Ribbon resistor may be used for any application with a direct current exceeding 100A
Design
Ribbon resistor consists of resistance bands made of FeCr or NiCr steel, interconnected in packages. The plate packages are mounted on a frame to form ready resistors.
Operating conditions
- continuous, cycle or pulse operation Indoors or outdoors
- operation in atmospheres being free from gases, explosive mixtures and corrosive vapours
- relative humidity: up to 95% at +22 C (293 K)
- mounting height: maximum 1000m above sea level
Compliance with standards
- PN-EN 60947-1: Low-voltage switchgear and control gear, Part 1: General rules
- PN-EN 60071-1: Insulation co-ordination, Part 1: Definitions, principles and rules
- PN-EN 60529: Degrees of protection provided by enclosures (IP Code)
Parameters / operating conditions of ribbon resistor RB
| Continuous power range: | from 2kW up to any power depending on the application requirements. |
| Continuous current range: | from 100A up to any current value by parallel connection |
| Resistance range: | Depending on power and operating current |
| Resistance tolerance: | ±10%, lower on request |
| Operating voltage: | Up to 1000V They can also be used for medium-voltage applications |
| Insulation withstand voltage: | 3500VAC / 1min. (standard design) |
| Temp. of resistance steel for continuous operation: | 400°C ±50°C |
| Min. / max. ambient temperature: | -40°C / 50°C |
| Installation conditions: | Indoors or outdoors (for built-in resistors) |
| Protection class: | IP00 – IP23 |
