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: 34.5-19.92/13.8-7.957/13.2-7.62/12.47-7.2 ,24.94, 13.8, 44 or others
Secondary Voltage Ratings: 208GrdY/120;416GrdY/240,480GrdY/277,/600GrdY/347,220y/127,480V,415v,600v or others
H.V. TAP RANGE: ±2×2.5% or others
CONNECTION TYPE: Dyn11/YNyn0 or others
TYPE: Loop feed/Radial feed
BIL: 30-200 kV
Standards: IEEE/ANSI, CSA/CAN
Application: EV charging, BESS, Data center, Industry, Renewable energy
Power Rating: 4000 kVA （4 MVA）
Certificate: UL, cUL, CSA, SGS
Daelim Transformer is a professional manufacturer of transformers with UL listings and certifications for voltage levels up to 44kV, offering a comprehensive range of UL-certified pad-mounted transformers. Annually, we export thousands of these transformers to the United States and Canada. Proficient in IEEE/ANSI, CSA, DOE, NEMA, and other standards, our team ensures compliance with diverse regulatory requirements. In addition to UL certification, we also hold CSA, MF, CESI certificates, and third-party SGS test reports. With extensive project experience, we understand that each project has unique requirements. That’s why we offer customizable transformers, allowing adjustments to voltage, capacity, connection method, and special design to perfectly suit your needs. The 4000 kVA pad-mounted transformer can be customized to fit your project requirements. Contact Daelim Transformer today to receive the parameter sheet, drawings, and quotation for the 4000kVA(4 MVA) Pad Mounted transformer.
| 4000 kVA(4 MVA) Transformer Specifications | |||
| Phase | Three phase | Std. | CSA C227.4 & CAN/CSA 802.1 Std |
| Power rating | 4000kVA(4MVA) | Config | Dead front/radial feed |
| Mounting | Pad Mount | Frequency | 60Hz |
| HV Voltage | 27.6kV | Tap changer | 5-position |
| LV Voltage | 600Y/347V | Fluid Capacity | 2200L |
| HV BIL | 125 kV | Total weight | 7800kG |
| LV BIL | 30 kV | No load loss | 5200W |
| Vectorgroup | Dyn1 | On load loss | 30400W |
| Cooling method | ONAN | Impedance | 7.00% |
| Winding Material | Aluminum | Paint Color | Munsell green |
| Core form | Three phase 3-column | Capacity @ 65°C Temperature Rise | 4000 kVA |
You may enjoy: 4000 kVA Substation Transformer
Contact Daelim Transformer for special requirements
| 4000 kVA (4 MVA) Transformer Accessories | |||
| Name | Qty | Name | Qty |
| Hinged door | 2 | Tap changer | 1 |
| Lifting lug | 4 | Door handle | 1 |
| Fill plug | 1 | Up fill valve | 1 |
| HV bushing well | 3 | Oil level gauge | 1 |
| Flip top cover | 1 | Ground terminal | 2 |
| L.V bushing(10 hole) | 4 | Ground strap copper | 1 |
| Pressure relief valve | 1 | GEA group bracket | 1 |
| Vacuum pressure gauge | 1 | Termianl support | 4 |
| Parking stand bracket | 3 | Temperature indicator | 1 |
| Drain valve with sampler | 1 | Loadbreak bushing insert | 3 |
| Name plate(stainless steel) | 1 | Pentahead bolt arrangement | 1 |
The ZGSL-Z-4000/27.6/0.6 transformer is a 4000 kVA (4 MVA) pad-mounted unit, configured in a dead-front radial feed setup. This particular transformer has been meticulously designed by Daelim Transformer to cater to the specific requirements of our esteemed Canadian clientele. Notably, it does not feature protection fuses or a loadbreak switch.
In terms of electrical connections, the high-voltage side is equipped with three plug-in bushings, while the low-voltage side boasts four integrated bushings complete with terminal brackets. It’s imperative to mention that the low-voltage X0 terminal is effectively grounded to ensure proper safety and operational integrity.
In terms of physical dimensions, the transformer measures 2500mm in length, 1722mm in width, and 2035mm in height. Furthermore, the total weight of the transformer is about 7800 kg. The efficiency value is 99.4%.
The 4000 kVA (4 MVA) industrial transformer offers a robust array of features tailored to meet the demands of diverse applications. With its substantial power rating, this transformer delivers exceptional performance in various scenarios.
Primary Voltage: This transformer is designed to operate with a primary voltage of three-phase 27600V Delta, ensuring compatibility with a range of industrial setups.
Secondary Voltage: It provides a secondary voltage of three-phase 600GrdY/347 Wye, facilitating seamless integration into power distribution systems.
