Overview:
33kV class Dry-type transformers are widely used in local lighting, high-rise buildings, airports, wharf CNC machinery and other places.
Simply speaking, dry-type transformers refer to transformers in which iron cores and windings are notimmersed in insulating oil.
Cooling methods are divided into natural air cooling (AN) and forced air cooling(AF).
During natural air cooling, the transformer can operate continuously for a long time at rated capacity.
When forced air cooling occurs, the output capacity of the transformer can be increased by 50%.
Suitable for intermittent overload operation or emergency overload operation;
Since the load loss and impedance voltage increase greatly during overload and are in non-economic operation,
it should not be kept in continuous overload operation for a long time.
Standard:
Full complied with GB/T 10228-2008; GB 1094.11-2007, IEC60076 STANDARDS
The dry type transformer meaning:
SC(B) 10 series 33KV cast resin insulation dry-type transformer technical parameter:
Rated capacity (kVA) | HV/LV | Vector group | Losses(kW) | No-load current (%) | Impedance voltage(%) | Insulating level | Weight (kg) | |
| No-load | Load | |||||||
| 50 | Dyn11 or Yyn00 | 0.500 | 1.500 | 2.8 | 6 | F/F | 610 | |
| 100 | 0.700 | 2.200 | 2.4 | 915 | ||||
| 160 | High voltage | 0.880 | 2.960 | 1.8 | 1200 | |||
| 200 | 33~38.5 | 0.980 | 3.500 | 1.8 | 1400 | |||
| 250 | 1.100 | 4.000 | 1.6 | 1600 | ||||
| 315 | 1.310 | 4.750 | 1.6 | 1800 | ||||
| 400 | Low voltage | 1.530 | 5.700 | 1.4 | 2200 | |||
| 500 | 1.800 | 7.000 | 1.4 | 2500 | ||||
| 630 | 0.4 | 2.070 | 8.100 | 1.2 | 2900 | |||
| 800 | 2.400 | 9.600 | 1.2 | 3500 | ||||
| 1000 | 0.415 | 2.700 | 11.00 | 1.0 | 4200 | |||
| 1250 | 3.150 | 13.40 | 0.9 | 4900 | ||||
| 1600 | 0.433 | 3.600 | 16.30 | 0.9 | 5800 | |||
| 2000 | 4.250 | 19.20 | 0.9 | 6600 | ||||
| 2500 | 4.950 | 23.00 | 0.9 | 7500 | ||||
FAQ:
1.What is a dry-type transformer?
Unlike their liquid-filled counterparts, dry-type transformers do not incorporate liquid to dissipate excess heat and meet temperature classification requirements.
Instead, the coils within a dry-type transformer are constructed of a gaseous or dry insulation medium.
Vacuum Pressure Impregnated (VPI) Transformers
Vacuum Pressure Encapsulated (VPE) Transformers
Open Wound Transformers
Cast Coil Transformers
Dry-type transformers have a wide range of commercial, industrial, and utility applications. They are commonly utilized in small and medium-voltage applications in electric equipment.
3.What is difference between dry type and oil type transformer?
The most significant distinction between the two transformers is their cooling medium.
Dry-type transformers employ air as a cooling medium, while oil-filled ones, as the name suggests, use oil.
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