33/0.4kv 2000kVA Power Distribution Transformer
Experience superior power reliability with our 33/0.4kV 2000kVA Power Distribution Transformer, a cutting-edge solution designed for efficient medium-to-low voltage conversion in extensive electrical networks. This oil-immersed transformer incorporates high-permeability grain-oriented steel cores and optimized copper windings to deliver exceptional efficiency, low noise operation, and minimal energy losses even under full load conditions. The robust conservator-type tank filled with premium inhibited mineral oil ensures excellent cooling, high breakdown voltage, and protection against environmental factors. Engineered for long-term performance in challenging climates, it features anti-corrosion coatings, sealed bushings, and overload tolerance up to 150% for short durations. Fully compliant with IEC 60076, GB/T 1094, and other global standards, this 2000kVA distribution transformer supports sustainable energy infrastructure by reducing carbon footprint through enhanced efficiency and reliable power delivery to end users.
- Primary Voltage Ratings 33kV, 46kV or others
- Secondary Voltage Ratings 0.4kV 6kV 10kV or others
- H.V. Tap Range ±8×1.25% or others
- Type power transformer
- BIL 33/0.4kV
- Standards IEEE, ANSI, NEMA, IEC, CE
- Application mining operations, oil & gas facilities
- Power Rating 2000kVA
- Certificate UL, CESI, IEEE
- Cooling Method ONAN/ONAF
- Oil Mineral Oil or FR3
- Opeartion Step Down
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
33/0.4kv 2000kVA Power Distribution Transformer
Technical Specifications
Accessories
| Rated Power | 2000kVA | |
| Rating Primary Voltage | 0.4kV, 33kV | |
| Secondary Voltage |
6.6kV 10kV 13.8kV Customized |
|
| Frequency | 50/60Hz | |
| Vector Group | Dyn11, Yyn0, Dyn5 | |
| Winding Material | Aluminum/Copper | |
| Efficiency | As IEEE, Doe 2016, CAS Std or Customized | |
| Impedance Voltage | Nominal 2% or Customized 1.1 - 5.75% | |
| Altitude | ≤1,000m or Customized | |
| Color | ANSI 70 Light gray/Munsell 7GY3.29/1.5 or customized, etc | |
| Tank material | Mild Steel, 304 Stainless Steel | |
| HV Bushing |
| LV Bushing |
| Tap changer |
| Oil level gauge |
| Oil temperature indicator |
| Pressure relief device |
| Pressure vacuum gauge |
| Lifting hook for complete transformer |
| Name plate |
| Radiators |
| Oil upper filtering valve |
| Oil drain valve with 3/8" sampler |
Customization Optional
33/0.4kv 2000kVA Power Distribution Transformer
Our 33/0.4kV 2000kVA Power Distribution Transformer provides flexible customization to match precise project specifications and operational demands in diverse distribution networks. Options include selection of winding materials—pure copper for superior conductivity or aluminum for cost-effective lightweight designs—along with enhanced insulation systems suitable for altitudes up to 4000m or polluted environments (Class IV). Voltage regulation can be achieved through off-load tap changers (±2×2.5% or ±5%) or advanced on-load tap changers for dynamic adjustment under load. Cooling configurations extend beyond standard ONAN to include ONAF for increased capacity in hot climates, while tank variations offer corrugated walls for better heat dissipation or fully sealed designs for maintenance-free operation in coastal areas. Integrated protection devices such as sudden pressure relays, oil temperature indicators, and winding temperature monitors with remote signaling enhance safety and enable smart grid compatibility.
Additional tailoring covers connection types (Dyn11, Yyn0, or custom vector groups) for optimal phase matching and harmonic reduction in modern loads. Accessories like HV/LV porcelain or polymer bushings, cable termination boxes, lightning arresters, and grounding transformers allow complete substation integration. Special finishes include epoxy coatings for extreme corrosion resistance or low-noise variants below 55dB for urban deployments. Eco-friendly biodegradable ester oil alternatives reduce environmental risks while maintaining dielectric performance. Vibration dampers and seismic qualification ensure resilience in earthquake-prone regions. These comprehensive customization choices make the transformer a versatile, high-efficiency solution highly searchable for "tailored 2000kVA distribution transformers."
