Product Specification

1.Product Overview

The HENTG POWER 1500 kVA 35kV/0.415kV Three-Phase Oil-Immersed Transformer is designed for reliable medium voltage power distribution in industrial plants, commercial facilities, substations, and infrastructure projects.

This 1.5 MVA oil-filled transformer with ONAN cooling system is suitable for 35kV or 33kV distribution networks and steps down voltage to 415V for low-voltage applications.

Engineered according to IEC standards, this outdoor distribution transformer provides stable voltage output, low loss performance, and long service life, making it ideal for Ghana’s coastal, high humidity, and high altitude environments.

SEO Keywords included:
1500 kVA transformer, 1.5 MVA transformer, 35kV transformer, 33kV transformer, 0.415kV transformer, oil immersed transformer, ONAN transformer, outdoor power transformer, medium voltage distribution transformer supplier.

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2. Key Selling Points

• Rated Power: 1500 kVA / 1.5 MVA
• Voltage Ratio: 35kV / 0.415kV (customizable to 33kV)
• Three-Phase Oil-Immersed Type
• ONAN Cooling System
• Low No-Load & Load Loss
• Strong Short-Circuit Withstand Capacity
• Designed for Coastal & High Humidity Areas
• Suitable for High Altitude Installation
• Outdoor Ground Mounted Design
• IEC Standard Manufacturing

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3. Technical Features & Detailed Specifications

Rated Capacity: 1500 kVA
High Voltage: 35 kV (33 kV optional)
Low Voltage: 0.415 kV (415 V)
Frequency: 50 Hz
Vector Group: Dyn11 (or as required)
Cooling Method: ONAN (Oil Natural Air Natural)
Installation: Outdoor / Ground Mounted
Insulation Class: Class A
Winding Material: High conductivity copper or aluminum
Core Material: High-grade silicon steel for reduced core loss
Tap Changer: Off-load tap changer ±2×2.5% or ±5%
Impedance Voltage: As per IEC standard or project requirement
Oil Type: Mineral insulating oil (FR3 optional)
Protection: Suitable for tropical and high humidity environment

Standard Accessories:
• Buchholz relay
• Pressure relief valve
• Oil level indicator
• Oil temperature indicator
• Silica gel breather
• Drain valve
• Lifting lugs

Surface Treatment:
• Sand blasting
• Anti-corrosion primer
• Double-layer weather-resistant top coating
• Designed for coastal salt air conditions

Applications:
• Utility substations
• Government infrastructure projects
• Mining sites
• Cement plants
• Commercial complexes
• Industrial factories
• Renewable energy grid connection

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4. Pain Points & Solutions – Ghana Market

Problem 1: Coastal High Humidity & Salt Corrosion
Ghana’s coastal regions such as Accra and Takoradi experience high humidity and salt air, which can accelerate rust and oil tank corrosion.

Our Solution:
We apply enhanced anti-corrosion coating system and reinforced tank sealing structure to prevent moisture ingress and corrosion damage.

Problem 2: High Altitude Installation (Mining Areas)
Certain inland mining areas have higher altitude, affecting cooling efficiency.

Our Solution:
We optimize cooling design and adjust temperature rise margins to ensure safe operation even in high altitude environments.

Problem 3: Unstable Grid & Voltage Fluctuation
Voltage fluctuation is common in developing distribution networks.

Our Solution:
Off-load tap changer allows voltage adjustment. Strong short-circuit design improves grid stability performance.

Problem 4: High Ambient Temperature
Operating temperatures often reach 40°C.

Our Solution:
ONAN cooling system with optimized oil circulation ensures stable temperature rise control and longer insulation life.

Problem 5: Limited Maintenance Resources
Some project sites have limited technical support.

Our Solution:
Low-loss design reduces thermal stress. High-quality materials extend service life and reduce maintenance frequency.

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5. FAQ – For Ghana Distributors & EPC Contractors

Q1: Can this transformer be used in Ghana’s 33kV network?
Yes. The transformer can be customized to 33kV or 35kV according to local grid requirements.

Q2: Is it suitable for coastal installation?
Yes. It is designed with anti-corrosion coating and sealed structure for high humidity and salt air.

Q3: Can it operate under 40–45°C ambient temperature?
Yes. It is engineered for tropical climate conditions.

Q4: Do you provide full technical documentation for EPC projects?
Yes. We provide GA drawings, wiring diagrams, test reports, and nameplate details.

Q5: What is the delivery time?
Normally 30–45 days depending on final technical specification.

Q6: Can distributors get OEM support?
Yes. We support branding, customized nameplate, and long-term distributor cooperation.

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6. About HENTG POWER

HENTG POWER is a professional transformer manufacturer specializing in oil-immersed transformers, dry-type transformers, and medium voltage distribution equipment.

We export to Africa, Southeast Asia, and the Middle East, supporting government projects, EPC contractors, and local distributors.

Our Manufacturing Strength:
• Advanced transformer design engineering team
• Modern production workshop
• Strict quality control process
• Complete routine testing before shipment
• IEC standard compliance
• Custom voltage and project solutions

Annual production capacity covers small distribution transformers up to large power transformers for industrial applications.

HENTG POWER – Reliable Power Solutions for Global Markets.