Серия SC (B) 9 класс 33 кВ Трехфазные, 50 2500 кВА др

1.Product standard:GB1094.11-2007(Instead of GB6450-1986) GB/T10228-2008(Instead of GB/T10228-1997) IEC60076-19932.Rated High pressure voltage:33(38.5,35,31.5)KV3.Rated low pressure voltage:0.4KV,0.415KV,0.433KV4.High pressure tap range:±5% or ±2X2.5%5.Frequency:50Hz OR 60Hz6.Phase:Three-phase7.Connection symbol:DYn11 or Yyn08.Voltage regulating method:Non-excitation voltage regulation or on-load voltage regulation9.Insulation Resistant class:level F or level H10.Maximum temperature rise:coil average temperature rise no more than 100K(level F),125K(level H)11.Limit temperature:155(level F insulation coil most hotspot),180(level H insulation coil most hotspot)12.Cooling method:natural air cooling(AN) or forced air cooling(AF)13.Protection grade:IP100(no protection shell),IP20,IP23(with protection shell)14.Insulation level:L170AC70/L10AC315.Normal using condition:indoor usingInstallation site altitude can not be over 1000m high pressure type installation site altitude can not be over 4000m In non-normal using condition,customer could request special design.16.According to customer requirement,we can provide insulation endurance class for H level and other transformer with different voltage class,impedance voltage and connection symbol.17.Dry-type transformer product feature:(1).Advanced and reasonable structure,small volume,light weight,convenient installation,maintenance-free and good economy.2.Low noise and loss,good heat dissipation performance,strong loading ability.3.Good moisture proof performance,it can run with 95% relative Humidity.4.Low value of partial discharge,can guarantee long term safety operation in working voltage.5.It can increase 40 50% of rated capacity shortly in forced air cooling.6.Good insulation performance,high tolerance for lighting impulse level,and strong ability tobear sudden short circuit.7.It is high mechanical strength and good thermal stability.Because of rational combination for insulation material,it can obtain the same temperature expansion coefficient with copper conductor8.The computer temperature controller automatic monitoring and protection provides reliable safeguard for transformer's safety operation.9.It is strong ability of flame retardant and automatic flameout.It can install in load center.