Why Choose the ETE WV500P7S8 500 VA Wide-Input-Voltage Control Transformer?
The ETE WV500P7S8 is a versatile 500 VA single-phase wide-input-voltage control transformer designed for industrial electrical control panels, machinery, switchgear and automation systems. Part of the ETE WV wide-input-voltage control transformer range, it combines multiple primary voltage taps with configurable dual secondary windings, providing flexible AC voltage conversion for industrial installations operating with different supply voltages.
The WV500P7S8 features a 0/380/400/420/440/460/480 V primary terminal arrangement, supporting compatible 380, 400, 420, 440, 460 and 480 V AC supplies. Its two 0/110/120 V secondary windings can be connected in parallel for 110 V or 120 V AC, or in series for 220 V or 240 V AC. This flexibility makes the transformer suitable for industrial control equipment with different operating voltage requirements.
With a rated apparent power of 500 VA, Class E insulation and 8% voltage regulation, the WV500P7S8 provides a practical solution for appropriately rated industrial control circuits. Its dimensions of 120 × 120 × 120 mm and weight of 6.2 kg make it suitable for installation in electrical control cabinets with appropriate mounting arrangements. The specified enclosure references are EPH 3 or EPN 2.
Key Advantages
- 500 VA rated capacity for industrial control, signalling and automation applications.
- Wide primary voltage selection covering 380, 400, 420, 440, 460 and 480 V AC.
- Dual secondary windings provide flexible series and parallel output configurations.
- 110 V or 120 V AC parallel output for compatible industrial control devices.
- 220 V or 240 V AC series output for higher-voltage control circuits.
- 8% voltage regulation provides a defined secondary voltage regulation characteristic.
- Class E insulation provides a specified thermal insulation classification.
- Compact 120 × 120 × 120 mm dimensions help conserve electrical panel space.
- Single-phase construction suitable for industrial machinery and electrical control assemblies.
- EPH 3 or EPN 2 enclosure references assist with selecting suitable protective housing.
Key Features
- ETE WV wide-input-voltage control transformer series.
- 500 VA rated apparent power.
- Single-phase transformer configuration.
- Primary terminals: 0/380/400/420/440/460/480 V.
- Selectable primary voltages: 380, 400, 420, 440, 460 and 480 V AC.
- Secondary terminals: 0/110/120 V + 0/110/120 V.
- Secondary winding arrangement: Dual windings configurable in series or parallel.
- Parallel secondary output: 110 V or 120 V AC.
- Series secondary output: 220 V or 240 V AC.
- Voltage regulation: 8%.
- Insulation class: E.
- Dimensions: 120 × 120 × 120 mm.
- Weight: 6.2 kg.
- Enclosure references: EPH 3 or EPN 2.
The ETE WV500P7S8 is designed for industrial control installations where the available primary supply voltage may differ between machines, facilities or electrical systems. Its selectable primary terminals support 380, 400, 420, 440, 460 and 480 V AC, allowing the transformer to be configured for several compatible industrial supply voltages.
The transformer incorporates two secondary windings, each with 0/110/120 V terminals. Connecting matching secondary winding taps in parallel with the correct polarity provides 110 V or 120 V AC. Connecting the windings in series with the correct additive polarity provides 220 V or 240 V AC. All winding connections must follow ETE's instructions to ensure correct voltage selection and safe operation.
Based on its 500 VA rating, the theoretical full-load secondary current is approximately 4.55 A at 110 V AC, 4.17 A at 120 V AC, 2.27 A at 220 V AC or 2.08 A at 240 V AC. These calculated values assume the full rated apparent power is available in the selected configuration. Actual permissible winding currents and loading requirements must follow ETE's specifications.
The specified 8% voltage regulation means secondary voltage variation between operating load conditions should be considered when selecting connected equipment. Sensitive devices requiring tightly regulated supplies may need additional voltage regulation. Correct primary tap selection, secondary winding polarity, suitable circuit protection, conductor sizing and appropriate installation clearances are essential for safe operation.
Typical Applications
- Industrial electrical control panels and automation cabinets.
- Control circuits supplied from 380–480 V AC industrial electrical systems.
- 110 V and 120 V AC relay and contactor control circuits.
- 220 V and 240 V AC industrial control equipment.
- OEM machinery designed for different industrial supply voltages.
- Industrial process control and automation installations.
- Motor control centres and machinery control cabinets.
- Industrial signalling and monitoring equipment.
- Electrical assemblies requiring selectable isolated AC control voltages.
- Replacement of existing control transformers with matching electrical and mechanical specifications.
