System is equiped with: two channel digital voltage regulator, fully redundant thyristor power converters in 1+1 configuration, DC field circuit breakers and rotor overvoltage protection. It is suitable for large hydro and turbogenerators. The static excitation system is based on a robust modular design, engineered and designed to meet all modes of operation of large synchronous generators. The system is characterized by high accuracy, reliability and speed. The main characteristics of this system are: dual-channel redundant configuration, automatic voltage regulator, adjustable PID type, excitation current regulator, higher-level control functions (the reactive and active compensation by current generator, the Power Factor Controller / cos (φ) regulator, embedded power system stabilizer (PSS) ), integrated limiter functions, logic and sequence control, the possibility of extending the digital and analog inputs and outputs.
Germany
The CSN® HECT, HEVT and HECT/VT by Schniewindt combines proven sensor technology and opticaldigital data transfer according to the standard IEC 6185092, creating a future orientated solution for applications in high voltage AC substations. The required values to be measured are recorded in analog signal form by conventional sensor elements (R/C high voltage divider for voltage measurement and Rogowski coil for current measurement) on HVline potential and transferred to the RemoteDataModule (RDM) mounted in the head construction of the instrument transformer. The RDM converts the recorded data into a digital serial protocol and transmits them via optical fiber to the Merging Unit (MU), located in the control room. The distance between instrument transformer and MU can be up to 1 km. The MU transfers the data protocol of three instrument transformers into the protocol according to IEC 6185092. For signal output
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Since 1975 present in Europe with regenerated solvents and thinners, regenerated glycols and polyethylene glycols, solvents for bitumen, acids, end-of-season and non-standard products. We carry out filtrations, neutralizations, dehydrations and rectification of non-standard products. Our regenerates: acetone, acetic acid, formic acid, butyl acetate, ethyl acetate, isobutyl acetate, methyl acetate, methoxypropanol acetate, isobutanol, normalbutanol, sec-butanol, denatured isopropanol, methoxypropanol, methylene chloride, dichloropropane, chlorinated mixtures, dimethylformamide , dimethylacetamide, dibasic esters, butyl glycol, monoethylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, HCFC141b, MEK, MIBK, n-methyl-2-pyrrolidone, PEG 200, PEG 300, PEG 4000, perchlorethylene, polyols, naphtha solvent, denatured toluene, THF , trichlorethylene, denatured xylene.
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