China JUCEG factory specializing in high-volume production with strict ISO quality control, offering OEM/ODM services.400KVA Cast Resin Transformer is a dry-type transformer with a rated capacity of 400KVA, which is manufactured using the epoxy resin casting process. It is widely used in places with high requirements for fire prevention, explosion protection, and moisture resistance.
Factory-direct 400KVA Cast Resin Transformer wholesale – 50% off bulk orders.The winding is completely encapsulated in epoxy resin using the epoxy resin casting process, forming a dense insulation layer with extremely high insulation strength. This can effectively prevent electrical breakdown and local discharge. The dielectric loss tangent value (tanδ) of the epoxy resin is extremely low, reducing energy loss and improving the efficiency of the transformer. The epoxy resin cast after pouring forms a high-strength fiberglass reinforced plastic structure, which can withstand short-circuit current impact, mechanical vibration, and collisions during transportation, protecting the winding from damage. 400KVA Cast Resin Transformer has good anti-cracking performance, and can maintain structural integrity even in environments with large temperature variations, preventing insulation layer cracking and resulting insulation failure. The casting process completely seals the winding in the epoxy resin, effectively preventing moisture, dust, and corrosive gases from entering, and prolonging the service life of the transformer. It is suitable for corrosive environments such as chemical and metallurgical industries, as well as coastal areas with high humidity or underground locations.
Transformer Type
Resin Cast Dry Type
Model
SCB10-50/10
Number of Phase
Three Phase
Winding Type
Two Winding
Winding Material
Aluminum/Copper
Rated Capacity
50kVA
High Voltage
10/11kV
Low Voltage
0.4kV
Tapping Range
±2x2.5%
Impedance Voltage
4%
Load Loss (120°C)
1kW
No-load Loss
0.27kW
No-load Current
2%
Frequency
50/60Hz
Connection Group
Yyn0/Dyn11
Cooling Method
ANAF
Insulation Class
F
Thermal Class
F1
Protection Level
IP00/IP20/IP30
Climatic Class
C2
Environmental Class
E2
Temperature Rise
100K
Operation Altitude
≤1000m
Size
950x750x915mm
Weight
575kg
1.H-Grade Insulation
SG10 Series power transformers use great material and new technology to achieve H-grade insulation, it is reliably used in ambient temperature up to 180ºCand the main part of the transformer can sustain up to 220ºC.
2.Safety
SG10 series power transformers use insulated materials which is flame retardant and moisture-proof, the combustible material is only 10% of the epoxy resin transformer. There's no poisonous fumes during long time burning at 800ºC.
3.Reliable
SG10 series power transformers use special coil design and technology to achieve moisture-proof, mould proof and fame proof. It can sustain high thermal shock without partial discharge.
4.Strong over-load ability
SG10 series power transformer can sustain 120% rated capacity. It can longtime running under IP23 without force air cooling.
Technical Specification
Technical Data for 35KV Class Three Phase Epoxy-resin Dry-type Transformer
Rated Power
(KVA)
High Voltage
(KV)
Low Voltage
(KV)
Connection
Symbol
On-load Loss
(W)
No-Load Current
(%)
50
20
22
24
or others
0.4
Dyn11
YNyn0
1300
2.4
100
2100
2.2
160
2600
1.8
200
3100
1.8
250
3600
1.6
315
4300
1.6
400
5100
1.4
500
6100
1.4
630
7200
1.2
800
8700
1.2
1000
10300
1.0
1250
12150
0.9
1600
14600
0.9
2000
17250
0.8
2500
20400
0.8
5000
35800
0.7
Technical Data for 20KV Class Three Phase Epoxy-resin Dry-type Transformer
Rated Power
(KVA)
High Voltage
(KV)
Low Voltage
(KV)
Connection
Symbol
On-load Loss
(W)
No-Load Current
(%)
50
20
22
24
or others
0.4
Dyn11
YNyn0
1300
2.4
100
2100
2.2
160
2600
1.8
200
3100
1.8
250
3600
1.6
315
4300
1.6
400
5100
1.4
500
6100
1.4
630
7200
1.2
800
8700
1.2
1000
10300
1.0
1250
12150
0.9
1600
14600
0.9
2000
17250
0.8
2500
20400
0.8
5000
35800
0.7
Technical Data for 10KV Class Three Phase Epoxy-resin Dry-type Transformer
Rated Power
(KVA)
High Voltage
(KV)
Low Voltage
(KV)
Connection
Symbol
On-load Loss
(W)
No-Load Current
(%)
50
6
6.3
6.6
10
10.5
11
13.2
or others
0.4
Dyn11
YNyn0
990
2
100
1570
1.8
160
2120
1.4
200
2520
1.4
250
2750
1.4
315
3460
1.2
400
3980
1.2
500
4880
1.2
630
5870
1
800
6950
1
1000
8120
0.8
1250
9690
0.8
1600
11730
0.8
2000
14450
0.6
2500
17170
0.6
5000
34600
0.5
Selection Considerations
1. Select the appropriate rated capacity based on the actual load conditions, taking into account the demand for future load growth. The rated capacity of 400KVA Cast Resin Transformer should be equal to or greater than the rated capacity of the load to handle current requirements and consider future expansion.
2. Confirm the altitude, environmental temperature, humidity and other conditions of the installation location of 400KVA Cast Resin Transformer. If necessary, select specially designed transformers.
For outdoor transformers, choose products with higher protection grades to cope with various complex weather conditions.
3. Based on the installation space and protection requirements, select the appropriate protection level and cooling method.
For locations with limited space, a transformer with a small size and light weight should be chosen to facilitate installation and maintenance.
4. Confirm the rated voltage and voltage fluctuation range of the system, and select the corresponding voltage levels for the high and low sides.
The rated voltage of the transformer should be equal to or greater than the rated voltage of the system to ensure stable power transmission.
5. Based on the system grounding method and load characteristics, select the appropriate connection group.
Common connection groups include Dyn11, Yyn0, etc. You can choose according to your actual needs.
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