Scope of application
The capacity range of three-phase plane coiled iron core fully sealed distribution transformer is 30KNA~1000KVA,with 15 varieties in total.
The iron core is a three-phase three column internal and external frame rolling structure.High degree of mechanization.
The high and low voltage coils are continuously wound on the iron core column,with good concentricity and compact coils.
The main technical and economic indicators have reached the international advanced level of similar products.

Model meaning

Model meaning
GB1094.1~2-2013 power transformer GB1094.3-2003 power transformer
GB/T1094.4-2005 power transformer GB1094.5-2008 power transformer
GB/T6451-2015 three-phase oil-immersed power transformer technical parameters and requirements International standard IEC76
GB/T25289-2010 Technical parameters and requirements of 20kV oil-immersed power transformer

Performance characteristics
Compared with the "9"type transformer,this transformer has an average reduction of about 30%in no-load losses.Compared with the JB/T10088-1999 standard,the noise is relatively low,with a reduction of approximately 7dB.The temperature rise of the oil surface and high and low voltage windings is about 20K-13K lower than the temperature rise limit,and there is a certain overload capacity. Strong short-circuit resistance and high reliability.

Structural features
Iron core:Adopting a three-phase three column  internal and external frame  rolling  structure,the core column  has a  multi-level stepped  circular  cross-section;After  rlling  the  iron  core,stress  is  removed  through  vacuum  annealing;Slot  shaped  bending  clamp, pulling screw to tighten the body;Apply special adhesive on the surface of the iron core to ensure that it does not deform or rust.
Winding and body:The low-voltage winding is a four layer or double layer cylindrical (500KVA and below)or spiral (630kVA and above)winding  with  1-6  wires  winding  in  parall;The  wires  are  alldrawn  with  oxygen  free  copper;The  interlayer  insulation  of  the high and low voltage windings is made of diamond dot adhesive paper;The axial oil duct of the high-voltage winding and the oil gap between the high and low voltage main air ducts are of a strut curtain structure;The iron yoke insulation and trapezoidal cushion block are integrated to evenly compress the body of the device;The body adopts a new type of hanging plate positioning structure,with longitudinal and transverse positioning to ensure that the body is stable and not displaced.
Fuel tank:It adopts a corrugated oil tank sealed structure,which is non oil leakage and maintenance free.

Main  technical  parameters
S136KV,10kV class 13 oil-immersed non-excitation voltage regulation distribution transformer no-load loss and load loss
 

Note:1.The load loss value before the slash in the table applies to the Dyn11 or Yzn11 coupling group,and the load loss value after the slash applies to the Yyn0 coupling group.