YDSF SERIES 4POLE Brushless, self exciting Class 'H' insulation Standard degree of protection is IP22 Self regulation With fan cooling Resist humid grease AC excitation, rotating rectification tube Stator grease insulation covered Rotator and excitation high polymer, Resist the corruption of oil and acid. Rotator balance is in accordance with BS5625 Standard 12.5 High-quality lubrication sealed long-time bearing Rotator silicon steel close tight Alternator Technical Data Exciter Brushless Cooling Fan Cast alloy aluminum Bearing Single, double shielded Windings 100% copper Connection Type Reconnectable Insulation Type Class H Pitch 2/3 Amortisseur Winding Full Voltage Regulator S*460 Voltage Regulation NL - FL +-1.5% Underspeed Protection Standard Overexcitation Protection IP22 Standard JB/T3320.2-2000, IEC34-1 Phase Sequence: A(U) B(V) C(W) TIF(1960 Weightings) < 50 THF < 2%
