3 Phase Oil Immersed Power Transformer 750KVA ±2x2.5% Tapping Range for Stable and Safe Power Supply

Meta Title:
S-M-750/13.8-0.48 Oil Immersed Distribution Transformer | 750KVA 60Hz 13800/480V | YNd11

Meta Description:
China manufacturer of Oil Immersed Distribution Transformer S-M-750/13.8-0.48. 750KVA rated capacity, 13800/480V, 60Hz, YNd11 connection, ONAN cooling. GB certified for industrial and commercial power distribution.

H1 Title:
S-M-750/13.8-0.48 Oil Immersed Distribution Transformer – 750KVA, 60Hz, 13800/480V, Three-Phase

Overview:
The S-M-750/13.8-0.48 Oil Immersed Distribution Transformer is a three-phase, 60Hz power distribution unit designed for step-down transformation in medium-voltage grids. Manufactured in China under GB certification, this unit delivers a rated capacity of 750KVA with primary and secondary voltages of 13800V and 480V respectively. The YNd11 connection group provides flexible grounding options, making it compatible with various power system configurations. Utilizing 25# transformer oil and ONAN (Oil Natural Air Natural) cooling method, the transformer ensures efficient heat dissipation and stable operation under continuous load conditions. Rated for ambient temperatures up to 28°C, this unit is suitable for indoor and outdoor installations across diverse climate zones.

Technical Specifications:
Parameter Specification
Product Model S-M-750/13.8-0.48
Rated Capacity 750 KVA
Phase Number 3-Phase
Rated Frequency 60 Hz
Rated Voltage 13800 / 480 V
Rated Current 31.4 / 902.1 A
Tapping Range ±2x2.5%
Connection Group YNd11
Ambient Temperature 28°C
Insulation Class A
Cooling Method ONAN (Oil Natural Air Natural)
Oil Grade 25# Transformer Oil
Certification GB Standards

Applications:
This 750KVA oil immersed distribution transformer is engineered for medium to large-scale power distribution networks. It is specifically suited for:

• Industrial Facilities: Provides reliable voltage step-down for manufacturing plants, processing units, and heavy machinery operations.

• Commercial Buildings: Ensures stable power supply for high-rise office towers, shopping malls, hospitals, and hotel complexes.

• Residential Communities: Supports underground distribution networks and community substations for large housing developments.

• Infrastructure Projects: Deployed in airports, railway stations, water treatment plants, and municipal utility projects.

• Renewable Energy Integration: Acts as a coupling transformer for solar farms and wind power collection systems requiring 480V distribution.

Key Features:

• High Capacity Rating: Rated at 750KVA with primary current of 31.4A and secondary current of 902.1A, supporting substantial load demands in industrial and commercial settings.

• Voltage Transformation: Converts 13800V primary input to 480V secondary output, suitable for standard industrial distribution voltages.

• Flexible Tapping: ±2x2.5% tapping range allows for voltage adjustment to accommodate grid fluctuations and load variations.

• YNd11 Connection Group: Delta-star configuration with neutral grounding on the low-voltage side, providing balanced phase shifting and compatibility with grounding protection systems.

• ONAN Cooling System: Oil Natural Air Natural cooling utilizes natural convection for heat dissipation, featuring cooling fins and radiators that transfer thermal energy from core and windings to ambient air without requiring external fans or pumps.

• Class A Insulation: High-grade insulation materials provide reliable protection against electrical breakdown and ensure long service life under normal operating conditions.

• 25# Transformer Oil: Provides superior dielectric strength and thermal conductivity, effectively dissipating heat and insulating internal components to prevent overheating and electrical faults.

• Ambient Temperature Rating: Designed for stable operation at temperatures up to 28°C, with robust construction to withstand varying environmental conditions.

Packaging and Logistics:
Packaging Method: Secured in heavy-duty wooden crates with foam cushioning and padding to prevent impact damage during inland and maritime freight. Each crate is clearly labeled with handling instructions and product identification for easy tracking.
Place of Origin: CHINA
Compliance: Designed and manufactured in accordance with GB standards, ensuring seamless integration into existing power distribution infrastructures.
Delivery Time: Subject to actual order quantity and production schedule. Please contact our sales team for confirmed lead time.
Pricing and Payment: To be negotiated based on order volume, technical specifications, and Incoterms.

Technical Support and After-Sales Services:

• Installation Guidance: On-site or remote technical assistance for proper installation and commissioning procedures.

• Maintenance and Troubleshooting: Rapid fault diagnosis and resolution via remote communication or field service visits.

• Operator Training: Customized training programs for engineering and maintenance teams to ensure safe and efficient operation.

• Spare Parts Supply: Genuine replacement parts available for all transformer components, including bushings, tap changers, and cooling elements.

• On-Site Repair: Quick-response repair services to minimize downtime and restore operational continuity.

• Remote Monitoring Support: Integration assistance for digital substation monitoring and predictive maintenance systems.

3 Phase Oil Immersed Power Transformer 750KVA ±2x2.5% Tapping Range for Stable and Safe Power Supply Images