Denki Keiki Co.
Denki Keiki Co., Ltd. NRT Series Transformers for Preventing Interference Waves

Manufacturer: Denki Keiki Co., Ltd.
Model: NRT Series
Features
- The most suitable coil winding structure for the transformer’s performance and economic design is adopted by the NRT series, resulting in large-capacity, low-cost, high-quality electric transformers.
- Noise suppression in common modes is enhanced by the incorporation of normal-mode and differential-mode noise removal functions.
- Electromagnetic interference is effectively suppressed, even in cases where noise propagation through general circuits or connection points is uneven.
- Complete protection against input and output disturbances or misapplications is provided by the product.
- Highly advanced technologies for electric insulation, electromagnetic noise reduction, and special manufacturing processes are utilized to ensure the highest performance and reliability.
- With the rapid progress in miniaturization and high efficiency of electronic devices, low-voltage power supplies and high-frequency technology are effectively utilized.
- The difficulties in noise countermeasures are reduced, and the technology that maintains noise isolation is improved.
- The NRT series plays a major role in EMI/EMC countermeasures, with filters and shield technologies focused on enhancing electromagnetic interference suppression for high-efficiency performance.
Specifications

| Applicable Standard | JEC-2200 |
| Usage Specification | Continuous rated |
| Ambient Temperature | -5°C to 40°C (no condensation) |
| Number of Phases | Single-phase |
| Rated Frequency | 50/60Hz |
| Rated Capacity | 300VA, 500VA, 1kVA, 1.5kVA, 2kVA, 3kVA, 5kVA |
| Rated Voltage | F110-R100/100V, F220-R200/100V, F220-R200/200V, F440-R400/100V |
| Insulation Class | 300VA-2kVA F class |
| Connection Terminals | T Type 1 terminal (primary side), C Type 1 terminal (primary side), 2 terminals (secondary side) |
| Fuse Plate | English |
| Order Product | Three-phase types and capacity products, etc. |
◆Circuit Diagram

◆ Standard Model Type
| Rated Capacity (VA) | P:110-100V | P:220-200V | P:220-200V | P:440-400V |
| T Type | ||||
| 300 | NRT-307T11 | NRT-307T22 | NRT-307T41 | |
| 500 | NRT-507T11 | NRT-507T21 | NRT-507T41 | |
| 1k | NRT-107T11 | NRT-107T21 | NRT-107T41 | |
| 1.5k | NRT-150T11 | NRT-150T21 | NRT-150T41 | |
| 2k | NRT-200T11 | NRT-200T21 | NRT-200T41 | |
| 3k | NRT-300T11 | NRT-300T21 | NRT-300T41 | |
| 5k | NRT-500T11 | NRT-500T21 | NRT-500T41 | |
| C Type | ||||
| 300 | NRT-307C11 | NRT-307C21 | NRT-307C41 | |
| 500 | NRT-507C11 | NRT-507C21 | NRT-507C41 | |
| 1k | NRT-107C11 | NRT-107C21 | NRT-107C41 | |
| 1.5k | NRT-150C11 | NRT-150C21 | NRT-150C41 | |
◆Interference Wave Suppression Transformer (Type B, Type F)



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