ГЭТ 143-85 (НИЛ 2202)
Standard name:
- ГЭТ 143-85 State primary standard of the unit of loss angle
Type of measurement:
- Measurements of electrical and magnetic quantities
Structural division: name НИО\НИЛ:
- Research Laboratory of State Standards in the Field of Measurement of Electrical Circuit Parameters
Guardian Scientist:
- Klionsky Mark Danilovich, Ph.D.
Year of creation:
- 1985
Year of re-confirmation:
- 1985
Operating principle:
The standard is based on a method for reproducing the unit loss angle and the numerically equal unit loss tangent using plane-parallel and cross-electrode systems. A plane-parallel system utilizes a nearly linear dependence of the loss angle on the interelectrode capacitance, while a cross-electrode system (assuming it is symmetrical) utilizes a near-zero sum of the loss angles of the cross-electrodes.
Composition of the standard:
- МПЭ-1 electrode system; КМЕ-101 capacitance measure;
- МГПЭ-1 transformer bridge comparator
Verification diagram:
- Heads the state verification scheme for loss tangent measuring instruments
Scope of application:
- Creation and production of materials for micro- and nanoelectronics;
- Electronic, space, and defense technologies;
- Electric power engineering;
- Instrument engineering, etc.
Results of applying the standard:
The accuracy of loss tangent measurements in the country has been increased by an order of magnitude; secondary standards have been certified, allowing for the production of loss tangent measures; tests have been conducted to approve the type of precision meters with a loss tangent error of 1 10-5 (a cable industry requirement).
The total number of measuring instruments traceable to ГЭТ 10-2023:
Tens of thousands.
Ensuring the uniformity of measurements, participation in the CIPM MRA program:
8
Unique technical installations as part of the standard:
The electrode system has design features that reduce the effect of capacitive leakage on the housing, which reduced the standard's НСП to a few units of the seventh digit. (Invention Certificate No. 1107656, B.I. 45, 1986). The cross-electrode system made it possible to establish a starting (zero) point within the range of reproducible loss angle values (Invention Certificate No. 1259874, B.I. 35, 1986). The uniqueness of the developed devices brought the country to a global metrological level and remains relevant to this day.
PHOTO:
/Image.jpg)