JJG 2085-1990 AC power metering instrument calibration system JJG2085-1990 standard download decompression password: www.bzxz.net
AC power metering instrument calibration is the procedure of transferring the national AC power standard step by step to AC power meters of various accuracy levels, AC standard power (single phase) and AC/DC power conversion standards and other AC power metering instruments to transfer electric power unit values.

AC power metering instrument verification system
J.IG 2085-1990
AC power metering instrument verification system
VerlticatdonSeheme ofeasurlag InstrumentsFur AC: Hower
JJG2085—1990
This meter verification system was approved by three technical experts on November 24, 1990, and was implemented in May 1991.
Drafting unit: China National Institute of Measuring Science The technical provisions of this meter verification system are responsible for the drafting unit: The main drafters of this verification system:
Zhang Deshi
Guideland
(China National Institute of Measuring Science)
(China National Institute of Measuring Science)
Keywords
Standard instruments
Measurement instruments
AC power meter verification system framework
AC power meter verification system
AC current metering protection The instrument calibration system is the national AC power basic science and technology base, which is used to transfer the AC power card meters (single-phase, active power, single-phase standard current power source) and AC/DC auxiliary power conversion standard instruments of various accuracy levels. This instrument is a special instrument for storing the value of AC power units. It is suitable for AC current 0.65~10A, AC power 9.1~1.U, frequency 4-150 [standard current and electric power measuring instruments only. The calibration procedure is for the first phase reactive power and three-phase stone power, except for the optical power meter. The calibration procedure is: 1 AC power meter standard. The metering instrument that maintains the national AC power standard and saves the AC power value is the main metering instrument. Its AC/DC power conversion comparator is used to maintain the national AC power standard. It mainly uses double-blooded hot wire materials of thermal transformer, and forms a typical bridge circuit of current power conversion and AC power conversion bridge circuit, commonly known as power level. Its measuring range is 0.05-10A, AC current 5A, work factor, 1-1.0, power 40.150Hz, uncertainty (3-10).
voltage divider is a multi-stage voltage divider, working range: 7.6-10.500V, frequency: 40-1500Hz, minimum uncertainty: better than [×10-. AC current transformer, working current range: 0.05-10A, frequency: 40-15000H, uncertainty (1:-2)X
DC standard voltage source and precision mathematical meter, uncertainty is better than ×10 standard current source and resistor working together, the current section is more effective, The total uncertainty is recorded in 1x
DC comparison only. The accuracy is not guaranteed = 11-, the resolution is 0.1V2. The range of the standard power measurement is: current 0.05~10A, voltage 7.5-600V, about 40--.5000H2. The power transmission number is 0.11.0. The total uncertainty is -(3~50)×105. The second standard measuring instrument
3 AC power measuring instrument must have an AC power meter, and the AC power source is converted to a standard power source. The total uncertainty is -(5~10)×10 and ( 2～5, ×10* two categories, the former * by the AC power reference device through direct comparison or treatment comparison method to transmit the value. The latter uncertainty = (25) × - only the instrument can be compared with the relative value of the previous one, and the instrument can be directly or filtered by the AC power reference to transmit the value. In order to ensure the reliability and consistency of the value transfer, the uncertainty of the weight standard instrument should be only one third of the maximum uncertainty of the instrument to be calibrated or transmitted, and the correction limit value of the instrument to ensure the uniformity of the value transfer. 3.1 AC standard auxiliary rate table
The current standard AC power table uses uncertainty to express the error. According to the measurement standard, it is divided into two categories: 8 = (5-10) X-- (2-5) × 10. The measurement will be used: self-flow (1.0510A, 7.560V, power factor 0.1-1.0, frequency 41-56
1500:1
3.2 AC standard power reduction source
The standard power is the current range of 0.1510A, the voltage range: 0.5.-600V, the power factor is 0.1. The C number is 40~15(0X01Iz: Output error rate uncertainty = (5--10) 10- and - (2-5) × 10-3.3 AC-DC power conversion standard solution
AC-DC power conversion standard instrument is called a thermoelectric converter, the uncertainty is set with the AC-DC conversion differential meter. Measurement range: current l0.05-10A, E port 0.5-6U0V, power rating 0.1-1., range 4150
A type of AC and DC converter is a deep type of AC and DC converter: the measurement frequency is the same as the above, the AC power is converted to true voltage: the input DC value is 1V, the uncertainty is set with the specified output value differential meter. The total uncertainty required for the conversion of AC and DC power is vertical = 5-10) × 10\= (25) 10
Three working measuring instruments
4 AC micro-power 1 is a metering instrument, according to the individual uncertainty, it is divided into = (1-5) × 10-* and \ (1~5) × 10 two types of AC power indicating meter basic error is divided into (1.: -0.5) level and (1.0-5. center) level two types of uncertainty - (1~5) × 10 ( 0.1-1.5; within a human: the standard quantity error can also be used for direct comparison or operation comparison. 1 level handover for this work measuring instrument verification or transfer door. 5 level safety current power 1. piece of measuring instrument month: individual certainty 2-(1~5)×10-profit (1.0一5.0) level handover single 1 as a measuring instrument of the same type of other prices use direct comparison method of course not bowl certainty = (15)1-year (0.1-0.5) level exchange rate The instrument is used for value transfer,
5 AC power working meter and there are many types of instruments, such as type, type, working principle, etc. The standard can be selected according to the actual situation and needs of the station. In order to ensure the uniformity of the value transfer, the uncertainty or level of the standard instrument should be lower than one tenth of the uncertainty or level. Otherwise, the error and correction value of the standard meter should be considered to ensure the quality of verification and value transfer.-
AC power working meter base instrument, which also includes various working agents, transmitters and attached examples, is mainly used for AC power measurement instruments or instruments, grades and uncertainties are in accordance with the provisions of the general working measuring instruments of the Division, 865
4-phase power meter calibration system standard! Long instrument calibration system is reported in the figure. The standard rate: 40151
is not equal to (5.-) 1U
Welcome to welcome you
Su standard work
Technique 41--1XHk
5 use stickers 01-
2 - (1 -10)×10
Standard work table
Temporary car: 41-15000Hh
≥~ (2. - 5) ×10 4
Special
matching attack rate table
+-(1.-5)x11bZxz.net
High real-time clock change
free rate: 10~150001 start
movement*number.1-1
&-(!.JG)AH-
comparison method
beat rate 0~15335
cause;U.1-1
=(x-5)1n
Bei Ling method
Main measurement
First - UUH
Dynamic rate: 1.1-1
#-:2-52×10-
Power production data service diagnosis and measurement
=(1 = 5) × 10 -i
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