Dry type transformers are widely recognized for their ability to operate without the need for a liquid coolant, making them a preferred choice in many applications. These transformers utilize air as a cooling medium, which enhances their safety profile and reduces environmental risks associated with leakage. Their compact design also allows for easy installation and maintenance in confined spaces. One of the primary advantages of dry type transformers is their resilience against environmental factors. They are well-suited for indoor installations and areas with high humidity or dust levels, as they can withstand various operating conditions without compromising performance. Additionally, their ability to operate at higher altitudes without derating makes them versatile for diverse applications.
The Role of Liquid Immersed Transformers
Type
Rated capacity (KVA)
No-load losses(W)
Voltage combination (KV)
Load losses(W)
No-load current (%)
Short-circuit impedance (%)
S11-M-30
30
100
6,6.3,10,10.5,11/0.4
600
2.3
4.0
S11-M-50
50
130
6,6.3,10,10.5,11/0.4
870
2.0
4.0
S11-M-63
63
150
6,6.3,10,10.5,11/0.4
1040
1.9
4.0
S11-M-80
80
180
6,6.3,10,10.5,11/0.4
1250
1.9
4.0
S11-M-100
100
200
6,6.3,10,10.5,11/0.4
1500
1.8
4.0
S11-M-125
125
240
6,6.3,10,10.5,11/0.4
1800
1.7
4.0
S11-M-160
160
280
6,6.3,10,10.5,11/0.4
2200
1.6
4.0
S11-M-200
200
340
6,6.3,10,10.5,11/0.4
2600
1.5
4.0
S11-M-250
250
400
6,6.3,10,10.5,11/0.4
3050
1.4
4.0
S11-M-315
315
480
6,6.3,10,10.5,11/0.4
3650
1.4
4.0
S11-M-400
400
570
6,6.3,10,10.5,11/0.4
4300
1.3
4.0
S11-M-500
500
680
6,6.3,10,10.5,11/0.4
5100
1.2
4.0
S11-M-630
630
810
6,6.3,10,10.5,11/0.4
6200
1.1
4.5
S11-M-800
800
980
6,6.3,10,10.5,11/0.4
7500
1.0
4.5
S11-M-1000
1000
1150
6,6.3,10,10.5,11/0.4
10300
1.0
4.5
S11-M-1250
1250
1360
6,6.3,10,10.5,11/0.4
12800
0.9
4.5
S11-M-1600
1600
1640
6,6.3,10,10.5,11/0.4
14500
0.8
4.5
S11-M-2000
2000
2280
6,6.3,10,10.5,11/0.4
17820
0.6
5.0
S11-M-2500
2500
2700
6,6.3,10,10.5,11/0.4
20700
0.6
5.0
S11-M-30-
30
90
20,22/0.4
660
2.1
5.5
S11-M-50-
50
130
20,22/0.4
960
2
5.5
S11-M-63-
63
150
20,22/0.4
1145
1.9
5.5
S11-M-80-
80
180
20,22/0.4
1370
1.8
5.5
S11-M-100-
100
200
20,22/0.4
1650
1.6
5.5
S11-M-125-
125
240
20,22/0.4
1980
1.5
5.5
S11-M-160-
160
290
20,22/0.4
2420
1.4
5.5
S11-M-200-
200
330
20,22/0.4
2860
1.3
5.5
S11-M-250-
250
400
20,22/0.4
3350
1.2
5.5
S11-M-315-
315
480
20,22/0.4
4010
1.1
5.5
S11-M-400-
400
570
20,22/0.4
4730
1
5.5
S11-M-500
500
680
20,22/0.4
5660
1
5.5
S11-M-630
630
810
20,22/0.4
6820
0.9
6
S11-M-800
800
980
20,22/0.4
8250
1.8
6
S11-M-1000
1000
1150
20,22/0.4
11330
0.7
6
S11-M-1250
1250
1350
20,22/0.4
13200
0.7
6
S11-M-1600
1600
1630
20,22/0.4
15950
0.6
6
Liquid immersed transformers, on the other hand, utilize oil as a cooling medium, which provides excellent heat dissipation and insulation properties. This type of transformer is especially favored in high-capacity applications where efficiency and reliability are paramount. The oil not only cools the transformer but also serves as an insulator, enabling the device to handle significant electrical loads while minimizing the risk of overheating. These transformers are commonly employed in utility applications and large industrial facilities, where they can be found in substations and power plants. Their robust construction allows them to operate efficiently even under heavy load conditions, making them an essential component of electrical distribution systems.
Medium Transformers: A Key Component in Power Distribution
Medium transformers play a crucial role in power distribution networks, bridging the gap between high voltage transmission and lower voltage distribution systems. They are designed to step down voltage levels to a range that is safe and usable for commercial and residential applications. This transformation is vital for delivering electricity efficiently to end-users while maintaining system integrity.