source: ECN article
Tue, 11/24/2015 – 11:24am by Vishay Intertechnology
Vishay Intertechnology, Inc. introduced a new series of high-power, high-current grid resistors. Offering designers a convenient drop-in replacement for competing solutions, Vishay Milwaukee GRE2 devices, a product line of Vishay Dale Resistors, combine high power ratings to 24 kW and high operating temperatures to +400 °C with a robust design.
With high power capability from 4 kW to 24 kW at +40 °C, the grid resistors released today are optimized for capacitor pre-charge and discharge, dynamic braking, load testing, heater, and neutral grounding applications in locomotives/transit systems, harmonic filters, renewable energy systems, and industrial systems. The devices feature a wide resistance range from 0.25 Ω to 50 Ω, with tolerance of ± 10 %, and low inductance from 10 µH to 40 µH.
Featuring a stainless steel plate element, ceramic insulators, and multiple taps, the GRE2 series provides high reliability with a welded construction and double insulation for maximum cooling efficiency. Offered in modular or custom designs, the RoHS-compliant industrial power resistors can be mounted in IP20 (indoor rated) and IP23 (outdoor rated) enclosures to offer the optimized level of protection for the application.