150kVA Three Phase Open Type Isolation Transformer Installed in Zambia Manufacturing Plant
Project Overview
Location: Zambia
Industry: Copper Processing Factory
Product:
150kVA Three Phase Open Type Isolation Transformer
Input Voltage: 415V
Output Voltage: 380V
Frequency: 50Hz
Cooling Method: AN (Air Natural)

Customer Challenge
The customer experienced frequent voltage fluctuations caused by unstable grid conditions.
Sensitive automation equipment including:
- PLC systems
- Variable Frequency Drives (VFD)
- Motor control systems
were affected by power quality issues.
The customer required a reliable transformer solution capable of:
- Voltage stabilization
- Electrical isolation
- Continuous industrial operation

TNNPI Solution
After evaluating the site conditions, TNNPI engineers recommended:
150kVA Copper Winding Open Type Isolation Transformer
Features:
- 100% copper conductors
- High efficiency silicon steel core
- Low noise operation
- Reinforced insulation design
- Stable voltage output
The transformer was customized according to the factory's electrical specifications and delivered within the project schedule.
Installation Process
The installation included:
- Foundation preparation
- Transformer positioning
- Input/output cable connection
- Grounding verification
- Load testing
- Commissioning
The complete installation was completed within one working day.
Project Results
After commissioning:
Stable voltage supply
Reduced equipment downtime
Improved power quality
Increased production efficiency
Lower maintenance costs
The customer reported significant improvement in system reliability and plans to expand transformer purchases for future production lines.
Why Customers Choose TNNPI
- Factory-direct pricing
- Customized voltage solutions
- IEC / ANSI compliant designs
- Fast delivery
- Export experience in 60+ countries
- Professional engineering support