1,000+ Electrical Transformers (7.2–34.5 kV, 25–3000 kVA) — UL Evaluated, Certificate of Compliance Available — In Stock & Ready to Ship from Houston, CA & Florida. Contact Us Today!
Primary Voltage Ratings: 13.2 kV
Secondary Voltage Ratings: 800 V
H.V. TAP RANGE: +-2.5%*13.2kV
TYPE: Sealed tank type
Standards: IEEE Std
Application: Solar Energy
Power Rating: 1 MVA
The 1 MVA power transformers were designed and manufactured by Daelim Transformer for a customer in Costa Rica, with a quantity of two units intended for photovoltaic power generation projects. The high voltage is 13,200 GrdY/7,620V, and the low voltage is 800V connected to the inverter. The high and low voltage windings feature an electrostatic shielding design.
| Voltage rating | H.V: 13200GrdY/7620V L.V: 800V |
| Insulation Level | H.V Bil: 90 kV L.V Bil: 30 kV |
| Power Rating | 1MVA |
| Cooling Method | ONAN |
| Rated Frequency | 60Hz |
| Weight | Insulating Oil: 1420 L Total: 4170kG |
| Sound Level at 1 MVA Base | 58 dB |
| Material | Insulating Oil:Mineral oil type Ⅱ Conductor: Aluminum |
| Oil Temperature Rise | 65℃ |
| Winding Temperature Rise | 65℃ |
| Ambient Tempeature | -10℃ to 40℃ |
| Impedance at 1MVA | 5.75% |
Contact Daelim Transformer for special requirements
These 1 MVA power transformers were delivered to our customers in Costa Rica in January 2024 and have been in operation since then in photovoltaic power generation projects. Due to specific operational requirements, in addition to electrostatic shielding to mitigate harmonic influences, the transformers also incorporate anti-theft and anti-tampering design features. The high voltage side includes two doors padlocked in the compartment, with four high voltage bushings installed, one of which is a grounded spade-type gray porcelain bushing with four holes. The cables on the high voltage side are connected from the bottom.
On the low voltage side, there is a roaring structure with a flange, featuring three epoxy spade-type terminals with four holes. This design facilitates seamless connection to the inverter.
The instrument box includes a tap changer, vacuum pressure gauge, oil level indicator, oil temperature indicator, upper fill plug with filter press connection, upper filter pressure valve, and nameplate. These are installed in a full-height air terminal chamber equipped with a padlock. The oil level indicator and oil temperature indicator are equipped with alarm and trip contacts, which activate alarms or trips in case of abnormal oil level or temperature.
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