Shanghai Trihope (PVT) Ltd  

Product Name: China High Quality Electrical Transformer Densified Laminated Wood Model NO.: customized Brand: Sti Color: Wood Color Certification: ISO9001 Classification: Hybrid Insulation Materials Maximum Voltage: 20KV~100KV Thermal Rating: 250 250 Material: Wood Chemistry: Organic Insulation Type: Insulation Sheet Application: Insulators Name: Wood/ Board Usage: Transformer Insulator Trademark: STI Transport Package: Sea / Air Shipping Specification: customized Origin: Zhejiang, China Product Description China High Quality Electrical Transformer Densified Laminated Wood1.Brief induction1)Low dielectric loss electrical insulating laminated compressed wood is widely used as insulating andsupporting material in power transformers and instrument transformers .It has many virtues such as moderate density ,high mechanical strength ,easy to dry in vacuum dryer ,no bad inter-reaction with transformer oil ,easy to mechanical processing etc. The dielectric constant of this materials close to transformer oil ,that make a reasonable insulationmatch .It can be used in transformer oil of 105 centigrade for long time .2)People usually use this material to make upper / lower pressure pieces ,cable supporting beams,limb spacer blockin oil-immersed transformers.And clamps in instrument transformers.It substitute steel plate ,insulating paper sheet ,epoxy paper sheet ,epoxy glass fiber woven laminated board in these field ,thus can down the fabricating expenseand weight of transformers .3)Electrical insulating laminated compressed wood is made from birch and willow veneer that peeled from highquality timbers ,Veneer was and copressed with high temperature after gelatinizing .2.Standard dimension of our product (unit mm)1) To meet customers needs we produce boards of three different area :1500×3000 1220×2440 850×18502) Usual thickness:Roechiling can also produce board of special thickness on customer's requests .10,15,20,25,30,35,40,45,50,60,70,80,1003.Dimension tolerance (unit mm )ItemsLengthWidthThicknessStandard30001500101520253035404550607080100Tolerance0 to 50 to 30 to 20 to 2.50 to 3Standard240012001015202530354045506070801008501850Tolerance0 to 30 to 30 to 1.50 to 20 to 2.54.Warp of board (unit mm)ThicknessMaximum distance from straight ruler10-35no more than 440-60no more than 370-100no more than 2.55.Apprearance qualityItemPermitable rangeSwellingnot allowedCrackingDead knotForeign-body adheringInsect holeRotContaminationBruisingA few is permitted ,but should not have bad effecting in usageImpressionColor-odds and splashPatches per squire meter on surfaceno more than 36.PackingPacked in cases made from wood strips,wood frames and other strong enough materials covered with moistureproof materialGross weight of each package not exceed 3000kgs.7.StorageProducts should be stored in a clean dry room wih temperture not exceed 40 centigrade .and should be laid flatwise ona stepping-board which at least 50 mm from the ground ,never close to fire sources ,heat sources and protection against