Tap Changer: Equipped with a 5-position tap changer on the high-voltage (HV) side, this transformer can be efficiently adjusted to operate at varying voltage levels, including 28980V, 28290V, 27600V, 26910V, and 26220V. This flexibility allows for precise voltage control to accommodate specific operational requirements.
Cooling Method
The ZGSL-Z-4000/27.6/0.6 transformer utilizes an air cooling system and does not incorporate fans or provisions for fan mounting. This cooling method, known as ONAN (Oil Natural Air Natural), efficiently dissipates heat generated during operation, ensuring reliable performance.
Temperature Rise
One of the notable attributes of this transformer is its 65°C temperature rise design. This feature minimizes heat wastage, enhances overall reliability, and extends the unit’s operational lifespan. At this temperature rise level, the transformer delivers its rated capacity of 4000 KVA (4 MVA), optimizing efficiency and performance.
Gauges
The transformer is equipped with essential gauges to monitor key parameters. These gauges include liquid level, temperature, and pressure/vacuum gauges. They are of the analog, manual reading type, providing critical insights into the transformer’s operating conditions. It’s important to note that these gauges do not feature auxiliary contacts.
The ZGS-Z-4000(5320)/24.94/0.6, boasting power ratings of 4000 kVA and 5320 kVA, is a transformer designed for versatile performance. It employs the KNAN/KNAF cooling method, encompassing both oil natural (KNAN) and air forced (KNAF) cooling systems, complete with equipped fans. This cooling arrangement empowers the transformer to operate efficiently under varying load conditions. Specifically, the transformer can initially deliver a power rating of 4000 kVA without fan assistance, but its capacity can be augmented to 5320 kVA by activating the fans, allowing for load-dependent fan control.
In terms of electrical specifications, the ZGS-Z-4000(5320)/24.94/0.6 features a primary voltage of three-phase 27.6kV Delta and a secondary voltage of three-phase 600GrdY/347 V Wye. The transformer’s winding material is copper, ensuring superior electrical performance. Its vector group is designated as Dyn1. The load loss is measured at 28000W, and the no-load loss is specified at 3600W.
Additionally, the 4000 kVA transformer is equipped with a tap changer and gauges featuring contact points, necessitating the inclusion of a control box. It’s worth noting that there are no protection fuses or loadbreak switches in this configuration.
The transformer is designed to utilize biodegradable vegetable oil as its insulating and cooling fluid, with an oil capacity of 1890 liters, aligning with sustainable and environmentally conscious practices.
The ZGSL-H-4500/13.8/0.415 transformer is a 4500 kVA (4.5 MVA) unit that boasts UL certification, signifying its adherence to rigorous safety and quality standards. All the associated accessories of this transformer also comply with UL certification requirements, ensuring a high level of reliability and safety.
This 4500 kVA (4.5 MVA) transformer is configured in a loop feed arrangement, featuring a high voltage rating of 13.8 kV and a low voltage rating of 415V. Both the high and low voltage sides employ the Dyn1 vector group, which is a well-established configuration known for its efficiency and reliability.
The transformer exhibits an impressive efficiency rating of 99.37%, underscoring its energy-efficient operation. Furthermore, it has an impedance rating of 5.75%, which is a crucial factor in determining its electrical performance characteristics.
In terms of safety features, the transformer is equipped with a two-fuse system, enhancing protection and reliability. Additionally, it features a four-position load break switch, which offers versatile operational configurations. The four positions of this switch include:
These multiple configurations provide flexibility in managing the electrical connections and ensuring optimal operation of the transformer in diverse scenarios.
| 4500 kVA Transformer Specifications | |||
| Phase | 3 phase | Std. | IEEE C57.12.34 |
| Power rating | 4500kVA(4.5MVA) | Config | Dead front/loop feed |
| Mounting | Pad Mount | Frequency | 60Hz |
| HV Voltage | 13.8kV | Tap changer | 5-position |
| LV Voltage | 415V | Fluid Capacity | 2650L |
| HV BIL | 90 kV | Total weight | 8800kG |
| LV BIL | 30 kV | No load loss | 4050W |
| Vectorgroup | Dyn1 | On load loss | 39500W |
| Cooling method | ONAN | Impedance | 5.75% |
| Winding Material | Aluminum | Paint Color | Munsell green |
| Core Construction | 3-legged core | Capacity @ 65°C Temperature Rise | 4500kVA |
The 4000 kVA transformer, meticulously designed and manufactured by Daelim Transformer, is destined for deployment within the Battery Energy Storage System (BESS) infrastructure in California. This robust transformer has been meticulously crafted to meet the stringent regulations outlined in the California Electrical Code Article 450.
