GNEE EC 200kVA 11/0.4kv, 11/0.415kv Distribution Transformer
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Product Introduction
The main parameters and characteristics of 200kVA 11/0.4kv and 11/0.415kv distribution transformers are as follows:
Rated capacity: 200kVA, indicating the maximum power that the transformer can operate continuously
Transformation ratio: The high-voltage side/low-voltage side are 11KV/0.4KV and 11KV/0.415KV respectively, indicating that the input voltage is 11 kilovolts and the output voltage is 0.4KV and 0.415KV respectively
Number of phases: Three phases, suitable for three-phase power systems
Rated frequency: 50Hz, suitable for 50 Hz power supply
Winding connection: Y Nyn0, i.e. star-star connection mode
Cooling mode: natural cooling (AN)
Short-circuit impedance: 6%, indicating the resistance of the transformer in a short-circuit state
Weight: 800kg, easy to transport and install
Shell protection level: IP00, no protective measures
Ambient temperature range: -20℃~+40℃, suitable for a wider temperature range
Insulation level: F-class insulation, with high heat resistance
| Rated capacity: | 200kVA |
| Transformation ratio: | 11kV/0.4kV on the high voltage side and 11kV/0.415kV on the low voltage side |
| Number of phases: | three-phase |
| Rated frequency: | 50Hz |
| Cooling method: | natural cooling (AN) |
| Short-circuit impedance: | 6% |
| Weight: | 800kg |
| Ambient temperature range: | -20℃~+40℃ |
| Insulation grade: | Class F |
Application scenarios and advantages and disadvantages
These transformers are suitable for commercial and industrial sites that require a stable power supply. Since they are dry-type transformers, they do not require oil cooling and have the advantages of safety, reliability, low noise, and maintenance-free. In addition, the natural cooling method also makes the maintenance cost lower. However, due to the lack of protective measures (IP00), they are not suitable for use in harsh environments.
Two ways to connect distribution transformers
Star connection (Y-type connection): Three loads (A, B, C) are connected to the phase line of a three-phase power supply, and their neutral points are connected to the neutral line of the power supply to form a star structure. The specific connection method is to connect one end of load A to the phase line L1, one end of load B to the phase line L2, one end of load C to the phase line L3, and then connect the other ends of loads A, B, and C to the neutral line N.
Triangle connection (Δ-type connection): The three loads A, B, and C form a closed triangle loop. The specific connection method is to connect one end of load A to the other end of load B, one end of load B to the other end of load C, and one end of load C to the other end of load A
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