Single-Phase Isolation Transformer EI Power Supply Transformer 0V
145V160V 220V
1.Product Description
Zhixiangyuan Electronics has launched a new high-performance
single-phase EI type isolation transformer. This product is
designed specifically for the protection, maintenance, debugging,
and elimination of clutter interference of precision instruments,
providing four sets of tap voltage outputs of 0V, 145V, 160V, and
220V. Adopting high-quality EI silicon steel laminated structure,
it has the characteristics of high efficiency, low magnetic
leakage, and low no-load loss, making it an ideal power solution
for industrial equipment and audio DIY fields.
Core Highlights:
1. Multi voltage flexible output:
Supports multi-level voltage selection of 0V-145V-160V-220V (input
side calculated according to standard 220V/50Hz), which can adapt
to different national equipment voltage standards and various
maintenance and testing scenarios. It is versatile and does not
require frequent transformer replacement.
2. Pure isolation, safer:
The input and output electrical are completely isolated,
effectively filtering out high-frequency interference, surges, and
harmonics in the power grid, protecting backend precision
electronic equipment from mains pollution, and improving the safety
of maintenance operations.
3. Advantages of EI architecture:
Low leakage flux: Compared to toroidal transformers, EI type has
better natural suppression of high-frequency crosstalk.
Anti saturation: The iron core is less prone to magnetic saturation
and has stronger adaptability to power grids with more DC
components.
Strong overload capacity: The instantaneous overload bearing
capacity is better than that of ordinary toroidal transformers.
4. Precision manufacturing:
Adopting high magnetic conductivity cold-rolled oriented silicon
steel sheets, the stacking is compact and the loss is low.
Pure copper coil winding, with low resistance and low heat
generation.
Vacuum immersion insulation treatment, moisture-proof, rust proof,
and low-noise.
2.Performance Characteristics
| Feature Category | Specification / Description |
| Product Type | Single-Phase EI Isolation Transformer |
| Output Voltage Options | 0V / 145V / 160V / 220V (Multi-tap) |
| Transformer Core | High-grade Cold-Rolled Grain-Oriented Silicon Steel (EI lamination) |
| Winding Material | 100% Copper windings (low resistance, low heat generation) |
| Isolation Type | Input to Output fully isolated (Galvanic isolation) |
| Noise Filtering | Effectively suppresses high-frequency harmonics, surges, and grid
noise |
| Magnetic Characteristics | Low magnetic flux leakage, high resistance to core saturation |
| Efficiency | High efficiency with low no-load loss |
| Overload Capacity | Excellent momentary overload tolerance |
| Insulation Treatment | Vacuum impregnated varnish coating (moisture-proof, anti-rust, low
noise) |
| Operating Frequency | 50Hz / 60Hz (adaptive) |
| Cooling Method | Natural air cooling |
| Safety Protection | Electrical separation provides short-circuit for maintenance work |
| Typical Applications | Industrial control panels, tube amplifier (valve amp) DIY, imported
equipment adaptation, lab test benches, safe repair sockets (for
hot chassis circuits) |
| Customization | Voltage, power rating, dimensions, and lead wire methods are
customizable |