The application of these transformers is at a Battery Energy Storage power generation facility, where they must exhibit remarkable resilience against various electrical challenges. Specifically, these transformers are engineered to withstand harmonic voltages and currents emanating from inverters, transient over-voltages resulting from switching surges and faults, as well as substantial fluctuations in transformer loading, which are commonplace in BESS projects.
Learn more about The BESS Project
An innovative feature of these transformers is the incorporation of an electrostatic shield positioned between the windings. This shield effectively dissipates static charges to the grounded core, enhancing safety and performance. The exterior of these transformers boasts a protective Munsell green coating, ensuring durability and corrosion resistance.
12.47 kV Compartment Features
34.5 kV Compartment Features
External Compartments Include
The Oil Sampler/Drain Valve is situated within a weatherproof and lockable cover on the transformer’s exterior, ensuring accessibility without entering the high-voltage or low-voltage compartments.
Compartment Location
The 12.47 kV and 34.5 kV compartments are positioned on the wide side (front) of the transformer tank. These high-voltage and low-voltage compartments are separated by a vertical steel barrier and are arranged side-by-side on one side of the transformer tank. When viewed from the front, the low-voltage compartment is located on the right.
Factory Tests
The transformer undergoes comprehensive factory tests in strict accordance with ANSI/IEEE C57.12.90 standards. Each unit undergoes a battery of tests, including resistance measurements, polarity, and phase relation assessments, ratio evaluations, examination of no-load losses and excitation current, load loss measurements and impedance voltage assessments, impulse tests (with only one unit per production size required), dissolved gas in oil analysis, insulation power factor tests, and oil quality assessments.
The certified test report is an integral part of the delivery, furnished to the Purchaser within five days following the successful completion of all factory tests. These rigorous testing procedures attest to the quality, reliability, and adherence to standards that characterize these transformers.
Learn more: Daelim Transformers Solutions For Energy Storage
4 MVA Pad Mounted Transformer types
Daelim 4 MVA pad mounted transformer has two types, one is loop feed and another is radial feed type. You can choose according to the requirements of the access grid. You can also select Dead Front or Live Front.
4 MVA Pad Mounted Transformer Standard Primary
The following table shows the standard primary voltage of the 4 MVA transformer. Daelim’s technical team can customize the design if you need other voltage or special requirements.
| Standard Primary | ||||
| Voltage Rating | Minimum BIL | Voltage Rating | Minimum BIL | |
| Delta or Wye | Ground Wye | |||
| 2400 V | 45 kV | 4160GrdY/2400 | 65 kV | |
| 4160 V | 60 kV | 12470GrdY/7200 | 95 kV | |
| 4800 V | 60 kV | 13200GrdY/7620 | 95 kV | |
| 7200 V | 75 kV | 13800GrdY/7970 | 95 kV | |
| 7620 V | 75 kV | 22860GrdY/13200 | 125 kV | |
| 12000 V | 95 kV | 23900GrdY/13800 | 125 kV | |
| 12470 V | 95 kV | 24940GrdY/14400 | 125 kV | |
| 13200 V | 95 kV | |||
| 13800 V | 95 kV | 34500GrdY/19920 | 150 kV | |
| 16340 V | 95 kV | |||
Learn more about pad transformers:3 Phase Pad Mounted Transformer-Daelim Belefic
4000kVA Pad Mounted Transformer Outline Drawing
The picture below is Daelim 13.8 kV/415v 4000 kVA pad mounted transformer outline drawing for blockchain.
For 4000 kVA pad-mounted transformers, winding materials, the number of accessories, voltage levels, and efficiency values will affect its weight. The following table shows the weight of a 13.8 kV 4000kVA pad-mounted transformer.
| 13.8 kV 4000kVA Padmount Transformer Weight | ||||||||
| Tank and accessories | 2600kg | |||||||
| Oil Weight | 2650L | |||||||
| Total Weight | 8800kg | |||||||
The following table shows the dimensions of the Daelim 13.8 kV 4MVA pad mount transformer.
| 12.47 kV 4MVA Pad mounted Transformer Dimension | ||||||||
| Height | 2400mm | |||||||
| Depth | 2000mm | |||||||
| Width | 2200mm | |||||||
Learn more about Pad Mounted Transformer
For the pad-mounted transformers of 4000 kVA, wooden boxes, and wooden pallets are usually packed. If you have special packaging requirements, you can tell the Daelim team to help you customize it.
The picture below is the pad-mounted transformer packing of Daelim.
The DAELIM factory has strict technical and quality control to ensure each transformer’s reliable, safe, and electrical performance. Daelim 4000kva pad-mounted distribution transformers have an extended two-year warranty, and transformers have a service life of up to 40 years.
Please feel free to contact the Daelim Team if you have any concerns.
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