The technical parameters of SG-400KVA three phase transformer
Transformer technical parameters: SG-400KVA three phase transformer is the factory's reference to international similar products, in line with IEC60076-11 and GB6450 and other international and national standards, the winding adopts the method of complete tire winding. SG-400KVA three phase transformer are vacuum dipped to achieve transformer insulation class H and product performance to international advanced levels.
The Features of SG-400KVA three phase transformer
Establishing a new neutral-grounding in SG-400KVA three phase transformer can relieve the common mode interference and other neutrals in the power grid. The SG-400KVA three phase transformer converts the three-wire △ wiring into a four-wire Yo system and the shielding further eliminates the high-frequency pulse interference coupled by the transformer And noise, although the shielded isolation transformer can effectively prevent interference (pulse and high frequency noise) from various NG, the transformer must be properly grounded and very strict, otherwise the common mode interference will be ineffective.
The features and advantages of SG-400KVA three phase transformer
1. High isolation
2. SG-400KVA three phase transformer has good performance of N-G
3. High common mode interference suppression
4 .Convert △ to Y
5. Voltage taps are easy to convert
6 .Designed according to user's special performance requirements
The technical index of SG-400KVA three phase transformer
1. Model: SG-400KVA
The Capacity of SG-400KVA three phase transformer: 400KVA
2. Input rated voltage: three-phase 380V input rated current: 607A
Output rated voltage 220V output current: 1049A
3. No-load current: <6.2A
4. Impedance; ： <5%
5. Load loss of SG-400KVA three phase transformer: <180W
6. Working frequency: 50Hz-60Hz
7. Efficiency: ≥95%
8. Temperature rise: <60K
9. Waveform distortion: <0.1%
10. High voltage test: 2500V, no breakdown in 1 minute
11. Insulation resistance of SG-400KVA three phase transformer: winding resistance to ground insulation resistance ≥500M Europe
12. Primary to secondary insulation resistance ≥500M Euro
13. Overload capacity of SG-400KVA three phase transformer: 2 times rated current 1min without abnormal
14. Material: copper core
15. Insulation class of SG-400KVA three phase transformer: H class
16. Connection method: Dyn11,
17. Noise <65Db
18. Protection class IP54 / IP20
19. Cooling method
20. Transformer weight 1200KG
21. Dimensions 1400 * 950 * 1300
The condition using of SG-400KVA three phase transformer
1 .Applicable altitude: ≤5000m
2. Ambient temperature: -15 ℃ ～ + 45 ℃
3 .Relative humidity: ≤90%
4. The installation site should be free of gases, steam, chemical deposits, dirt, conductive dust, conductive dust and other materials that seriously affect the insulation strength of the SG-400KVA three phase transformer.