167kVA Single Phase Pad Mounted Transformer
NPC ELECTRIC 167 kVA pad mounted transformer meets/exceeds DOE 2016 efficiency ratings with UL/cUL listed. NPC ELECTRIC Transformer, a distinguished transformer supplier and manufacturer with a UL listing, offers tailored solutions for 167 kVA transformers to align with distinct standards, technical specifications, and application settings.
- 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 480-240/240-120or customized
- H.V. Tap Range ± 2×2.5% HV taps or others
- Type Loop Feed or Radial Feed
- BIL 30/95kV
- Standards CSA, IEEE, DOE, NEMA
- Application Residential areas, Commercial hubs, Transportation centers, Airports etc.
- Power Rating 167kVA
- Certificate UL/cUL, CSA, CESI
- Cooling Method ONAN, ONAN/ONAF, KNAN, KNAN/KNAF
- Oil Minerial Oil or FR3
- Opeartion Step Down & Step Up
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
167kVA Single Phase Pad Mounted Transformer
Technical Specifications
Accessories
| Rated Power | 167 kVA |
| Rating Primary Voltage | 11950Delta or Customized |
| Secondary Voltage | 480-240V 240-120V 277V Customized |
| Frequency | 50/60Hz |
| Vector Group | Ii0,Ii6 |
| 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 | 265 kg |
| Total Weight | 910 kg |
| Outline Dimensions（L×W×H）in. | 1200×965×1000(mm) |
| Lifting Lug | ELSP Fuse |
| Hinged Door | BAY-O-NET Fuse |
| Parking Bracket | Tap Changer |
| Tank Cover | Oil Level Gauge |
| L.V Bushing (4-Hole ) | Pressure Relief Valve |
| Two/Four Position Load break Switch | Vacuum Pressure Gauge |
| HV Grounding Copper Bar | Terminal Block |
| Temperature Indicator | Door Handle |
| H.V Bushing Well | Ground Strap |
| Grounding Copper Bar | Nameplate |
| 1"'Drain Valve With 3/8" Sampler | Non-PCB decal |
| 1" Upper Fill Valve Filter Press Connection | High Voltage Warning Signs |
Customization Optional
167kVA Single Phase Pad Mounted Transformer
NPC ELECTRIC’s single-phase pad-mounted transformers can be fully customized to meet your specific requirements.
The optional specifications for a 167kVA Single Phase Pad Mounted Transformer typically include various customization options to meet specific application needs. These may include different input and output voltage configurations to suit particular power requirements, additional overload and short-circuit protection features for enhanced safety, and higher protection ratings (such as IP65 or above) for outdoor or harsh environmental conditions. The transformer may also be equipped with advanced monitoring systems supporting remote diagnostics and data collection, such as Modbus communication protocols for real-time performance tracking. Optional cooling systems (such as forced air or natural cooling) and higher-efficiency current transformers could also be selected to improve operational efficiency and long-term reliability.
Packing and Shipping
167kVA Single Phase Pad Mounted Transformer
NPC ELECTRIC single-phase pad mounted transformers are designed to be securely packaged for sea freight transport, ensuring safe delivery across long distances.
For this purpose,the packing and shipping of a 167kVA Single Phase Pad Mounted Transformer adhere to strict standards to ensure safe handling and prevent damage during transit.
The transformer is securely placed on a robust wooden or steel pallet, providing a stable base for transportation. It is then wrapped in protective materials such as foam, shrink wrap, or rubber padding to cushion it from shocks, vibrations, and external impacts.
For added protection, especially in adverse weather conditions, a weather-resistant layer is applied to guard against moisture and dust.
During shipping, the transformer is clearly labeled with handling instructions, including the correct orientation and any safety precautions. If the transformer is being shipped over long distances, it is often placed inside a sealed container to prevent shifting and damage.
Additionally, the transformer is secured to ensure that it remains stable and undamaged throughout the transportation process, whether by road, rail, or sea. These packing and shipping measures guarantee the safe arrival of the transformer at its destination.
