ZMJ POWER
Pad Mount Transformer
Pad-Mount Transformer is a type of distribution transformer specifically designed for outdoor installation. These transformers are placed on a concrete pad or base, often located at ground level or slightly elevated, and are commonly used for power distribution in urban and suburban areas.
Technical Parameters
| Phrase | Three-phase |
| Rated Capacity | 200-2500 KVA |
| Rated Voltage | UP TO 35 KV |
| Secondary Voltage | 0.4 KV |
| Frequency | 50Hz / 60Hz |
| Winding Material | Copper / Aluminum |
| Standard | GB1094.1 (IEC60076) |
| Connection Symbol | Dyn11/Yyn0/YNd11 |
| Cooling Type | ONAN / ONAF |
| Running Environment | Highest temperature: +40℃ Highest daily average air temperature: +30℃ Highest annual average air temperature: +20℃ Lowest outdoor air temperature: -45℃ Altitude: ≤4000m |
Product Details
Questions and Answers
Pad-mounted transformers offer several advantages:
- Outdoor Installation: Designed for outdoor use, they can withstand various weather conditions and are installed on the ground, providing easy access for maintenance.
- Space Efficiency: They occupy minimal space and are suitable for installations where space is limited, commonly used in urban areas or locations where real estate is at a premium.
- Durability and Protection: Enclosed in weatherproof cabinets or enclosures, pad-mounted transformers are well-protected against environmental elements like moisture, dust, and temperature fluctuations, ensuring longer operational life.
- Flexibility: They come in various voltage and power ratings, catering to a wide range of distribution requirements, and can be customized for specific applications.
- Ease of Maintenance: While outdoors, these transformers are still accessible for maintenance, inspections, and repairs, allowing for easier servicing compared to larger substations.
- Reduced Fire Risk: They have built-in safety features, such as overcurrent protection devices and fuses, to reduce the risk of fire hazards and enhance overall safety.
- Localized Distribution: Pad-mounted transformers are often used for localized distribution, connecting medium-voltage power to low-voltage loads within a specific area or vicinity.
- Cost-Effectiveness: They can be a cost-effective solution for decentralized distribution systems or for providing power to individual buildings or facilities.
- Reliability: Well-designed pad-mounted transformers are known for their reliability, offering consistent performance in delivering electricity to end-users.
- Aesthetic Considerations: These transformers can be installed in residential or commercial areas without significantly impacting the aesthetic appearance of the surroundings due to their low-profile design.
These advantages make pad-mounted transformers a preferred choice for outdoor power distribution applications where space, durability, ease of maintenance, and reliability are crucial factors.
Pad-mounted transformers are suitable in various scenarios and environments, especially in the following circumstances:
- Outdoor Installations: When the transformer needs to be installed outdoors, pad-mounted transformers are the preferred choice due to their weatherproof enclosures and ability to withstand different environmental conditions.
- Urban Areas or Restricted Spaces: In densely populated areas or urban settings where space is limited, pad-mounted transformers offer a compact solution, allowing for efficient use of available space.
- Localized Distribution: For distributing power to specific areas or buildings within a larger network, pad-mounted transformers are effective in providing localized distribution, connecting medium-voltage lines to low-voltage loads.
- Ease of Access: When ease of access for maintenance and servicing is essential, pad-mounted transformers provide relatively easy accessibility compared to larger substations.
- Aesthetic Considerations: In residential or commercial areas where aesthetics are a concern, pad-mounted transformers have a low-profile design that blends better with the surroundings compared to larger substations.
- Safety Requirements: Where safety regulations or concerns regarding fire hazards are significant, pad-mounted transformers with built-in safety features, such as overcurrent protection, can be a suitable choice.
- Cost-Effectiveness: For decentralized distribution systems or applications requiring individual transformers for specific loads, pad-mounted transformers can be a cost-effective solution.
- Flexibility in Voltage Ratings: They come in various voltage and power ratings, providing flexibility in meeting different distribution requirements.
- Reliability: Pad-mounted transformers are known for their reliability and consistent performance, making them a viable choice for ensuring continuous electricity supply.
- Applications with Limited Space: In areas where larger substations or indoor installations are not feasible due to space constraints, pad-mounted transformers offer a practical solution.
In summary, pad-mounted transformers are ideal for outdoor installations, situations with limited space, localized distribution needs, and scenarios where ease of access, reliability, and compliance with safety regulations are essential considerations.
Routine Test
Measurement of winding resistance
Measurement of voltage ratio and check of phase displacement
Measurement of short-circuit impedance and loss
Measurement of no-load loss and current
Dielectric routine tests
Tests on on-load tap-changers, where appropriate
Leak testing with pressure for liquid-immersed transformers(tightness test)
Tightness tests and pressure tests for tanks for gas-filled transformers
Check of the ratio and polarity of built-in current transformers
Check of core and frame insulation for liquid immersed transformers with core or frame insulation
Type Test
Temperature-rise type test
Dielectric type tests
Determination of sound level for each method of cooling for which a guaranteed sound level is specified
Measurement of the power taken by the fan and liquid pump motors
Measurement of no-load loss and current at 90% and 110% of rated voltage
Special Test
Dielectric special tests
Winding hot-spot temperature-rise measurement
Determination of capacitances windings-to-earth, and between windings
Measurement of dissipation factor(tanδ) of the insulation system capacitances
Determination of transient voltage transfer characteristics
Measurement of zero-sequence impedance(s) on three-phase transformers
Short-circuit withstand test
Measurement of d.c. insulation resistance each winding to earth and between windings
Vacuum deflection test on liquid immersed transformers
Pressure deflection test on liquid immersed transformers
Vacuum tightness test on site on liquid immersed transformers
Oil Immersed Transformer:
650KVA＜ Rated Capacity ≤ 10MVA: 8504220000
Rated Capacity ≤ 650KVA: 8504210000
Dry Type Transformer:
Rated Capacity ＞ 500KVA: 8504349000
16KVA < Rated Capacity ≤ 500KVA: 8504339000
For orders of less than 5 transformers, we can usually deliver within 1 month. If the customer is particularly anxious or has special requirements, we can also handle it flexibly. Before signing a sales contract each time, we will agree on a delivery time with the customer based on the actual situation.