Description
The TECNA 40266 is a medium-frequency inverter (MFDC) resistance welding transformer rated at 240 kVA (50% duty cycle), 379 kVA at 20% duty. It uses a fully water-cooled core with epoxy casting-resin coated windings, and is supplied with a standard 500 V / 1000 Hz primary — other primary voltages and frequencies, including US 480 V / 60 Hz, are available on request. Manufactured to ISO 5826.
Features
- Nominal power 240 kVA at 50% duty cycle (379 kVA at 20% duty).
- No-load secondary voltage 10.9 V.
- Secondary thermal current 14.9 kA at 100% duty.
- Liquid (water) cooled with epoxy casting-resin coated windings for high performance and long service life.
- Medium-frequency (DC output) design — compact, with efficient heat delivery; pairs with the TECNA 1510C/1530A MF inverter system.
- Other primary voltages and frequencies (including US 480 V / 60 Hz) available on request.
- Manufactured in conformity with ISO 5826.
Installation & Physical
- Water cooling: 3.96 gpm (15 l/min).
- Net weight: 187 lbs (85 kg).
Part of the TECNA inverter (mfdc) transformer range; related models in the same family include 40314, 37610, 40139, 40138, 43737, 40365 and others.