32
32 years of industry experience
Manufacturer Test
167kVA Single Phase Pad Mounted Transformer
Progress Test
NPC Electirc manufacture pad mounted transformer have the strict quality control. The progress test for a 167kVA Single Phase Pad Mounted Transformer involves a series of tests conducted during the manufacturing process to ensure the transformer meets design specifications and quality standards. Key tests typically include no-load testing to check the transformer’s voltage and current at idle, load testing to verify performance under rated load conditions, and short-circuit testing to assess the transformer’s behavior under fault conditions. Insulation resistance tests are also performed to ensure the transformer’s insulation system is safe and reliable. Additionally, temperature rise tests are conducted to verify that the transformer operates within acceptable temperature limits under full load. These tests help ensure the transformer’s functionality, safety, and efficiency before final inspection and delivery.
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
NPC Electric will tests made for quality control by the manufacturer on every device or representative samples, or on parts or materials as required, to verify during production that the product meets the design specifications.
The Transformer Factory Acceptance Test (FAT) for a 167kVA Single Phase Pad Mounted Transformer is a comprehensive series of tests conducted to ensure the transformer meets all technical specifications and quality standards before it leaves the factory. The FAT typically includes no-load testing to verify voltage levels and current, load testing to check performance under rated load conditions, and short-circuit testing to assess the transformer’s ability to handle fault conditions. Additional tests such as insulation resistance testing, temperature rise testing, and operational checks are performed to confirm the safety, reliability, and efficiency of the transformer. These tests also include verification of mechanical integrity, grounding, and protection features. The results of the FAT are documented and provide assurance that the transformer will perform as expected in real-world conditions.
Routine Test - Polarity 1-Ph
Purpose of Testing
The purpose of testing the polarity of a single-phase transformer is to ensure that the primary and secondary windings are correctly oriented, preventing issues like improper phase connection. It also verifies that the transformer operates safely and efficiently in the intended electrical system.
Testing Equipment
Test equipment: Polarity Tester (e.g. Megger, Hioki, etc.)
Voltage source: usually 500 V, 1000 V or customized as needed
Environmental monitoring: Temperature and humidity meter (records ambient temperature and humidity)
Voltage source: usually 500 V, 1000 V or customized as needed
Environmental monitoring: Temperature and humidity meter (records ambient temperature and humidity)
Pre-Test Preparation
Disconnect the device from the power supply and ensure that it is properly grounded and discharged.
Check the connection terminals and wiring to ensure that there is no looseness or contamination.
Test under suitable environmental conditions: relative humidity less than 75% and no rain (recommended temperature: 20-30°C).
Check the connection terminals and wiring to ensure that there is no looseness or contamination.
Test under suitable environmental conditions: relative humidity less than 75% and no rain (recommended temperature: 20-30°C).
Test Progress
Connect the Test Instrument:
Connect the test equipment to the bushing or terminal of the device under test and ensure proper grounding.
Apply Test Voltage:
Select the appropriate test voltage according to the rated voltage of the device. For single-phase systems, the applied voltage should comply with the equipment specifications (such as 220V or 380V, etc.).
Connect the test equipment to the bushing or terminal of the device under test and ensure proper grounding.
Apply Test Voltage:
Select the appropriate test voltage according to the rated voltage of the device. For single-phase systems, the applied voltage should comply with the equipment specifications (such as 220V or 380V, etc.).
Measure and Record
Start the test and record the following parameters:
Phase sequence: Confirm whether the phase sequence of the power supply is correct.
Polarity: Check whether the wiring meets the predetermined polarity (positive and negative terminals are connected correctly).
Voltage: The actual voltage value during the test.
Phase sequence: Confirm whether the phase sequence of the power supply is correct.
Polarity: Check whether the wiring meets the predetermined polarity (positive and negative terminals are connected correctly).
Voltage: The actual voltage value during the test.
Temperature Correction
Measure different wiring points (such as input and output) for comparative analysis to ensure that the electrical polarity is consistent.
Repeat Testing (if necessary)
If necessary, correct the measured parameters to the reference temperature (usually 20°C) to ensure the accuracy of the test results.
Evaluation Criteria (Reference)
Correct polarity: The wiring meets the expected polarity requirements and meets the standard. Reverse polarity: If reverse polarity occurs, it should be corrected immediately and retested. Polarity uncertainty: If there is any uncertainty, further check the power supply and wiring configuration.
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Residential areas, Commercial hubs, Transportation centers, Airports, industrial facilities, Corporate enterprises, Medical institutions, Educational establishments
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
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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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