Why Choose the ETE WV400P8S8 400 VA Wide-Input-Voltage Control Transformer?
The ETE WV400P8S8 is a versatile 400 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 high-voltage primary taps with configurable dual secondary windings, providing flexible AC voltage conversion for industrial installations.
The WV400P8S8 features a 0/500/550/600/690 V primary terminal arrangement, supporting compatible 500, 550, 600 and 690 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 configuration provides flexibility for industrial control equipment requiring different operating voltages.
With a rated apparent power of 400 VA, Class E insulation and 8% voltage regulation, the WV400P8S8 is suitable for appropriately rated industrial control circuits. Its dimensions of 120 × 108 × 120 mm and weight of 5.5 kg make it practical for installation in electrical control cabinets with suitable mounting arrangements. The specified enclosure references are EPH 3 or EPN 2.
Key Advantages
- 400 VA rated capacity for industrial control, signalling and automation applications.
- Wide primary voltage selection covering 500, 550, 600 and 690 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 × 108 × 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.
- 400 VA rated apparent power.
- Single-phase transformer configuration.
- Primary terminals: 0/500/550/600/690 V.
- Selectable primary voltages: 500, 550, 600 and 690 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 × 108 × 120 mm.
- Weight: 5.5 kg.
- Enclosure references: EPH 3 or EPN 2.
The ETE WV400P8S8 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 500, 550, 600 and 690 V AC, allowing the transformer to be configured for several compatible industrial electrical supplies.
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 400 VA rating, the theoretical full-load secondary current is approximately 3.64 A at 110 V AC, 3.33 A at 120 V AC, 1.82 A at 220 V AC or 1.67 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 that secondary voltage variation between different 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 installation clearances are particularly important when working with primary supplies up to 690 V AC.
Typical Applications
- Industrial electrical control panels and switchgear assemblies.
- Control circuits supplied from 500, 550, 600 or 690 V AC 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.
