Manufacturer: Denki Keiki Co., Ltd.
Model: High-voltage Molded Transformer
Features
- A power transformer is used to operate the main switch, on/off indicators, and on/off controls of high-voltage power distribution panels.
- The key feature of this product lies in its design, which reduces voltage fluctuations at each load power factor.
- This design enhances the instantaneous capacity when the circuit breaker is closed.
- Higher switching capacities can be selected due to the increased instantaneous capacity provided by this product.
Specifications
| Model | Rated Voltage | Capacity (kVA) | Insulation Strength | Frequency | Current Limiting Fuse | Weight (kg) |
| ETS-1KHD | 3300 / 110V | 1 | LI 45kV AC 16kV | 50 / 60Hz | 3.6kV 1A | 23 |
| ETS-3KHD | 3300 / 110V | 3 | LI 45kV AC 16kV | 50 / 60Hz | 3.6kV 2A | 42 |
| ETS-5KHD | 3300 / 110V | 5 | LI 45kV AC 16kV | 50 / 60Hz | 3.6kV 2A | 67 |
| ETS-1KEDF | 6600 / 110V | 1 | LI 60kV AC 22kV | 50 / 60Hz | 7.2kV 1A | 23 |
| ETS-3KEDF | 6600 / 110V | 3 | LI 60kV AC 22kV | 50 / 60Hz | 7.2kV 2A | 42 |
| ETS-5KEDF | 6600 / 110V | 5 | LI 60kV AC 22kV | 50 / 60Hz | 7.2kV 2A | 67 |
| ETS-1KED | 6600 / 110V | 1 | LI 60kV AC 22kV | 50 / 60Hz | None | 23 |
| ETS-3KED | 6600 / 110V | 3 | LI 60kV AC 22kV | 50 / 60Hz | None | 42 |
| ETS-5KED | 6600 / 110V | 5 | LI 60kV AC 22kV | 50 / 60Hz | None | 67 |
◆Characteristics of the transformer for operation use
- This device is a transformer used for high-voltage side and low-voltage side operation, which is necessary for equipment such as the main circuit breaker and operation panel.
- The transformer is designed to operate at high voltage with a high training tolerance, requiring high reliability and performance in operation.
- Special attention is paid to the performance and durability of the equipment. It is designed to function efficiently and be used for various applications with high load capacities.
- In addition, the product can be customized to meet individual needs, and it has been tested with high reliability under several conditions to ensure that it performs effectively.
◆Wiring Diagram

◆Double Series Switching Method
| Terminal Switch | Secondary Output Voltage |
| 1-4 | 220V |
| 2-3 | 210V |
| u-1 · 4 – v | 110V |
| u-2 · 3 – v | 105V |
◆Single-phase Three-wire Method
| Neutral Point | Secondary Output Voltage |
| 1-4 Jumper | 110V-0V-110V |
| 2-3 Jumper | 105V-0V-105V |
◆Single-phase, High-voltage Operation Molded Transformer


| Capacity (kVA) | A | B | D | E | F | H | MJ | Weight (kg) |
| 1 | 245 | 270 | 102 | 215 | 200 | 290 | 5 | 23 |
| 3 | 290 | 340 | 110 | 260 | 260 | 330 | 6 | 42 |
| 5 | 330 | 380 | 110 | 305 | 300 | 350 | 6 | 67 |