Packing and Shipping
33/0.4kv 2000kVA Power Distribution Transformer
Safe transportation of the 33/0.4kV 2000kVA Power Distribution Transformer begins with professional packaging engineered to protect against mechanical and environmental stresses during global transit. The unit is firmly bolted to heavy-duty steel saddles with anti-vibration mounts, then enveloped in waterproof polyethylene sheeting to prevent moisture ingress. Radiators and fragile components are individually braced and covered, while the conservator is isolated to avoid oil movement. A sturdy fumigated wooden crate or steel frame, compliant with ISPM 15, fully encases the assembly, reinforced with shock-absorbing materials and desiccant packs. Tilt and shock sensors are installed to record any mishandling, ensuring accountability and facilitating swift resolution of potential damage claims for this critical distribution equipment.
We provide multiple shipping methods customized to urgency, destination, and budget for seamless delivery of your 2000kVA transformer. Ocean freight in dedicated 40ft flat-rack or open-top containers offers economical transport for overseas projects, with secure blocking and bracing per international maritime codes, typically arriving in 30-60 days. For faster needs, air charter services handle urgent deliveries within 7-14 days. Domestic and regional movements utilize specialized hydraulic trailers with police escorts for oversized dimensions, guaranteeing safe road compliance. Full-risk marine cargo insurance and optional all-risk coverage protect the investment throughout the journey, giving buyers confidence when searching for "secure heavy transformer logistics."
Comprehensive export documentation accelerates customs processes, including detailed packing declarations, material safety data sheets for insulating oil, and pre-shipment inspection certificates. Environmentally responsible practices feature reusable crating elements and optimized load planning to lower emissions. Clients receive real-time tracking links and proactive updates from our logistics team, from factory dispatch to final site offloading.
After arrival, we offer optional supervised unpacking, oil level verification, and initial inspection services to ensure immediate operational readiness. Recycling arrangements for packaging materials and flexible storage solutions further streamline project execution. This thorough packing and shipping framework delivers your high-efficiency 33/0.4kV transformer intact and on schedule, optimizing results in searches for "global power distribution transformer transportation."
We provide multiple shipping methods customized to urgency, destination, and budget for seamless delivery of your 2000kVA transformer. Ocean freight in dedicated 40ft flat-rack or open-top containers offers economical transport for overseas projects, with secure blocking and bracing per international maritime codes, typically arriving in 30-60 days. For faster needs, air charter services handle urgent deliveries within 7-14 days. Domestic and regional movements utilize specialized hydraulic trailers with police escorts for oversized dimensions, guaranteeing safe road compliance. Full-risk marine cargo insurance and optional all-risk coverage protect the investment throughout the journey, giving buyers confidence when searching for "secure heavy transformer logistics."
Comprehensive export documentation accelerates customs processes, including detailed packing declarations, material safety data sheets for insulating oil, and pre-shipment inspection certificates. Environmentally responsible practices feature reusable crating elements and optimized load planning to lower emissions. Clients receive real-time tracking links and proactive updates from our logistics team, from factory dispatch to final site offloading.
After arrival, we offer optional supervised unpacking, oil level verification, and initial inspection services to ensure immediate operational readiness. Recycling arrangements for packaging materials and flexible storage solutions further streamline project execution. This thorough packing and shipping framework delivers your high-efficiency 33/0.4kV transformer intact and on schedule, optimizing results in searches for "global power distribution transformer transportation."
32
32 years of industry experience
Manufacturer Test
33/0.4kv 2000kVA Power Distribution Transformer
Progress Test
Intermediate evaluations cover radiator welding integrity via ultrasonic examination and airflow resistance measurements for effective ONAN cooling. Assembled unit vibration sweeps identify mechanical resonances, ensuring structural damping adequacy. Oil dehydration and degassing processes are monitored to achieve moisture below 5ppm and breakdown voltage above 70kV. Short-duration heat run simulations detect thermal gradients, confirming hotspot factors within limits. Digital records of all progress tests support continuous improvement and client confidence in the transformer's efficiency and reliability.
Design Tests
All transformer will be tested after finishing the production, test items as follows:
♦ Insulation Power Factor
♦ Ratio, Polarity, and Phase Relation
♦ Winding Resistance
♦ Impulse Tests
♦ On load Loss Test
♦ No Load Loss Test
♦ Leak Test
♦ DC Insulation Resistance Test
♦ Transformer Turns Ratio/TTR (All Tap Voltages)
♦ Impedance Voltage & Load Loss (Rated Voltage)
♦ Polarity, 1-Ph / Phase Relation, 3-Ph (Rated Voltage)
♦ Excitation & No-Load Loss (Rated Voltage)
♦ Applied Voltage
♦ Induced Voltage
♦ Lightning Impulse
♦ Insulation Resistance (Rated Voltage)
♦ Temperature Rise
♦ Dielectric Withstand (Hipot)
Transformer Factory Acceptance Test
Advanced FAT procedures encompass full temperature rise testing at continuous rating, monitoring average oil and winding rises via fiber-optic sensors to remain below specified limits. Acoustic sound level testing ensures compliance under 60dB at 1m distance. Switching impulse simulation and partial discharge quantification under induced voltage confirm lightning and long-term insulation integrity. Functional operation of all accessories, including tap changer cycling and protection relay actuation, completes the witnessed protocol, providing certified evidence of superior quality and performance.
