100kVA Oil Immersed Transformer
NPC ELECTRIC 100kva Oil Immersed Transformer boasts a robust design that utilizes high-quality materials to ensure long-lasting performance. Its oil-immersed cooling system provides effective heat dissipation, maintaining optimal operating temperatures even under heavy loads. This transformer is designed to handle a maximum power capacity of 100kVA, making it suitable for a wide range of applications, including commercial, industrial, and residential settings.
One of the standout features of the SGOB 100kva Oil Immersed Transformer is its advanced insulation system, which enhances its short-circuit resistance and overall safety. The transformer also features a precision-engineered winding structure that optimizes electrical performance and reduces energy loss.
- Primary Voltage Ratings 34.5-19.92/13.8-7.957/13.2-7.62/12.47-7.2, 24.94, 26.25, 33 or others
- Secondary Voltage Ratings 480/277V, 400/230V, 380/220V or customized
- H.V. Tap Range ± 2×2.5% HV taps or others
- Type Oil immersed distribution transformer
- BIL 30/95kV
- Standards IEEE, ANSI, NEMA, IEC
- Application Industrial Power Distribution, Commercial Buildings, Agriculture, Power Distribution Substations
- Power Rating 100kVA
- Certificate UL, CESI, IEEE
- Cooling Method ONAN, ONAN/ONAF, KNAN, KNAN/KNAF
- Oil Mineral Oil or FR3
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
100kVA Oil Immersed Transformer
Technical Specifications
Accessories
| Technical Specifications | ||
| Rated Power | 100 kVA | |
| Rating Primary Voltage | 2.4 - 34.5kV | |
| Secondary Voltage | 480/277V 400/230V 380/220V 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 | |
| Insulating Oil Weight | 155 kg | |
| Total Weight | 605 kg | |
| Outline Dimensions（L×W×H）in. | 890 × 520 × 81140（mm) | |
| 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
100kVA Oil Immersed Transformer
NPC ELECTRIC’s three-phase oil-immersed transformers can be fully customized to meet your specific requirements.
The optional specifications of the 100kVA three-phase oil-immersed transformer include a variety of customized options to meet different application requirements. Customers can choose different voltage levels and load adjustment devices, such as tap switches with load or no load adjustment, to ensure accurate output of voltage. In addition, the transformer can be equipped with a temperature monitoring system, an oil level monitoring device, and a pressure relief device to enhance safety and real-time monitoring. In order to improve the durability of the equipment, users can also choose anti-corrosion coating or stainless steel casing, which is suitable for use in harsh environments.
The optional specifications of the 100kVA three-phase oil-immersed transformer include a variety of customized options to meet different application requirements. Customers can choose different voltage levels and load adjustment devices, such as tap switches with load or no load adjustment, to ensure accurate output of voltage. In addition, the transformer can be equipped with a temperature monitoring system, an oil level monitoring device, and a pressure relief device to enhance safety and real-time monitoring. In order to improve the durability of the equipment, users can also choose anti-corrosion coating or stainless steel casing, which is suitable for use in harsh environments.
With these optional configurations, the 100kVA three-phase oil-immersed transformer can better adapt to different working environments and operating conditions.
Packing and Shipping
100kVA Oil Immersed Transformer
NPC ELECTRIC transformers are designed to be securely packaged for sea freight transport, ensuring safe delivery across long distances. For this purpose, the Packing and Shipping process for a Transformer is designed to ensure safe delivery to the customer, minimizing the risk of damage during transit.
The transformer is securely packed in a robust, weather-resistant wooden crate or steel container, with appropriate cushioning materials like foam or bubble wrap to absorb any shocks or impacts during transport.
The packing is carefully designed to protect the transformer from moisture, dust, and other environmental factors that could potentially affect its functionality.
For shipping, the transformer is typically delivered via road, rail, or sea, depending on the destination. It is properly secured to the shipping platform or pallet using straps or tie-downs to prevent any movement during transit.
The packaging is clearly labeled with handling instructions and safety warnings to ensure that all involved parties handle the equipment with care.
Shipping documentation, including customs clearance forms, certificates of origin, and any necessary permits, is included to comply with international shipping standards. Upon arrival, the transformer is inspected for any potential damage before installation. This thorough packing and shipping process ensures that the Transformer reaches its destination in optimal condition, ready for installation and long-term operation.
The transformer is securely packed in a robust, weather-resistant wooden crate or steel container, with appropriate cushioning materials like foam or bubble wrap to absorb any shocks or impacts during transport.
The packing is carefully designed to protect the transformer from moisture, dust, and other environmental factors that could potentially affect its functionality.
For shipping, the transformer is typically delivered via road, rail, or sea, depending on the destination. It is properly secured to the shipping platform or pallet using straps or tie-downs to prevent any movement during transit.
The packaging is clearly labeled with handling instructions and safety warnings to ensure that all involved parties handle the equipment with care.
Shipping documentation, including customs clearance forms, certificates of origin, and any necessary permits, is included to comply with international shipping standards. Upon arrival, the transformer is inspected for any potential damage before installation. This thorough packing and shipping process ensures that the Transformer reaches its destination in optimal condition, ready for installation and long-term operation.
32
32 years of industry experience
Manufacturer Test
100kVA Oil Immersed Transformer
Progress Test
NPC Electric manufactures three-phase oil-immersed transformers the strict quality control. The Progress Test of a 100kVA three-phase oil-immersed transformer is a series of intermediate tests performed during the transformer production process to ensure that the design requirements are met at each stage of manufacturing and to detect potential problems early. These tests are usually carried out in stages to ensure that the transformer gradually meets the quality standards during the production process. Mainly include:
Winding inspection: Resistance measurement is performed after the initial winding is completed to ensure that there are no short circuits or open circuits and to verify the quality of the winding.
