4000 kVA(4 MVA) Pad Mounted Transformer

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.

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4000 kVA Transformer Specifications
4 MVA Transformer Accessories

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

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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

Daelim Transformer Certificates

Daelim Transformer

ZGSL-Z-4000/27.6/0.6

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%.

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4000 kVA(4 MVA) Transformer Features

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.

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4 MVA (4000 kVA) Transformer Features

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.

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ZGS-Z-4000(5320)/24.94/0.6

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.

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4000 kVA (5320 kVA) Transformer

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.

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4500 kVA (4.5 MVA) Transformer

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.

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4500 kVA Transformer

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:

A side on + transformer on
B side on + transformer on
A and B sides + transformer on
A and B sides + transformer off

These multiple configurations provide flexibility in managing the electrical connections and ensuring optimal operation of the transformer in diverse scenarios.

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4500 kVA(4.5 MVA) Transformer Specifications

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

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4500 kVA(4.5 MVA) Transformer Specifications

4000 kVA Pad Mounted Transformer For BESS System

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.

Design Features

12.47 kV Compartment Features

Bushing Arrangement: Loop feed bushings configured for termination with 600 Amp dead break elbows as per C57.12.34.
NEMA 2-hole tank ground positioned near the tank base.
Expulsion-type fuses in series with current limiting fuses, factory-sized and pre-installed.
Compartment accessible only when the 34.5 kV compartment is opened.
Dead front construction conforming to ANSI C57.12.26 standards, featuring an air-filled compartment.
Equipped with parking stands and ground pads.
Filling plug located on the sidewall of the compartment.
Cable support facilitated by a cross-member strut channel made of galvanized steel or aluminum (Unistrut P1000 series or equivalent).

34.5 kV Compartment Features

Bushing Arrangement: Loop feed bushings configured for termination with 600 Amp dead break elbows per C57.12.34.
NEMA 2-hole tank ground positioned near the tank base.
Expulsion-type fuses in series with current limiting fuses, factory-sized and pre-installed.
Dead front construction conforming to ANSI C57.12.26 standards, featuring an air-filled compartment.
Equipped with parking stands and ground pads.
Filling plug located on the sidewall of the compartment.
Cable support facilitated by a cross-member strut channel made of galvanized steel or aluminum (Unistrut P1000 series or equivalent).
The nameplate includes essential information: Manufacturer's name, primary and secondary voltage, kVA rating, serial and catalog numbers, type impedance, wiring diagram, and manufacturing date.
A hinged compartment door, tamper-resistant in line with ANSI C57.12.28 requirements.

External Compartments Include

Nitrogen filling plug.
Dial-type thermometer.
Vacuum/pressure gauge.
Liquid level gauge.

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	24940GrdY/14400	125 kV
13800 V	95 kV	34500GrdY/19920	150 kV
16340 V	95 kV	34500GrdY/19920	150 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 crypto mining.

4000 kVA Pad Mounted Transformer Weight

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

4MVA Pad Mounted Transformers Dimensions

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

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4000kVA Pad Mounted Transformer Packing

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.

4000 kVA Pad Mounted Transformers Quality and Tech Control

3750 kva pad mounted transformer
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.