> Scope of Application
◇ Three-phase planar coil core fully sealed distribution transformer capacity range 30kVA~1000kVA, a total of 15 varieties.
◇ The iron core is a three-phase three-column inner and outer 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 tight coils.
◇ The main technical and economic indicators have reached the international advanced level of similar products.
> Model Meaning
> Execution Standards
◇ 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 Technical parameters and requirements of three-phase oil-immersed power transformer
◇ International standard IEC76
◇ GB/T25289-2010 Technical parameters and requirements of 20kV oil-immersed power transformer
> Performance Characteristics
Compared with the "9" type transformer, the no-load loss of this transformer is reduced by about 30% on average. Compared with JB/T10088-1999 standard, the noise is small, and the noise is reduced by about 7dB. The temperature rise of the oil level and high and low pressure windings is about 20K-13K lower than the temperature rise limit, and there is a certain overload capacity. Strong resistance to short circuits and high reliability.
> Structural Features
Iron core: three-phase three-column inner and outer frame rolling structure, the core column is a multi-step stepped circular section; After the core is rolled, the stress is removed by vacuum annealing; grooved bending clamps, pulling screw tensioner body; The surface of the iron core is coated with special glue to ensure that the iron core does not deform and rust.
Winding and body: low-voltage winding is 1~6 wires wound four-layer or double-layer cylindrical (500kVA and below) or spiral (630kVA and above) winding; The wires are drawn from oxygen-free copper; The interlayer insulation of high and low voltage windings is Linger dispensing paper; The oil gap between the axial oil passage of the high pressure winding and the main airway between high and low pressure is the structure of the brace curtain; The yoke insulation and the trapezoidal pad are integrated to evenly compress the body; The body adopts a new hanging plate positioning structure, longitudinal and transverse positioning to ensure that the body is stable and not displaced.
Fuel tank: corrugated oil tank sealed structure, no oil leakage, maintenance-free.
> Main Technical Parameters
S13 6kV, 10kV class Type 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 Dyn11 or Yzn11 coupling group, and the load loss value after the slash applies to Yyn0 coupling group.
