Ultra-isolation transformer for three-phase networks, reversible , includes electrostatic shield between the primary and secondary windings, providing galvanic separation of circuits that allows filtering and conducting unwanted signals and disturbances to ground, making it very effective when isolating machines and installations sensitive to electrical noise and with a high level of harmonics.
The effectiveness of this shield depends directly on the quality of the installation's grounding. The primary is connected in a delta connection and the secondary in a star connection with the neutral, providing a high degree of balance between the phases and generating a neutral at the output.
Dry-type transformer, protected against moisture by resin impregnation, cable glands included. Manufactured with low-loss magnetic sheeting, providing high performance. IP00 protection rating.
To generate or reference the neutral, it is necessary to ensure that you have an efficient ground connection.
The delta-wye configuration offers multiple advantages and is ideal for electrical distribution systems in industrial facilities. It allows for the supply of electrical equipment requiring balanced voltages with an available neutral, the elimination/reduction of harmonics, greater installation efficiency, and protection against ground faults. In the case of three-phase transformers with a delta-wye configuration and voltages of 400/400 V, it also allows for galvanic isolation, making it ideal for industrial and commercial applications where a stable and reliable power supply is required without modifying the line voltage, and where the same voltage must be maintained between the primary and secondary.
- Harmonic Reduction : The delta connection in the primary helps eliminate third-order harmonics by allowing them to circulate within the winding and preventing them from propagating to the grid, thereby reducing distortion in the electrical network and improving power quality.
- Power Supply Balance : On the primary side, currents are balanced even if the loads on the secondary side are not. This minimizes grid imbalance problems and improves system stability.
- Greater installation efficiency : This is because this configuration allows balanced loads to be supplied and maintains high energy efficiency.
- Ground fault protection : If a short circuit to ground occurs on the secondary side, the primary side helps limit the impact of the fault, protecting the transformer and reducing the risk of overloads and installation failures.
- Neutral availability in the secondary : Although the delta primary does not have a neutral, the star secondary does. This allows both three-phase (400V between phases) and single-phase (230V between phase and neutral) loads to be supplied. In networks where there is only one supply Three-phase transformer without neutral, this transformer allows for a stabilized neutral in the secondary. This facilitates the connection of loads that require a neutral reference.
- Galvanic Isolation between primary and secondary : Although both sides have the same voltage of 400V, the transformer provides electrical separation between the power supply and the load. This improves safety and helps reduce electrical noise problems.
Technical characteristics:
- Manufacturer:
- Reference: YL002305760
- Power: 3KVA
- Primary voltage: 400Vac
- Secondary voltage: 400Vac + N
- Apparent intensity: 4.3A
- Frequency: 50/60Hz
- Connection: Dyn11
- Dielectric strength between primary and secondary: 4600V
- Dielectric strength between primary and ground: 2300V
- Type: Dry
- Protection level: IP-00
- Protection class: I
- Insulation class: F
- Room temperature: 40ºC
- Cooling: Natural air
- Terminals: 6mm terminals
- Weight: 29Kg
- Regulation: Compliant with EN-61558-2-4
The transformer is supplied without any type of overload protection; it is mandatory to install them to avoid overloading the transformer.
The power and current indicated are apparent, the active current provided by the transformer will depend on the power factor of the connected load.
Professional use material, install in compliance with the regulations in force at the place of installation.
English 
Português PT
Adajusa SPAIN
Adajusa FRANCE
Adajusa ITALY
