Product Introduction
Hebei Hozee Electric Co., Ltd. customizes and manufactures 15KVA single-phase pole mounted transformers for Honduran clients. This transformer is designed for application in Honduras' 34,500V power grid and adopts a subtractive polarity configuration. It fully complies with relevant energy efficiency standards.
Scope of supply
Product: Single-phase pole mounted transformer
Phase Configuration: Single phase
Rated Power: Up to 333 kVA (single phase)
Primary Voltage: Up to 34,500V
Secondary Voltage: 120/240V
Frequency: 60Hz
Customizable Production: Available
Customizable production
With the evolving power supply environment and diversified power demand, specialized transformers are essential to meet specific operational requirements. Our company offers customized transformer solutions tailored to client specifications. Upon receiving the technical documents provided by the client, our technical team will issue a technical response within 24-48 hours. After the technical documents are finalized and confirmed, prototype production can be completed in approximately 10 days for client approval. The delivery time for bulk orders is negotiable between both parties.
Electrical parameter requirements for single-phase pole mounted transformers in Honduras
|
Capacity |
HV |
LV |
No Load Losses, |
Load Losses W |
Energy efficiency |
Impedance |
No-load current |
|
15KVA |
34,500/19,920V 34,500/19,920V |
120/240V 120/240V |
≤55 |
≤140 |
98.7% |
1.5-2.5% |
1.5% |
|
75KVA |
≤155 |
≤670 |
98.9% |
1.5-2.5% |
1.5% |
Transformer Process Flow Diagram
Transformer drawings
Engineers at Hozee Electric design transformer drawings in strict accordance with clients' energy efficiency requirements. To meet these high standards, we use grain-oriented silicon steel (grade B20P70) supplied by Baoshan Iron & Steel Group for the low-loss iron cores. This ensures that critical parameters such as no-load losses and no-load current fully meet the specified requirements.
Assembly of single-phase transformer
FAQ
Q: What is your delivery time
A: After the drawings are confirmed, products can be delivered within 30 days. For special circumstances, prior communication is required.
Q: Why is there a distinction between additive polarity and subtractive polarity for single-phase transformers?
A: In power distribution systems, when multiple transformers are operated in parallel to supply power, it is crucial to ensure consistent polarity (subtractive polarity is the industry standard). If there is a polarity mismatch (e.g., one transformer with subtractive polarity and another with additive polarity), the secondary voltages of the two transformers will have a 180° phase difference, resulting in a voltage difference twice the rated voltage. This will induce a massive circulating current in the windings, which can instantly burn out the transformer windings and insulation, and may even cause a power grid short circuit.
Q: Why do oil-immersed transformers require 24 hours of standing before commissioning?
A: The core objective of allowing oil-immersed transformers to stand for 24 hours prior to installation and commissioning is to ensure internal insulation stability, eliminate operational risks, and ensure long-term reliable operation. The key reasons are as follows:
1. Air Removal: Vibration during transportation can cause air to mix with the insulating oil, forming bubbles. These bubbles can lead to partial discharge under high voltage. Standing allows the bubbles to rise to the conservator and be discharged, eliminating this hazard.
2. Full Insulation Impregnation: During the standing period, insulating oil seeps into the pores of the windings and insulating paper through gravity and capillary action, forming a complete protective layer. This avoids insulation failure caused by "dry areas" in the insulation materials.
3. Component Stabilization: Transportation may cause displacement of internal components such as windings or leads. Standing allows these components to reset and balances the stress on fasteners, preventing mechanical damage caused by the superposition of electromagnetic and mechanical stresses after commissioning.
4. Status Verification: A stabilized oil level enables accurate inspection. Additionally, the standing period facilitates leak testing of tank joints and valves, preventing oil leakage and overheating during operation.
Hot Tags: 15kva single-phase pole mounted transformer, China 15kva single-phase pole mounted transformer manufacturers, suppliers, factory, 100 Kva Single Phase Transformer, 10kva Single Phase Transformer, 167 Kva Single Phase Transformer, 25 Kva Pole Mounted Transformer, 37 5 Kva Single Phase Transformer, single phase pole mounted transformer
