Dry Type vs Oil Filled Transformers: Which is Better?

Transformers are an essential component in the electrical distribution system, responsible for stepping up or stepping Down voltage Levels to ensure efficient Power Transmission. When it comes to transformers, there are two main types: dry type and oil-filled transformers. Each type has its own set of advantages and disadvantages, making it important to understand the differences between the two before making a decision on which one to use.

alt-290

alt-291
Dry type transformers, as the name suggests, do not use any liquid for cooling or insulation. Instead, they rely on air to dissipate heat generated during operation. This makes them a popular choice for indoor applications where fire Safety is a concern, as they do not pose a risk of oil leakage or fire hazard. Dry type transformers are also more environmentally friendly, as they do not contain any oil that could potentially leak and contaminate the surrounding Environment.

On the other hand, oil-filled transformers use oil as a cooling and insulation medium. The oil helps to dissipate heat more efficiently, allowing the transformer to operate at higher power levels without overheating. Oil-filled transformers are typically used in outdoor applications where fire safety is less of a concern, as the risk of oil leakage is lower. However, the use of oil in these transformers can pose environmental risks if not properly maintained and monitored.

When it comes to choosing between dry type and oil-filled transformers, there are several factors to consider. One of the main considerations is the application and location of the transformer. For indoor applications where fire safety is a concern, dry type transformers are often the preferred choice. On the other hand, for outdoor applications where higher power levels are required, oil-filled transformers may be more suitable.

Another factor to consider is the maintenance requirements of each type of transformer. Dry type transformers generally require less maintenance compared to oil-filled transformers, as there is no oil to monitor and replace. This can result in cost savings over the lifetime of the transformer. However, oil-filled transformers may have a longer lifespan if properly maintained, making them a more cost-effective option in the long run.

In China, there are several enterprises that specialize in the manufacturing of both dry type and oil-filled transformers. These companies have extensive experience and expertise in designing and producing transformers that meet the specific requirements of their customers. They are committed to providing high-quality, reliable transformers that are energy-efficient and environmentally friendly.

To learn more about the differences between dry type and oil-filled transformers, as well as the advantages and disadvantages of each type, many Chinese transformer manufacturers offer informative videos on their websites. These videos provide valuable insights into the design, construction, and operation of transformers, helping customers make informed decisions when choosing a transformer for their specific application.

model Rated\\u00a0power\\u00a0\\uff08KVA\\uff09 Voltage\\u00a0combination\\uff08KV\\uff09 No-load\\u00a0losses\\uff08W\\uff09 Load\\u00a0losses\\uff08W\\uff09 No-load\\u00a0Current\\u00a0(%) Short-circuit\\u00a0impedance\\u00a0(%)
SH15-M-30 30 6,6.3,10,10.5,11/0.4 33 630 1.50 4.0
SH15-M-50 50 6,6.3,10,10.5,11/0.4 43 910 1.20 4.0
SH15-M-63 63 6,6.3,10,10.5,11/0.4 50 1090 1.10 4.0
SH15-M-80 80 6,6.3,10,10.5,11/0.4 60 1310 1.00 4.0
SH15-M-100 100 6,6.3,10,10.5,11/0.4 75 1580 0.90 4.0
SH15-M-125 125 6,6.3,10,10.5,11/0.4 85 1890 0.80 4.0
SH15-M-160 160 6,6.3,10,10.5,11/0.4 100 2310 0.60 4.0
SH15-M-200 200 6,6.3,10,10.5,11/0.4 120 2730 0.60 4.0
SH15-M-250 250 6,6.3,10,10.5,11/0.4 140 3200 0.60 4.0
SH15-M-315 315 6,6.3,10,10.5,11/0.4 170 3830 0.50 4.0
SH15-M-400 400 6,6.3,10,10.5,11/0.4 200 4520 0.50 4.0
SH15-M-500 500 6,6.3,10,10.5,11/0.4 240 5140 0.50 4.0
SH15-M-630 630 6,6.3,10,10.5,11/0.4 320 6200 0.30 4.5
SH15-M-800 800 6,6.3,10,10.5,11/0.4 380 7500 0.30 4.5
SH15-M-1000 1000 6,6.3,10,10.5,11/0.4 450 10300 0.30 4.5
SH15-M-1250 1250 6,6.3,10,10.5,11/0.4 530 12000 0.20 4.5
SH15-M-1600 1600 6,6.3,10,10.5,11/0.4 630 14500 0.20 4.5
SH15-M-2000 2000 6,6.3,10,10.5,11/0.4 750 18300 0.20 5.0
SH15-M-2500 2500 6,6.3,10,10.5,11/0.4 900 21200 0.20 5.0
model Rated\\u00a0power\\u00a0\\uff08KVA\\uff09 Voltage\\u00a0combination\\uff08KV\\uff09 Off-load\\u00a0losses\\uff08W\\uff09 Load\\u00a0losses\\uff08W\\uff09 Off-load\\u00a0current\\u00a0(%) Short-circuit\\u00a0voltage\\u00a0(%)
S11-630 630 33,35/6.3,6.6,10.5,11 830 7870 1.10 6.5
S11-800 800 33,35/6.3,6.6,10.5,11 980 9410 1.00 6.5
S11-1000 1000 33,35/6.3,6.6,10.5,11 1150 11540 1.00 6.5
S11-1250 1250 33,35/6.3,6.6,10.5,11 1410 13940 0.90 6.5
S11-1600 1600 33,35/6.3,6.6,10.5,11 1700 16670 0.80 6.5
S11-2000 2000 33,35/6.3,6.6,10.5,11 2180 18380 0.70 6.5
S11-2500 2500 33,35/6.3,6.6,10.5,11 2560 19670 0.60 6.5
S11-3150 3150 33,35/6.3,6.6,10.5,11 3040 23090 0.56 7.0
S11-4000 4000 33,35/6.3,6.6,10.5,11 3620 27360 0.56 7.0
S11-5000 5000 33,35/6.3,6.6,10.5,11 4320 31380 0.48 7.0
S11-6300 6300 33,35/6.3,6.6,10.5,11 5250 35060 0.48 7.5
S11-8000 8000 33,35/6.3,6.6,10.5,11 7200 38500 0.42 7.5
S11-10000 10000 33,35/6.3,6.6,10.5,11 8700 45300 0.42 7.5
S11-12500 12500 33,35/6.3,6.6,10.5,11 10080 53900 0.40 8.0
S11-16000 16000 33,35/6.3,6.6,10.5,11 12160 65800 0.40 8.0
S11-20000 20000 33,35/6.3,6.6,10.5,11 14400 79500 0.40 8.0
S11-25000 25000 33,35/6.3,6.6,10.5,11 17020 94100 0.32 8.0
S11-31500 31500 33,35/6.3,6.6,10.5,11 20220 112900 0.32 8.0

In conclusion, both dry type and oil-filled transformers have their own unique advantages and disadvantages. The choice between the two types ultimately depends on the specific requirements of the application and the preferences of the customer. By understanding the differences between dry type and oil-filled transformers, customers can make an informed decision that meets their needs for efficiency, reliability, and environmental sustainability.