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Summary of Contents for PNI SVM-10K
- Page 1 PNI SVM-10K/ PNI SVT-10K Three-phase voltage stabilizer / Stabilizator de tensiune trifazat User manual ............Manual de utilizare ..........
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Page 3: Operating Principle
Introduction The voltage stabilizers PNI SVM-10K and PNI SVT-10K are designed to stabilize the output voltage. When the input voltage from the electrical network fluctuates, the voltage stabilizer will automatically adjust the voltage as close as possible to the preset value. - Page 4 Fig 1. Electrical operation diagram of the voltage stabilizer with automatic compensation: The primary winding of the TUV regulation transformer is connected in the form of a Y. It is connected to the output terminal of the voltage stabilizer. The secondary winding is connected with the primary winding of the compensation transformer (TB).
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Page 5: Basic Components
Uai, the output voltage in phase A Uao is kept constant. Phases B and C follow the same principle. Voltage stabilization procedure When the unit that measures the input voltage detects a variation outside the preset range, it will send a signal to the control unit that will activate the servomotor. - Page 6 When the automatic option is selected, the voltage increase/decrease can be automatically detected by the detection unit and the required voltage will be set. Detection and adjustment unit of the three-phase voltage stabilizer The control transformer detects the voltage from the output terminal of the voltage stabilizer.
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Page 7: Operating Conditions
The stabilizer has two control boards, named A and B. If there is a malfunction on control board A during operation, the switch to control board B can be activated manually, which will work instead of the board. A. Single-phase voltage stabilizer detection and adjustment unit The operating principle of the detection and adjustment unit of the single- phase voltage stabilizer is the same as the three-phase voltage stabilizer. -
Page 8: Technical Specifications
Technical specifications Model PNI SVM-10K PNI SVT-10K AC input Voltage range 277 V ~ 433 V Frequency 50 / 60 Hz Phase Three-phase + N + G AC ouput tension 380 V / 400V Precision voltage ≤ ±3 % regulation... -
Page 9: Troubleshooting
• do not block the ventilation slots of the stabilizer • periodically clean the stabilizer housing of dust • check the input and output cables if they are correctly connected and if they are in good condition • check that the stabilizer does not have condensation on the housing. Troubleshooting In case of improper operation of the voltage stabilizer, before calling a specialized service center, check the following:... - Page 10 so as to ensure the reliable operation of the voltage stabilizer. The details are as follows: • Check the main loop connection wire to see if it is properly connected and if the universal switch connection wires are in position. Tighten well if it gets weak.
- Page 11 output voltage. If the input voltage is at the upper limit, the output voltage will also be at the upper limit and will exceed the overvoltage protection value. At this point, you should set the “Manual/Automatic” switch to the “Automatic” position.
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Page 12: Daily Maintenance
Daily maintenance Regularly check the working condition of the voltage stabilizer. Also check the temperature rise in the compensation transformer and the regulation transformer to see if: They are normal. The load exceeds the nominal value. The input voltage exceeds the specified limit. The adjustment system and the gears (including the gear chains and the reduction housing) work normally. - Page 13 Stabilizatoarele de tensiune cu servomotor PNI au o gama larga de aplicatii. In functie de capacitatea lor, se pot conecta: echipamente electromecanice, echipamente industriale, aparate de aer conditionat, televizoare, electrocasnice, scule electrice, frigidere si, in general, electronice care au nevoie de tensiunea stabila.
- Page 14 Fig 1. Schema de functionare electrica a stabilizatorului de tensiune cu compensare automata: Bobinajul primar al transformatorului de reglare TUV este conectat in forma de Y. El este conectat la borna de iesire a stabilizatorului de tensiune. Bobinajul secundar este conectat cu bobinajul primar al transformatorului de compensare (TB).
- Page 15 cu Uai, tensiunea de iesire in faza A Uao este mentinuta constanta. Fazele B si C urmeaza acelasi principiu. Procedura de stabilizare a tensiunii Cand unitatea care masoara tensiunea de intrare detecteaza o variatie in afara intervalului presetat, va trimite un semnal care unitatea de control care va activa servomotorul.
- Page 16 Cand este selectata optiunea automata, cresterea/scaderea tensiunii poate fi detectata automat de unitatea de detectare si va fi setata tensiunea necesara. Unitate de detectare si reglare a stabilizatorului de tensiune trifazat Transformatorul de control detecteaza tensiunea de la borna de iesire a stabilizatorului de tensiune.
- Page 17 Stabilizatorul are doua placi de comanda, denumite A si B. Daca exista vreo defectiune pe tabloul de comanda A in timpul functionarii, se poate activa manual comutatorul spre placa de comanda B, care va functiona in locul placii. Unitate de detectare si reglare a stabilizatorului de tensiune monofazat Principiul de functionare al unitatii de detectare si reglare a stabilizatorului de tensiune monofazat este acelasi cu stabilizatorul de tensiune trifazat.
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Page 18: Specificatii Tehnice
Specificatii tehnice Model PNI SVM-10K PNI SVT-10K Intrare AC Interval tensiune 277 V ~ 433 V Frecventa 50 / 60 Hz Faza Trifazat + N + G Iesire AC Tensiune 380 V / 400V Precizie reglare tensiune ≤ ±3 %... - Page 19 • verificati cablurile de intrare si iesire daca sunt corect conectate si daca sunt in stare buna • verificati ca stabilizatorul sa nu aiba condens pe carcasa. Probleme si solutii In caz de functionare necorespunzatoare a stabilizatorului de tensiune, inainte de a apela la un centru service specializat, verificati urmatoarele: •...
- Page 20 • Verificati firul de conectare al buclei principale pentru a vedea daca este corect conectat si daca firele de conectare ale intrerupatorului universal sunt pe pozitie. Strangeti bine daca se slabeste. • Verificati firele de contact ale tuturor tipurilor de dispozitive electrice din spatele panoului, cum ar fi voltmetrul, ampermetrul, comutatorul si vedeti daca sunt conectate corect.
- Page 21 avea tensiune de iesire. Daca tensiunea de intrare este la limita superioara, tensiunea de iesire va fi, de asemenea, la limita superioara si va depasi valoarea de protectie pentru supratensiune. In acest moment, ar trebui sa reglati comutatorul „Manual/Automatic” pe pozitia „Automat”. Apasati butonul „Stabilizare tensiune”...
- Page 22 Intretinere zilnica Verificati regulat starea de functionare a stabilizatorului de tensiune. Verificati, de asemenea, cresterea temperaturii in transformatorul de compensare si transformatorul de reglare pentru a vedea daca: Sunt normale. 2. Sarcina depaseste valoarea nominala. 3. Tensiunea de intrare depaseste limita prevazuta. 4.
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