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4 kVA 230/230V+N single-phase neutral-generating transformer with IP23 enclosure – two-phase networks
379,23€
TAXES INC.
- Power: 4 kVA (4000 VA) · 17.4 A at 230 V
- Entry: 230 Vac between phases (two-phase mains supply without a neutral)
- Exit: 230 Vac + N, neutral connectable to earth
- Dry-type, galvanic isolation and electrostatic shielding
- It allows the connection of grid-tied and hybrid inverters that require a phase and neutral
- Dimensions 340×310×360 mm · 35 kg · IP23 · EN 61558-2-4
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Details of the 4 kVA 230/230V+N single-phase neutral-generating transformer with IP23 enclosure – two-phase networks
4 kVA neutral-generating transformer – FVC-TRAN4000
In many homes and industrial premises in Spain, the service connection is still a biphasic network: there are two phases, and between them there is 230 V, but there is no neutral nor a conductor earthed. Grid-connected photovoltaic inverters, hybrid systems and inverter/chargers require a phase and a neutral, and many also check that the neutral is earthed. When connected directly to a two-phase grid, they will display an insulation, neutral or earth fault error and will not start up.
This isolation transformer with neutral generator It solves the problem: it takes the 230 V between phases from the two-phase mains supply and outputs 230 V at its secondary terminal, with a neutral (N) terminal that is connected to the installation’s earth. The inverter thus sees a conventional single-phase phase-neutral mains supply, with the neutral referenced to earth.
When you need it
- Self-consumption installations in homes with a two-phase electricity supply (common in old town centres and rural areas).
- Hybrid inverters and inverter/chargers that require a neutral point earthed.
- When you want galvanic isolation between the mains supply and the installation.
How to choose the power rating
Choose a transformer with a power rating equal to or greater than the maximum AC power that will pass through it: the inverter’s rated power and, in the case of hybrid units or inverter/chargers, also the power drawn from the mains to charge batteries and power loads. This 4 kVA model can handle around 17.4 A continuous current at 230 V. If you are unsure between two sizes, choose the larger one.
Technical specifications
| Model | TRAN4000 |
| Rated power | 4 kVA (4,000 VA) |
| Rated current at 230 V | 17.4 A |
| Input voltage | 230 VAC |
| Output voltage | 230 Vac + N |
| Type | Dry, single-phase, insulated |
| Electrostatic screen | Yes (must be earthed) |
| Frequency | 50/60 Hz |
| Degree of protection | IP23 (indoor installation) |
| Thermal insulation class | F (155 °C) |
| Thermal class of windings | HC (200 °C) |
| Varnishing | Yes |
| Refrigeration | ANAN (air-dried) |
| Insulation test | 4 kV |
| Ambient temperature | < 40 °C |
| Working altitude | ≤ 1,000 metres above sea level. |
| Dimensions (A × B × C) | 340 × 310 × 360 mm (mounting distance D: 242 mm) |
| Weight | 35 kg |
| Regulations | EN 61558-2-4 · REACH and RoHS |
Installation
- Mains: the two phases of the two-phase circuit (230 V between them), protected by its circuit breaker.
- Secondary: phase and neutral to the inverter; the secondary N terminal is connected to the installation earth to establish the neutral reference.
- The electrostatic screen must always be earthed.
- IP23 unit: install indoors, in a dry, well-ventilated place, leaving space around it to allow for natural cooling.
- Installation must be carried out by an authorised installer in accordance with the REBT.
Not sure what power rating you need, or whether your network is two-phase? Drop us a line with your inverter model and we’ll help you choose.
Weight and dimensions
| Weight | 36 kg |
|---|---|
| Dimensions | 38 × 35 × 40 cm |
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