Why Choose the ETE WV50P7S7 Wide-Input-Voltage Control Transformer?
The ETE WV50P7S7 is a compact and versatile 50 VA single-phase wide-input-voltage control transformer designed to provide reliable voltage transformation and electrical isolation for industrial control circuits, machinery and automation systems. As part of the ETE WV wide-input-voltage stock control transformer range, it is particularly suitable for electrical control panel builders, OEM machine manufacturers and maintenance engineers requiring flexible primary voltage selection and dual secondary winding configurations.
The WV50P7S7 features seven primary terminals marked 0/380/400/420/440/460/480 V, providing multiple nominal input voltage connections for 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 flexible arrangement allows the transformer to support different control voltage requirements while reducing the need for separate transformer models.
With a rated apparent power of 50 VA, Class E insulation and 15% voltage regulation, the WV50P7S7 is suitable for smaller industrial control loads, including compatible relays, contactor coils, signalling equipment and auxiliary circuits. Its compact dimensions of 75 × 65 × 88 mm and weight of just 1 kg make it a practical choice for space-conscious electrical installations, with associated EPH 1 or EPN 1 enclosure references.
Key Advantages
- Compact 50 VA single-phase control transformer for industrial control applications.
- Wide-input-voltage design with nominal primary connections from 380 V to 480 V AC.
- Seven primary terminal markings providing flexible voltage selection.
- Dual 24 V AC secondary windings for adaptable output configurations.
- 24 V AC parallel connection for compatible low-voltage control circuits.
- 48 V AC series connection for applications requiring a higher secondary voltage.
- Class E insulation for dependable industrial electrical performance.
- 15% voltage regulation specified for the transformer.
- Compact construction measuring just 75 × 65 × 88 mm.
- Lightweight 1 kg design for convenient integration into electrical control panels.
- Part of the established ETE WV stock control transformer range.
Key Features
- ETE WV wide-input-voltage control transformer series.
- 50 VA rated apparent power.
- Single-phase transformer construction.
- 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 configuration: Two 24 V AC windings.
- Parallel secondary connection: 24 V AC.
- Series secondary connection: 48 V AC.
- Insulation class: Class E.
- Voltage regulation: 15%.
- Electrical isolation between primary and secondary circuits.
- Suitable for compact industrial control and auxiliary power applications.
- Dimensions: 75 × 65 × 88 mm.
- Weight: 1 kg.
- Associated enclosure references: EPH 1 or EPN 1.
Flexible 24 V and 48 V Control Power for Industrial Automation
Industrial control transformers such as the ETE WV50P7S7 convert incoming AC supplies into lower secondary voltages suitable for control equipment, machinery and auxiliary electrical circuits. The transformer provides electrical isolation between the primary and secondary windings, allowing compatible low-voltage control equipment to operate from a dedicated transformer supply.
The WV50P7S7 features a particularly flexible primary terminal arrangement with nominal connections for 380 V, 400 V, 420 V, 440 V, 460 V and 480 V AC. This wide range makes the transformer suitable for industrial installations operating at different supply voltages, provided the appropriate primary terminal is selected and the installation complies with the manufacturer's connection instructions.
On the secondary side, the transformer incorporates two separate 24 V AC windings. These can be connected in parallel for a 24 V AC output or in series for a 48 V AC output. Parallel connections must maintain the correct winding polarity, while series connections must use the correct additive winding arrangement. The transformer's total rated capacity remains 50 VA in either configuration, and the connected load must not exceed the permitted winding or overall transformer ratings.
The WV50P7S7 has a specified 15% voltage regulation, which is an important consideration when selecting the transformer for voltage-sensitive equipment. Secondary voltage may be higher under light-load or no-load conditions than at rated load, so connected devices should be suitable for the expected voltage variation. Its Class E insulation, compact dimensions and associated EPH 1 or EPN 1 enclosure options make it a practical component for industrial control panel applications where space and voltage flexibility are important.
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.
- Machine tool control and auxiliary electrical systems.
- Industrial signalling and indication equipment.
- Conveyor and material handling control systems.
- Packaging and production machinery.
- OEM machinery and factory automation installations.
- Electrical control panel manufacturing and refurbishment.
- Replacement transformers for compatible industrial control applications.
