20kV Grade SC(B)11 three phase dry type power tr

20kV Grade SC(B)11 three phase dry type distribution transformer Main Characteristics 1.Low no-load loss and energy conservation 2.Low noise and environmental protection 3.Long service lifetime and safe and reliable performance 4.Advanced structural design and exquisite craftsmanship 5.Appropriate protective measures Normal Operation Conditions 1.Installation site: outdoors or indoors 2.Altitude: less than 1000M 3.Ambient temperature: -25oC +40oC 4.Maximum relative humidity: 95%(25oC) 5.Earthquake-resistant capability: the horizontal acceleration of ground surface is 0.3g, and thevertical acceleration of ground surface is 0.15g concurrently acting continuous three sine waves, safety factor ≥1.67 6.All-weather working capability in outdoor environment 7.The equipment has certain capability in dustproof, antifouling, waterproof, earthquake resistance and shock resistance Note: Transformers operating in special environment are available upon the demand of customers. Standard of Products GB1094.1-1996, GB1094.2-1996, GB1094.3-2003, GB1094.5-2008, GB1094.7-2008, GB/T6451-2008, etc 20kV SC(B)11-50 2500/20,10Performance Parameter ListRatedcapacity(kVA)Voltage combination and tap rangeConnectionGroupNo-loadloss(W)75°C load loss(W)No-loadcurrent(%)Impedancevoltage(%)Highvoltage(kV)Tap(%)Lowvoltage(kV)5020±5±2*2.5 0.4Dyn11Yyn030012301.906.0 10047019801.5016058024601.3020064029301.1025073034001.1031584040601.00400100048201.00500117057601.00630132068000.80800152082200.801000179097300.8012502060114800.8016002410137900.8020002800162900.6025003340192700.6016002410145000.808.020002800177000.6025003340210000.60Note: 1. Load loss values above the oblique line in the table are applicable to the Yyn0 connection group, and the values below the oblique line are applicable to the Dyn11 or Yzn11 connection group. 2. The list shows main performance parameters of a three-phase duplex winding off-circuit-tap-changing distribution transformer. Customized transformers of different specification are available upon the demand of users. 20