1.GB1094.11-2007 dry type transformer
Protection grade 2.GB4028-2008 casing (IP code)
3.IEC76 power transformer
4.IEC726 dry type transformer
5.GB/T10228-2008 dry type transformer technical parameters and requirements
6.GB/T17211-1998 Loading guide
Insulation and insulation test for 7.GB10237-1998 power transformer
8.JB/T10008-2004 6 ~ 500 (KV) transformer sound level
9.JB/T56009-1998 dry type transformers grading of product quality
Three, performance characteristics
1 security, fire protection, no pollution, can be directly run in the load center;
2 using the domestic advanced technology, high mechanical strength, strong anti short circuit ability, partial discharge of small, good thermal stability, high reliability, long service life;
3 low loss, low noise, energy-saving effect obviously, maintenance free;
4 good heat radiating performance, strong over load capacity, forced air cooling can improve the capacity of operation;
5 good moistureproof performance, adapt to the operation of high humidity andother harsh environments;
The temperature detection and protection system can be equipped with 6 dry type transformer. The intelligent signal control system, can automatically detect and display the temperature of three-phase windings circuit respectively, which can automatically start, stop the fan, and the alarm, trip feature set;
7 has the advantages of small volume, light weight, small floor space, low cost of installation.
Four, structural characteristics
1 iron core is made of high quality cold-rolled silicon steel sheet, a 45 degreeladder full inclined joint structure, using three cut two Chong core chamfer cutting technology and five step step cut and stacked iron process, improving the distribution of magnetic flux to the joint, reduce the vibration energy of the iron core. The core of the insulating resin sealing process for curing and surfacedevelopment, effectively reduces the no-load loss, no-load current and corenoise;
2 high-voltage coils using high-quality F grade insulated conductors with international advanced insulation winding coil, large capacity is provided along the axial direction of radiating airway. The heat performance of this structure withcurrent anti impact, good anti temperature, anti cracking and excellent. Themultistage cylindrical structure, strong withstand voltage capability and very lowpartial discharge level. Coil loading mode by vacuum drying pouring, pouring and curing process according to the whole process curve of pre finished, ensure no coil hole, hole precision process control;
3 low voltage coil with a foil type structure, can effectively solve the low voltage,high current coil adopts a wire wound type of ampere turns imbalance, and foil type coil turns and there is no axial axial winding spiral angle, effectively eliminating the short axial force of the transformer, the current density line circlecan according to the high voltage coil load distribution free along the axialadjustment, reducing the radial force voltage sudden short-circuit. Coil end afterthe resin sealed curing, avoiding the various foreign bodies in and moisture. Dry type transformers are used H (temperature of 125K) epoxy resin insulation levelsto produce F grade (100K transformer temperature rise), the operation of Wen Shengyuan in the limit value.
