Dimethyl carbonate (DMC) is a versatile, non-toxic, biodegradable reagent with tunable chemical reactivity. It serves as a green alternative to dimethyl sulfate or methyl halides and phosgene for methylation and carboxylation reactions. DMC can be prepared by the base-catalyzed reaction between carbon dioxide and methanol.DMC can replace phosgene as a safe reaction reagent for the synthesis of carbonic acid derivatives and work as organic intermediates, pharmaceutical products, pesticide productsCould also be used in coating industry.DMC is a safe and green cleaning solvent.Dimethyl carbonate (DMC) is a versatile, non-toxic, biodegradable reagent with tunable chemical reactivity. It serves as a green alternative to dimethyl sulfate or methyl halides and phosgene for methylation and carboxylation reactions. DMC can be prepared by the base-catalyzed reaction between carbon dioxide and methanol.DMC can replace phosgene as a safe reaction reagent for the synthesis of carbonic acid derivatives and work as organic intermediates, pharmaceutical products, pesticide productsCould also be used in coating industry.DMC is a safe and green cleaning solvent.
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Frequency series resonant voltage withstand test device The series resonance composed of reactor L and the capacitor C of the test sample has a fixed resonant frequency F = 1/(2π√L·C) When the test frequency is equal to this frequency, the circuit resonates . Through this principle, the power supplied by the FM power supply to the excitation transformer is transformed into the medium voltage plus L and the capacitor C of the sample through the excitation transformer. By changing the output frequency of the FM power supply, the loop is in a series resonance state, and then the output voltage of the FM power supply is adjusted so that the voltage on the sample reaches the required voltage value.
Technical index 1, ambient temperature: -10 ~ 45 °C
2, working humidity: ≤ 90%
3, altitude: ≤2000M
4, the power input: 220V ± l0% single-phase output 0 ~ 220V (≤ 10KW)
380V ± 10% three-phase, 50Hz output 0 ~ 400V
5, rated test capacity: 0 ~ 8000KVA (selection)
6, resonant voltage: 0 ~ 1000KV (selection)
7, frequency adjustment range: 0.1 ~ 300Hz
8, system measurement accuracy: 0.5 level 9, frequency adjustment resolution: 0.01Hz
10, instability: ≤ 0.05%
11, the output waveform: sine wave 12, waveform distortion rate: ≤ 0.5%
13, noise: 60dB
14, reactor Q: 30 ~ 200
The complete set constitutes a frequency-modulated power supply that can both change its output frequency and change its output voltage.
Excitation transformer - acts as a coupling signal and voltage change and raises the voltage according to its own changes.
Reactor - in series with the test object, constitutes an LC series resonant circuit.
Capacitive voltage divider - measures the voltage on the sample and feeds it back to the FM power supply as a sample signal.
Compensating capacitor - to compensate for the small capacity of the test product, adjust the frequency of the test product.
Professional research and development and production of frequency conversion series resonant withstand voltage test equipment warranty for three years, worthy of the trust of enterprises in Shanghai 100 test electrical business model mainly in the production of direct sales as the leading, dedicated to the production of variable frequency series resonant pressure test equipment and many other products, the company was founded in 1992 over the years Cooperation with many large companies. The company's frequency conversion series resonant withstand voltage test device used to provide a number of engineering companies, excellent corporate staff to create a hundred test quality, 100 test brand frequency conversion series resonant withstand voltage test device worthy of corporate trust, the company will always uphold the "people-oriented, pioneering and innovative; The concept of "winning quality, pursuing excellence". Make the frequency conversion series resonant withstand voltage test device and other products to do better, enthusiasm for the majority of power users to provide our best service.
April 10, 2023