EI Transformer Dimensions Chart: Size vs. Power Rating Comparison
May 02,2025 | nretec
TRANSFORMERS FOR UPS INDUSTRY
| Item | Power | Voltage Range | Operating Frequency | Insulation Class | Approval |
|---|---|---|---|---|---|
| EI66-86 | 100-800VA | 0-268VAC | 50/60Hz | B/F/H | UL Insulation System Class 130(B) Class 155(F) Class 180(H) |
| EI86-105 | 600-2KVA | 0-268VAC | 50/60Hz | B/F/H | |
| E105-114 | 1KVA-3KVA | 0-268VAC | 50/60Hz | B/F/H | |
| EI114-133 | 3KVA-5KVA | 0-268VAC | 50/60Hz | B/F/H | |
| EI133-162 | 5KVA-10KVA | 0-268VAC | 50/60Hz | B/F/H | |
| EI162-228 | 8KVA-15KVA | 0-268VAC | 50/60Hz | B/F/H |
EI Transformer Dimensions and Power Rating Guide
The table above shows the relationship between different EI transformer models and their corresponding power ranges. EI transformers are key components in UPS systems, and the appropriate transformer size can be selected based on different power requirements. All models support a voltage range of 0-268VAC and an operating frequency of 50/60Hz, meeting international insulation class standards.
Insulation Class Information
Class B Insulation: Suitable for 130°C environments
Class F Insulation: Suitable for 155°C environments
Class H Insulation: Suitable for 180°C environments
Selection Guide
When selecting an appropriate UPS transformer, please refer to the table above based on your power requirements. For example, for applications requiring 3KVA-5KVA power, the EI114-133 model transformer is recommended.
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