ГЭТ 89-2008 (НИЛ 2201)
Standard name:
- ГЭТ 89-2008 State primary special standard of the unit of electrical voltage – volt – in the frequency range (10 ÷ 3·10^7) Hz
Type of measurement:
- Measurements of electrical and magnetic quantities
Structural division: name НИО\НИЛ:
- Research Laboratory of State Primary Standards in the Field of Measurements of Electrical Circuit Modes
Guardian Scientist:
- Shevtsov Vladimir Ivanovich, Candidate of Technical Sciences, Associate Professor
Year of creation:
- 1975
Year of re-confirmation:
- 2009
Operating principle:
The standard's operation is based on the method of comparing the root-mean-square value of alternating voltage with direct voltage at different times.
Composition of the standard:
- A set of thermoelectric voltage converters with additional resistors for a frequency range from 10 to 1 x 105 Hz and a voltage range from 0.1 to 1000 V;
- A set of thermoelectric voltage converters for a frequency range above 1 x 105 and up to 3 x 107 Hz and a voltage range from 0.1 to 30 V;
- A measure of direct voltage of 1 and 10 V;
- Dual-channel DC nanovoltmeter;
- Precision DC voltmeter with a range from 10 to 1000 V;
- Electronic frequency meter;
- Highly stable programmable DC and AC voltage sources.
Main metrological characteristics
| Name | Value |
|---|---|
| Estimated Unexcluded Systematic Reproduction Error | (1 x 10-6 - 3 x 10-5) relative units at voltage (0.1 – 1000) V in frequency range (10 - 1 x 105) Hz (3 x 10-5 - 3 x 10-4) relative units at voltage (0.1 – 30) V in the frequency range (1 105 - 3 107) Hz |
| Estimation of random error of unit reproduction | (3 10-7 - 5 10-6) rel. units at voltage (0.1 – 1000) V in the frequency range (10 - 1 105) Hz (5 10-6 - 5 10-5) rel. units at a voltage of (0.1 – 30) V in the frequency range of (1 105 - 3 107) Hz |
| Type A standard uncertainty | (3 x 10-7- 5 x 10-6) rel. units at voltage (0.1 – 1000) V in frequency range (10 - 1 x 105) Hz (5 x 10-6- 5 x 10-5) rel. units at voltage (0.1 – 30) V in frequency range (1 x 105 - 3 x 107) Hz |
| Type B standard uncertainty | (6 x 10-7 – 1.7 x 10-5) rel. units at voltage (0.1 – 1000) V in frequency range (10 - 1 x 105) Hz (1.7 x 10-5 – 1.7 x 10-4) rel. units at voltage (0.1 – 30) V in the frequency range (1 x 105 - 3 x 107) Hz |
| Total standard uncertainty | (6.7 x 10-7– 1.8 x 10-5) rel. units at voltage (0.1 – 1000) V in the frequency range (10 - 1 x 105) Hz (1.8 x 10-5 – 1.8 x 10-4) rel. units at a voltage of (0.1 – 30) V in the frequency range of (1 105 - 3 107) Hz |
| Expanded uncertainty with coverage factor k=2 | (1.3 x 10-6 – 3.6 x 10-5) rel. units at voltage (0.1 – 1000) V in the frequency range (10 - 1 x 105) Hz (3.6 x 10-5 – 3.6 x 10-4) rel. units at voltage (0.1 – 30) V in the frequency range (1 x 105 - 3 x 107) Hz |
Verification diagram:
- Heads the state verification scheme for measuring instruments of alternating electric voltage up to 1000 V in the frequency range from 1 10^-1 to 2 10^9 Hz
Scope of application:
- Electric Power and Energy-Saving Technologies;
- Instrumentation and Precision Engineering;
- Electronics, Space, and Defense Technologies;
Results of applying the standard:
Metrological support for AC voltage measurements:
- 16 secondary standards;
- About 300 first-class working standards;
- Over 1,000 second-class working standards.
The total number of measuring instruments traceable to ГЭТ 89-2008:
According to expert estimates, there are more than 100 million units – voltage calibrators, voltmeters, AC voltage measuring converters, etc.
Ensuring the uniformity of measurements, participation in the CIPM MRA program:
Comparisons: CCEM-K6.a, CCEM-K6.c, CCEM-K9, CCEM-K11. SMS lines: COOMET-EM-RU-00000KYB-1; COOMET-EM-RU-000007NN-1; COOMET-EM-RU-000007IP-2; COOMET-EM-RU-000007NO-1; COOMET-EM-RU-000007NP-1; COOMET-EM-RU-000007NQ-1; COOMET-EM-RU-00000KY7-1; COOMET-EM-RU-000007NP-1; COOMET-EM-RU-00000KYD-1; COOMET-EM-RU-00000KY9-1; COOMET-EM-RU-000007IQ-2.
Unique technical installations as part of the standard:
Thermoelectric Voltage Converter Kits
PHOTO:
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General appearance of the standard ГЭТ 88-2014