Three Phase Pad Mounted Transformer
Three Phase Pad Mounted Transformer
Three phase pad mounted transformers are applicable to the latest ANSI, DOE, IEEE, CSA standards. UL listing with all specifications. Fast lead time of 6-10 weeks. The production capacity of more than 500 units per month. Various well-known brand accessories are available (ABB, Eaton, Qualitrol, ect.) Custom designs can be made for your 3 phase pad mounted transformer to meet your various needs. Daelim's transformers are safe and environmentally friendly, beautiful in appearance, tamper-proof, economical, etc. The high voltage is from 7.2kV to 44kV, and the capacity is up to 10mva. It is widely used in digital centers, solar energy, wind energy, energy storage, industry and construction industries.
Certificates
The 3-phase pad-mounted transformers manufactured by Daelim have successfully undergone testing and certification by authoritative organizations such as UL, CSA, CESI, SGS, and others.
Daelim's ULcUL-listed 3-phase pad-mounted transformer series includes the following power ratings:
- 15kV with a power rating of up to 4000kVA
- 25kV with a power rating of up to 20MVA
- 35kV with a power rating of up to 10MVA
Daelim three phase pad mounted transformers fully meet or exceed ANSI/IEEE, CSA, IEC, DOE and other standards, these certifications ensure compliance with safety and performance standards, providing assurance to customers worldwide.
Send Inquiry Now3-Phase Pad mounted transformer Specification
kVA | HV | LV | Total weigh | oil weight |
75 kVA | 25000Delta | 480GrdY/277 | 1,400Kg | 540KG |
100 kVA | 24900GrdY/14400 | 600V | 729KG | 138KG |
150 kVA | 14400V | 600GrdY/347 | 2400kg | 750L |
200 kVA | 13800V | 380GrdY/220 | 2000kg | 250kg |
225 kVA | 4160Delta | 347GrdY/600V | 2500KG | 850L |
300 kVA | 34500V | 208GrdY/120 | 2300kg | 1025L |
500 kVA | 24940DELTA×12470DELTA | 208GrdY/120 | 3050kg | 1170L |
625 kVA | 13,800Delta | 480GrdY/277V | 2000KG | 520KG |
750 kVA | 24940GrdY/14400 | 800GrdY/462 | 3100Kg | 920L |
1,000 kVA | 13,200DELTA | 480GrdY/277 | 8,360lbs | 310GAL |
1,250 kVA | 25000V | 416V | 4000kg | 1250L |
1,500 kVA | 4160GRDY/2400 | 600GrdY/347 | 4300kg | 1400L |


Three Phase Pad mounted transformer Specification
kVA | HV | LV | Total weigh | oil weight |
1,700 kVA | 13,800Delta | 480GrdY/277V | 4600Kg | 1050L |
2,000 kVA | 4160DELTA | 415GrdY/240 | 4600Kg | 1280L |
2,500 kVA | 25000DELTA | 600GrdY/347 | 5850Kg | 1680L |
2,550 kVA | 12470DELTA | 415GrdY/240 | 5800Kg | 1750L |
2600 kVA | 34500DELTA | 416GrdY/240 | 6350Kg | 1940L |
2800 kVA | 21000V | 480V | 13669lb | 489gal |
3000 kVA | 13800V | 415V | 6700Kg | 1885L |
4000 kVA | 34,500DELTA | 12,470DELTA | 9,500Kg | 3560L |
5000 kVA | 22860GrdY/13200 | 4160GrdY/2400 | 9100Kg | 2435L |
7000 kVA | 27,600DELTA | 13,800DELTA | 11600kg | 2820L |
7500 kVA | 249400DELTA | 4.16kv Wye | 12000 Kg | 3000KG |
10000 kVA | 24900GrdY/14400 | 600V | 15000Kg | 3000L |
Live front vs Dead front transformer
The main difference between a Dead Front Transformer and a Live Front Transformer lies in their high-voltage bushing design:
Dead Front Transformer: In a dead front transformer, the high-voltage bushing is separate and consists of a bushing well and a load break bushing insert. Both the bushing well and the load break bushing insert are insulated. High voltage cables are connected to the transformer using a deadbreak elbow connector. As a result, there are no exposed electrical components in the high-voltage section when the transformer is energized. This design minimizes the risk of accidental contact or electric shock.
Live Front Transformer: In a live front transformer, the high-voltage bushing is typically a one-piece spade type made of materials such as porcelain or epoxy. At the end of the bushing, there are usually 2-4 holes. High voltage cables are connected to these holes using a mechanical lug or a crim plug. Unlike the dead front transformer, the high-voltage bushing in a live front transformer is completely exposed. In cases where the bushing has moisture, oil, or dust, there is a possibility of generating an arc, which can pose a safety hazard.
These differences in high-voltage bushing design between dead front and live front transformers highlight the contrasting approaches to safety and insulation. Dead front transformers provide an additional layer of protection by separating the high-voltage bushing and using insulated components, reducing the risk of accidental contact or electrical shock. Live front transformers, on the other hand, have an exposed high-voltage bushing, making them potentially more susceptible to issues like arcing when exposed to moisture, oil, or dust.
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Why Choose Daelim 3 Phase Pad Mounted Transformers
1. Daelim offers a comprehensive range of UL-listed 3 phase pad mounted transformers with a capacity range of 15-35kV and up to 10MVA.
2. Enjoy a quality assurance period of up to 24 months for added peace of mind.
3. Experience fast turnaround times with Daelim's 3 phase pad mounted transformer drawings, typically provided within 1-2 weeks.
4. Daelim's local after-sales service teams are available in the United States, Canada, Mexico, Ecuador, and other countries.
5. Fast delivery of three phase pad mounted transformer(6-8weeks)
Pad Mounted Transformer Diagram

Loop Feed Transformer Diagram