Routine Test - Impulse Tests
Purpose of Testing
The purpose of Impulse Tests is to verify the insulation strength of electrical equipment when it is subjected to lightning strikes or switching overvoltages. By applying high-energy impulse voltages, it is possible to detect potential defects in the insulation system.
Testing Equipment
Impulse voltage generator (e.g. Haefely, Hipotronics, Tettex, etc.)
Voltage divider (used to measure impulse voltage waveform, resistor divider or capacitor divider)
Oscilloscope (used to record impulse waveform, common brands such as Tektronix, Keysight)
Voltage divider (used to measure impulse voltage waveform, resistor divider or capacitor divider)
Oscilloscope (used to record impulse waveform, common brands such as Tektronix, Keysight)
Pre-Test Preparation
Please test under suitable environmental conditions: relative humidity less than 65%, no rain or condensation (recommended temperature: 15-30°C).
Calibrate and check the impulse voltage generator, measurement system, and control system to ensure that the instruments and equipment are in good condition and meet the test standards.
Calibrate and check the impulse voltage generator, measurement system, and control system to ensure that the instruments and equipment are in good condition and meet the test standards.
Test Progress
Connect the Test Instrument:
Connect the impulse voltage generator correctly to each winding terminal (high voltage terminal, ground terminal) of the device under test, and ensure that all test instruments are well grounded.
Apply Test Voltage:
Select the appropriate impulse voltage waveform and amplitude according to the rated voltage of the equipment
Connect the impulse voltage generator correctly to each winding terminal (high voltage terminal, ground terminal) of the device under test, and ensure that all test instruments are well grounded.
Apply Test Voltage:
Select the appropriate impulse voltage waveform and amplitude according to the rated voltage of the equipment
Measure and Record
Collect and record the impact waveform, including:
Front Time
Time to Half-Value
Peak Voltage
Distortion
Ambient temperature and humidity (especially when the test environment needs to be corrected)
Front Time
Time to Half-Value
Peak Voltage
Distortion
Ambient temperature and humidity (especially when the test environment needs to be corrected)
Waveform Correction
Check whether the impulse voltage waveform meets the specification requirements (wave head time 1.2μs ±30%, half-peak time 50μs ±20%).
If the waveform deviation is too large, adjust the impulse generator parameters and reapply the test.
If the waveform deviation is too large, adjust the impulse generator parameters and reapply the test.
Repeat Testing (if necessary)
Impact tests are performed for different phases and windings (HV/MV/LV).
In special cases, inter-winding impact, voltage-to-ground impact or coil corner impact are performed (according to the test plan).
In special cases, inter-winding impact, voltage-to-ground impact or coil corner impact are performed (according to the test plan).
Evaluation Criteria (Reference)
No internal insulation breakdown or flashover (detected by observing waveform continuity and audibly).
Waveforms are stable and meet standard specifications.
Waveform variations between repeated tests are minimal (usually good waveform overlap with no noticeable abnormal excursions).
Waveforms are stable and meet standard specifications.
Waveform variations between repeated tests are minimal (usually good waveform overlap with no noticeable abnormal excursions).
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Essential for large commercial complexes and shopping centers, this 2000kVA transformer delivers a stable low-voltage supply to support lighting, HVAC, and elevator systems efficiently.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
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What is a Transformer?A transformer is an electrical device used to change the voltage of alternating current (AC). It works on the principle of electromagnetic induction, converting high-voltage current into low-voltage current or low-voltage current into high-voltage current. Transformers are widely used in power transmission, distribution systems, and various electronic devices.
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What are the main uses of a transformer?The main use of a transformer is voltage conversion. Transformers are used in power transmission systems to help transfer electricity from power plants to consumers. In addition, transformers are also used in electronic devices such as chargers, televisions, power adapters, etc., to adjust the voltage to meet the requirements of different devices.
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Do you have UL listed?Yes, our transformer has UL listed. We have exported to America many pad mounted transformer,substation transformer and HV.
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