400 kVA Power Transformer

Primary Voltage Ratings: 10kV, 6kV
Secondary Voltage Ratings: 400V
H.V. TAP RANGE: ±2 x 2.5%
CONNECTION TYPE: DYn11
TYPE: hermetic tank
Standards: IEC
Application: Distribution system
Power Rating: 400 kVA
Certificate: CE
Cooling Method: ONAN

These 400 kVA three-phase power transformers, available in 6 kV and 10 kV options, feature Medium Tension Porcelain/Plug-In Bushings and hermetic tanks. Designed for outdoor use, they comply with IEC and EN standards and meet Tier 2 efficiency requirements for reduced energy consumption and carbon emissions. Key specs include ±2 × 2.5% voltage regulation, idling losses ≤ 610 W, short-circuit losses ≤ 4,600 W, and noise level ≤ 58 dB. They come with a 24-month warranty and are suitable for temperatures from -45°C to +40°C.

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400 kVA Transformer Key Features

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Rated Power: 400 kVA
Primary Voltage Options: 6 kV or 10 kV
Secondary Voltage: 0.4 kV
Connection Group: D/Yn11
Short-Circuit Voltage: 5%
Short-Circuit Current and Duration: 25 × In / 2 kA/s
Cooling: ONAN
Tank: Hermetic, sealed structure
MV/LV Terminals: Medium Tension Porcelain Bushings, top-exit design
Drain Line: 192 mm
Voltage Regulation: ±2 × 2.5%

Daelim Transformer CE Certificate

These high-efficiency 400 kVA three-phase power transformers are designed for the Romanian market. Available in two high-voltage options (6 kV and 10 kV), both models feature a low voltage of 0.4 kV. They are equipped with Medium Tension Porcelain Bushings and designed for outdoor use with a hermetic tank structure. Complying with IEC and EN standards, these transformers meet Tier 2 efficiency requirements, offering significant energy savings and reduced carbon emissions.

Testing and Performance:

MV Winding Test Voltage:
- 6 kV Model: 60 kV
- 10 kV Model: 75 kV
Industrial Frequency Test Voltage for MV Winding (1 min):
- 6 kV Model: 25 kV
- 10 kV Model: 35 kV
Industrial Frequency Test Voltage for LV Winding (1 min): 5 kV
Full-Pulse Test Voltage for External Insulation Atmospheric Discharges:
- 6 kV Model: 60 kV
- 10 kV Model: 75 kV
Industrial Frequency Test Voltage for Insulation in Dry State (1 min):
- 6 kV Model: 32 kV
- 10 kV Model: 42 kV
Industrial Frequency Test Voltage for Insulation Under Rain (1 min):
- 6 kV Model: 20 kV
- 10 kV Model: 28 kV

Losses and Efficiency:

Idling Losses: ≤ 610 W
Short-Circuit Losses: ≤ 4,600 W
Noise Level: ≤ 58 dB
Efficiency: Meets Tier 2 efficiency requirements for reduced energy consumption and lower carbon footprint.

Environmental and Operational Specifications:

Outdoor Use: Yes
Temperature Range: -45°C to +40°C
Altitude Above Sea Level: < 1,000 m

Certifications and Warranty:

Certifications: ISO 9001, ISO 14001
Warranty: 24 months

These 400kVA transformers are engineered to deliver reliable performance while ensuring high efficiency and compliance with international standards. Ideal for various industrial and commercial applications, they offer enhanced durability and operational safety in challenging environments.