JUSP-RA04

The Yaskawa JUSP-RA04 is classified as a regenerative resistor unit, developed to enhance efficiency within various systems. It provides a resistance of 50 Ω paired with a power rating of 300 watts. This unit operates within specific tolerances, including ±7% for the J type and ±10% for the K type. Its temperature coefficient is specified at ±260 ppm/°C for resistances exceeding 20 Ω, ensuring stability over a range of environmental conditions.

Designed to handle demanding situations, the JUSP-RA04 has an overload capacity of ±2% at 10 times the rated power for a brief period of 5 seconds, which allows it to manage sudden surges. The insulation resistance is rated at a minimum of 20 MΩ when tested at 500 VDC, providing excellent electrical isolation. Additionally, it can sustain dielectric strength of ±0.1% at 2000 VAC for one minute, reflecting its capability to endure high voltage stress.

The device's operational window is impressive, functioning effectively in environments with temperatures ranging from -25°C to 150°C. Its durability is confirmed by the assertation that there will be no more than ±5% change in resistance after 1000 hours, ensuring consistent performance over time. Furthermore, the unit is designed with fire resistance standards, exhibiting no ignition at 10 times its rated power for a minute, which contributes to safety in critical applications.

For installation, the JUSP-RA04 requires external mounting on an amplifier, accommodating both passive and forced-air cooling methods. This versatility in cooling options allows it to be integrated into various setups while maintaining efficient operation and extending the lifespan of the equipment.