SOURCE FOR A POWER SUPPLY OF MEASURING SYSTEMS IN LABORATORY |
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| Vaclav Papez, Stanislava Papezova |
- Abstract:
- The functions of measuring instruments and measured equipments are always affected by technical parameters of the electrical energy, which supplies apparatus and arrangements. Disturbing signals, which are propagate by power line along the supply system or by the form of radiated electromagnetic waves, get through measuring circuits. By norms defined arrangement immunity against the disturbance guarantees only a limited influence of the acceptable disturbance on measuring apparatus, this disturbance also affects the analysed arrangements. The disturbance levels that are also multiple less than the one, that the norm allows, are often noticeable in measuring results. In the paper are evaluated properties of the concrete power supplies used in laboratory- AC power network, testing AC power supply, UPC power supply, DC/AC inverter and special sources with minimal distortion – inverter with harmonic output voltage and motor – generator power supply. The motor-generator has the lowest level of disturbance of all systems. Inverter with harmonic output voltage and power network with separation transformer has the higher level. Switching PCM inverts have most high level of disturbance.
- Download:
- IMEKO-TC4-2008-094.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
- Title:
- XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation (together with 13th IMEKO TC4 Workshop on ADC Modelling and Testing)
- Place:
- Florence, ITALY
- Time:
- 22 September 2008 - 24 September 2008