370EX

Power Transformers Overview

The Hammond Manufacturing 370EX is an industrial power transformer from the 300 Series, rated at 119 VA. It features a dual primary winding supporting 100 VAC to 240 VAC input and a triple secondary winding configuration. The high voltage output provides 550 VAC center-tapped at 144 mA, with an additional 50 V bias tap derived from the high voltage center tap. Designed for chassis mounting, it utilizes wire leads for termination and operates within a temperature range of 0°C to +105°C at 50/60 Hz.

Power Transformers Feature Summary

• Triple secondary winding architecture providing high voltage and filament outputs
• Dual primary winding compatibility for global voltage inputs
• Integrated bias tap derived from the high voltage center tap
• Chassis mounting style with wire lead terminations

Power Transformers Applications

• Industrial control systems requiring high voltage plate supplies
• Equipment utilizing vacuum tube filament heating circuits
• Audio amplifier power stages requiring specific bias voltages
• Test and measurement instrumentation power supplies

Power Transformers Procurement Notes

Verify the specific secondary winding configuration required for your application, as the 370EX includes a unique bias tap alongside the standard high voltage output. Confirm that the chassis mounting dimensions and wire lead lengths are compatible with your enclosure design. Ensure the input voltage range matches your facility's power supply standards before procurement.

Power Transformers Selection Notes

Select the 370EX when a combined high voltage and filament supply is needed in a single unit. Its triple secondary design simplifies wiring compared to using separate transformers. Consider the physical size constraints, as chassis-mounted transformers require adequate ventilation space. Verify that the 119 VA rating meets the peak load requirements of the connected circuitry without exceeding thermal limits.

Power Transformers Part Context

The 370EX belongs to Hammond’s 300 Series of industrial control transformers, which are engineered for durability in demanding environments. This series typically offers robust construction suitable for continuous operation. The component serves as a specialized power conversion device, integrating multiple voltage outputs to reduce system complexity and assembly time in industrial electronic applications.

Power Transformers Replacement Considerations

Direct substitutes within the same series include the 370CX (59 VA) and 370DAX (76 VA), though these offer lower power ratings. The 370EX provides higher capacity than these variants. No other part numbers in the provided documentation share the identical 119 VA rating and triple secondary configuration.