Why Choose the ETE DV400P6S6 400 VA Dual-Input Control Transformer?
The ETE DV400P6S6 is a versatile 400 VA single-phase industrial control transformer designed to convert either a 240 V AC or 415 V AC primary supply into a nominal 24 V AC secondary output. Manufactured by Eastern Transformers & Equipment (ETE), this model forms part of the established ETE DV dual-input-voltage stock control transformer range, developed for electrical panel builders, OEM machinery manufacturers and industrial automation applications requiring a dependable low-voltage AC control supply.
Featuring a 0/240/415 V primary terminal arrangement, the DV400P6S6 allows installers to select the correct primary connection for the available supply voltage. Its 0/24 V secondary terminals provide a nominal 24 V AC output for compatible contactors, relays, control devices and auxiliary electrical equipment. This dual-input design offers flexibility for industrial machinery and control panels intended for different electrical supply configurations.
With a substantial 400 VA apparent power rating, Class E insulation and 8% voltage regulation, the ETE DV400P6S6 provides a practical solution for control systems requiring a dedicated 24 V AC supply. The DV transformer range incorporates continuous-duty construction, IP20 touch-proof terminals, Class H varnish impregnation and a core earth connection for industrial electrical installations.
The DV400P6S6 measures 120 × 108 × 120 mm and weighs 5.5 kg. Its specified EPH 3 or EPN 2 enclosure references provide options for suitably enclosed installations, making this transformer a practical choice for machinery panels, electrical control cabinets and industrial automation systems.
Key Advantages
- Dual-input-voltage flexibility: Supports either a 240 V AC or 415 V AC primary supply.
- 24 V AC secondary output: Provides a nominal low-voltage AC supply for compatible industrial control equipment.
- 400 VA rated capacity: Suitable for control circuits with substantial combined 24 V AC load requirements.
- Single-phase construction: Designed for single-phase industrial control transformer applications.
- Selectable primary connections: 0/240/415 V terminals accommodate the two specified input voltages.
- Single-voltage secondary: 0/24 V terminals simplify integration into compatible control systems.
- Continuous-duty design: Intended for sustained operation within specified limits.
- Class E insulation: Supports the transformer's electrical insulation requirements.
- 8% voltage regulation: Provides a defined regulation characteristic for load assessment.
- IP20 touch-proof terminals: Help reduce accidental contact with live terminal parts.
- Class H varnish impregnation: Provides protective treatment for the transformer windings.
- Core earth connection: Supports protective earthing within a correctly designed installation.
- 50/60 Hz operation: Suitable for the specified AC supply frequencies.
- Industrial dimensions: 120 × 108 × 120 mm for electrical panel planning.
- Enclosure options: EPH 3 or EPN 2 references are specified for this model.
Key Features
- ETE DV dual-input-voltage control transformer series.
- 400 VA rated apparent power.
- Single-phase transformer configuration.
- 240 V AC or 415 V AC selectable primary input.
- 0/240/415 V primary terminal arrangement.
- 0/24 V secondary terminal arrangement.
- 24 V AC nominal output connection.
- 50/60 Hz rated operating frequency.
- Continuous-rated control circuit transformer.
- Class E electrical insulation.
- 8% specified voltage regulation.
- IP20 touch-proof connection terminals.
- Class H varnish-impregnated construction.
- Dedicated core earth connection.
- Dual-voltage primary and single-voltage secondary.
- 120 × 108 × 120 mm overall dimensions.
- 5.5 kg specified weight.
- EPH 3 or EPN 2 enclosure references.
The ETE DV400P6S6 is designed for industrial electrical installations where the available primary supply may be either 240 V AC or 415 V AC. Its tapped primary winding features 0/240/415 V terminals, allowing the correct input connection to be selected during installation. When supplied through the appropriate primary terminals, the transformer provides a nominal 24 V AC secondary output through its 0/24 V terminals.
This dual-input arrangement is useful for electrical panel builders and OEM machinery manufacturers producing equipment for different supply configurations. On a 415 V AC supply, the transformer steps the voltage down to 24 V AC. On a 240 V AC supply, it also provides a nominal 24 V AC output when the correct primary terminals are used. The two primary voltage options are alternative connections and must not be treated as independent supplies that can be connected simultaneously.
The 400 VA rating corresponds to a calculated nominal full-load secondary current of approximately 16.67 A at 24 V AC. This value is obtained by dividing the transformer's rated apparent power by its nominal secondary voltage. Engineers should consider the combined apparent power of connected equipment, load characteristics, permissible voltage variation and any short-duration inrush requirements when determining whether the DV400P6S6 is suitable for a particular application.
The specified 8% voltage regulation is an important consideration for 24 V AC control circuits with defined operating voltage tolerances. Voltage regulation relates to the change in secondary voltage between no-load and rated-load conditions under the relevant test conditions. The actual secondary voltage may therefore vary with primary supply voltage and connected load rather than remaining exactly 24 V AC at all times.
The DV400P6S6 incorporates Class E insulation, IP20 touch-proof terminals, Class H varnish impregnation and a core earth connection. For installations requiring additional protection, the specified enclosure references are EPH 3 or EPN 2. Appropriate primary and secondary overcurrent protection, conductor sizing, protective earthing, ventilation and mounting arrangements must be considered during installation.
Typical Applications
- Industrial electrical control panels requiring a 24 V AC control supply.
- Machinery designed for either 240 V AC or 415 V AC primary supplies.
- OEM machinery manufacturing and electrical panel-building projects.
- Factory automation and industrial process control equipment.
- AC contactor and relay control circuits designed for 24 V AC.
- Industrial switching and electrical control assemblies.
- Packaging, processing and manufacturing machinery.
- Electrical distribution and control cabinet installations.
- Auxiliary circuits designed for 24 V AC operation.
- Industrial equipment incorporating multiple compatible 24 V AC loads.
- Control panels requiring flexibility between supported primary supply voltages.
- Maintenance and replacement applications requiring a compatible 400 VA dual-input control transformer.
- Electrical installations requiring 240 V to 24 V AC or 415 V to 24 V AC voltage conversion.
When selecting the ETE DV400P6S6 400 VA transformer, confirm that the available primary supply is either 240 V AC or 415 V AC and that the connected equipment requires a nominal 24 V AC supply. The combined apparent power of the connected loads must remain within the transformer's 400 VA rating, with suitable allowance for equipment starting characteristics and transient demands.
At 24 V AC, the transformer has a calculated full-load secondary current of approximately 16.67 A. Secondary wiring, terminals and protective devices must therefore be selected for the intended circuit conditions. The 8% voltage regulation should also be considered when assessing whether connected relays, contactors and other control devices will operate reliably throughout their expected voltage range.
The transformer's Class E insulation, 120 × 108 × 120 mm dimensions and 5.5 kg weight should be considered during mechanical and thermal design. The specified EPH 3 or EPN 2 enclosure references provide a starting point for enclosure selection, while final installation arrangements should follow the manufacturer's documentation and applicable electrical regulations.
