Why Choose the ETE WV750P7S7 Wide-Input-Voltage Control Transformer?
The ETE WV750P7S7 is a robust 750 VA single-phase wide-input-voltage control transformer designed to provide dependable AC voltage transformation for industrial machinery, electrical control panels and automation systems. Part of the ETE WV stock control transformer range, it combines flexible primary voltage selection with dual secondary windings, making it a practical solution for industrial control panel builders, OEM machinery manufacturers and electrical maintenance engineers.
The WV750P7S7 features primary terminals marked 0/380/400/420/440/460/480 V, providing six nominal input voltage options for different industrial electrical supplies. Its dual 0/24 V secondary windings can be connected in parallel to provide a 24 V AC output or in series to provide a 48 V AC output. This configurable arrangement allows the same transformer to support different control voltage requirements while retaining a total rated capacity of 750 VA.
With Class E insulation and 4% voltage regulation, the ETE WV750P7S7 is suited to industrial applications requiring a substantial control transformer capacity and relatively stable secondary voltage performance. Measuring 150 × 108 × 145 mm and weighing 7.6 kg, it offers a practical combination of power capacity and manageable dimensions, with an associated EPN 3 enclosure reference.
Key Advantages
- 750 VA rated apparent power for industrial control and auxiliary AC circuits.
- Wide-input-voltage design with nominal primary connections from 380 V to 480 V AC.
- Six selectable primary voltage connections for compatibility with different industrial electrical supplies.
- Dual 24 V AC secondary windings for flexible output configurations.
- 24 V AC parallel output for compatible industrial control equipment.
- 48 V AC series output for higher-voltage auxiliary and control circuits.
- 4% voltage regulation to help limit secondary voltage variation under changing load conditions.
- Class E insulation for industrial transformer applications.
- Provides electrical isolation between primary and secondary windings.
- Substantial 750 VA capacity for multiple compatible control loads.
- Practical 150 × 108 × 145 mm dimensions for industrial panel integration.
- Associated EPN 3 enclosure reference.
Key Features
- ETE WV wide-input-voltage control transformer series.
- Single-phase transformer construction.
- 750 VA total rated apparent power.
- Primary terminals: 0/380/400/420/440/460/480 V.
- Nominal primary voltage options: 380 V, 400 V, 420 V, 440 V, 460 V and 480 V AC.
- Secondary terminals: 0/24 V + 0/24 V.
- Secondary winding arrangement: Two 24 V AC windings.
- Parallel secondary connection: 24 V AC.
- Series secondary connection: 48 V AC.
- Insulation class: E.
- Voltage regulation: 4%.
- Electrical isolation between primary and secondary circuits.
- Suitable for industrial control and auxiliary AC power applications.
- Dimensions: 150 × 108 × 145 mm.
- Weight: 7.6 kg.
- Enclosure reference: EPN 3.
Reliable 24 V and 48 V AC Control Power for Industrial Automation
The ETE WV750P7S7 transforms a selected industrial AC input voltage into a lower secondary voltage suitable for compatible control equipment. Its six nominal primary voltage connections support installations using 380 V, 400 V, 420 V, 440 V, 460 V or 480 V AC supplies. This flexibility can simplify transformer selection across machinery and electrical installations with different nominal supply voltages. The appropriate primary terminal must be selected to match the available supply.
On the secondary side, the transformer incorporates two separate 24 V AC windings. Connecting these windings correctly in parallel provides a 24 V AC output, while connecting them in series with additive polarity provides a 48 V AC output. Parallel operation requires matching winding polarity, and all connections must follow ETE's terminal identification and wiring instructions.
The transformer's 750 VA rating applies to its total apparent power capacity, rather than independently to each secondary winding. This capacity can support multiple compatible industrial control devices, provided their combined operating and starting demands remain within the manufacturer's permitted transformer and winding ratings. The specified 4% voltage regulation helps limit the variation in secondary voltage between no-load and rated-load conditions, although connected equipment must still be suitable for the expected voltage range.
With Class E insulation, a 7.6 kg weight and an associated EPN 3 enclosure reference, the WV750P7S7 is suitable for integration into appropriately designed industrial electrical equipment. Installation should account for adequate mechanical support, ventilation, protective devices, earthing and safe access to terminals.
Typical Applications
- 24 V AC industrial control circuits.
- 48 V AC auxiliary control circuits.
- Industrial machinery control panels and electrical cabinets.
- Contactor and relay coil supply circuits.
- Industrial motor starter and switching control systems.
- Machine tools and manufacturing equipment.
- Conveyor and material handling systems.
- Packaging and processing machinery.
- Industrial signalling and indication equipment.
- OEM machinery and factory automation installations.
- Industrial electrical panel manufacturing and refurbishment.
- Compatible transformer replacement and machinery upgrade projects.