Insulation performance test: After the winding is completed, the transformer is subjected to preliminary insulation testing to ensure that the insulation material and design meet safety requirements and avoid any short circuits or electrical leakage during the production process.
Voltage ratio test: The voltage ratio test is performed during the assembly process to ensure that the voltage ratio between the high-voltage and low-voltage windings of the transformer meets the design requirements.
Preliminary load loss test: During the preliminary assembly stage of the transformer, a load loss test is performed to ensure that the energy efficiency of the transformer under the design load meets the expected.
Design Tests
All transformer will be test after finished the production, test items as below:
♦ 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
The Factory Acceptance Test (FAT) of the 100kVA three-phase oil-immersed transformer is the final verification before the transformer leaves the factory, and its purpose is to ensure that the transformer fully complies with the design specifications and quality standards. This test is carried out after the transformer is assembled and usually includes the following steps:
Load loss and no-load loss test: Test the energy loss of the transformer under no-load and full-load conditions to ensure that the energy efficiency meets the standards and reduce energy waste.
Short-circuit impedance test: Test the electrical performance of the transformer under short-circuit conditions to ensure that the transformer can safely withstand short-circuit conditions and has sufficient short-circuit resistance.
Winding resistance test: Check the winding resistance to ensure that the winding is not damaged, short-circuited, or out of specification.
Insulation resistance test: Test the various insulation parts of the transformer to ensure that there are no leaks or faults, especially the insulation of the windings and grounding system.
Temperature rise test: Simulate the operating state of the transformer under load to confirm that it will not overheat under rated load, and the temperature remains within a safe range.
The purpose of FAT is to ensure that the performance and safety functions of the transformer meet the standards before delivery to the customer, so as to avoid any potential use problems.
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
Industrial Power Distribution, Commercial Buildings, Agriculture, Power Distribution Substations
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Transformers Packaging (1)
Transformers Packaging (2)
Transformers Packaging (3)
Transformers Packaging (4)
Transformers Packaging (5)
Transformers Packaging (6)
Transformers Packaging (7)
Transformers Packaging (8)
Related Products
50kVA Completely self-protected(CSP) Single Phase Pole Mounted Transformer
50kVA Completely self-protected(CSP) Single Phase pole Mounted transformer is a robust, high-efficiency solution designed for reliable single-phase power distribution in residential, commercial, and small industrial applications. This transformer features built-in protection mechanisms, including overload, short-circuit, and over-voltage safeguards, ensuring automatic disconnection during fault conditions to protect both the transformer and the electrical system. With its pole-mounted design, it is space-efficient and ideal for installations in urban, rural, and remote areas. The transformer operates with low losses, ensuring high energy efficiency and long-term performance. Built with durable materials, it offers exceptional resilience against harsh weather conditions, ensuring reliability and longevity. This transformer is an ideal choice for any application requiring consistent, stable single-phase power.
75kVA Conventional Type Single Phase Pole Mounted Transformer
NPC ELECTRIC has been specialized in manufacturing 75kVA Conventional Type Single Phase pole Mounted transformer for more than 20 years, which complies with international standards such as ANSI/IEEE C57, IEC60076 and other standards. Its main function is to convert high voltage electricity (such as 11kV, 13.8kV, etc.) into low voltage electricity (such as 120V/240V), providing stable and reliable power supply to end users. It is suitable for residential, commercial, agricultural and small industrial loads.
2000kVA Three Phase Pad Mounted Transformer
2000kVA Three Phase Pad Mounted transformer adopts a fully sealed oil-immersed design, which complies with international standards such as IEC, ANSI and GB. It has the characteristics of high efficiency, low loss and strong weather resistance. It is widely used in industrial parks, commercial complexes, power companies and new energy projects, and is particularly suitable for medium and large load environments that require both stable power supply and energy saving.
3000kVA Three Phase Pad Mounted Transformer
NPC ELECTRIC's 3000kVA Three Phase Pad Mounted transformer complies with international standards such as IEC and IEEE. It adopts a fully sealed and fully insulated design and has excellent overload capacity and safety performance. It is widely used in industrial parks, commercial complexes, new energy power stations and other scenarios, and is suitable for outdoor ground installation. The product has a compact structure, reliable operation, and easy maintenance, making it an ideal choice for modern power distribution systems.
2500kVA Oil Immersed Transformer
NPC ELECTRIC's 2500kVA oil-immersed transformer is designed with international advanced technology and complies with international standards such as IEC, ANSI, and ISO. It has high efficiency, low noise, and excellent thermal stability. This transformer is widely used in power transmission and distribution systems to ensure a stable and reliable power supply. With its durable structure and excellent performance, NPC ELECTRIC's 2500kVA oil-immersed transformer provides safe and efficient energy solutions for users around the world.
800kVA Oil Immersed Transformer
The NPC ELECTRIC 800kVA Oil-Immersed Transformer is designed for high efficiency, durability, and reliable power distribution. Built to meet IEC 60076 and ANSI/IEEE standards, it ensures superior performance and safety. Certified for international quality compliance, it is ideal for industrial, commercial, and utility applications.FAQ From Customers
-
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.
-
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.
-
Do you have UL listed?Yes, our transformer has UL listed. We have exported to America many pad mounted transformer,substation transformer and HV.
Welcome your inquiry
Honesty, Integrity, Frugality, Activeness and Passion