibration position and its non-taxable determination: b. Calibration date;
Calibration agency seal:
Main mark, symbol and independent
Marks and symbols should be full and not easily removed. The international system of units and its test pieces should be marked according to the guidelines specified in B3100 International System of Units and Its Application. If necessary, the symbols specified in Table 4 should be used.
GB9091-88
Table 4 Symbols for marking inductive partial pressure
(Some of these symbols are related to B7676.1 1) ||tt ||Zhou Wang Bai
The state of the voltage divider used is the same as the west
The voltage divider used should be level with the support
The store should use the voltage divider and the horizontal fabric
The sensitivity of the device is the same as 1-1. The nominal range is R0.[00
The voltage divider is indicated by D-2 symbols, and the nominal range is -+
The voltage divider changes to D-3 symbols to indicate the measured pressure
The standard is 45\75
The degree of regret is the same as that of the device
GR 9091—88
Continued Technical 4
The error indicated by the percentage of the standard is the relative index
The error indicated by the scientific notation is the relative index
1×t0)
The error indicated by the price can be expressed in the form of a corresponding index
such as ppm
The symbol
The document
is not required
. 2.1 The following contents should be indicated on the nameplate or multi-party (death 8.1.1): I. b, ci
dUse the symbols of E-1.R-5 or E-6 in Table 4gh,i.jk.n,o;
mReport (6738, adopt the symbols of C.1￥-3
Use the symbols of Table 4D-1-6,
In addition, the following marks and symbols shall be marked: "Secret voltage divider\Or use this name in other words: Symbol
When necessary, use the line number F-31 of Table 44 to indicate other important contents not given in other documents; mark the reference value and reference result For use, the following specifications shall be used for identification and FO
month.2.2 Each terminal pin shall be marked with an empty outlet. 0B9091-88
8.2.3 When adding internal wear, it can be shown on the chrome plate, shell or the documents provided. 8.3 Documents provided
8.3.1 The document shall state:
Operation method:
Steps to determine compliance with the performance requirements of this standard; when necessary, the introduction and maintenance
8.3.2 The document shall also state the following in 8.1.1: a. h, C, e, f. l, n, o, pr S t. u, y, w, x, y. 3.3 When providing the verification certificate related to Article 8.1.2, it shall state: a, b, in Article 8.1.1; a in Article 8.1.2. b, c, where the voltage divider markings include
inductive voltage divider
1×105
0.2V/Hz200V300V
[EHz. ..-, 20khz
10c,.20r, 26c.45t
80°,90°100
The above notation gives the following:
the inductive voltage divider model ARCD, serial number 12345, manufactured by NN; b. the reference numeral is 1×10-* (can be replaced by 0.001 or 10pmm); e. the constant K is 0.2V/1Iz:
. The zero voltage is 200V. The maximum value of the input voltage is 00V. The rated frequency is 1k. The nominal frequency range is 1-10k. Model ABC
The temperature range of the seat is 20~26℃, the nominal use range is from 10~45℃ (these values are different from those given in Table 7 and Table 3, the marked
1, the position symbol (D-4) indicates the reference position is perpendicular to the support, and its nominal use range is 10" vertical line around the system: the line end is absolutely equal to the reverse music [nominal I voltage) of the close voltage divider, should be able to withstand the voltage test of V (see GH6738)
adopts the following:
1) 1EC6!8-78 "Energy Control Divider" has k.1.1 years, b, c, compared with 198: years of positive increase, use
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