Steel grid resistor may be used for any application with a continuous power exceeding 2kW and continuous current exceeding 10A.
Design
Steel grid resistor (RP) consists of resistance plates made of FeCr or NiCr steel, interconnected in packages. The plate packages are mounted on a frame to form ready resistors.
Dimensions of steel grid resistor (RP)
- depending on resistor power (available on request)
Availability
- 3 - 14 business days (depending on steel grid resistor size) / for a batch of 1 5 pieces
Operating conditions
- operating conditionscontinuous, 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 steel grid resistor
| Continuous power range: | from 2kW up to any power depending on the application requirements. |
| Continuous current range: | from 10A up to 100A (above this: 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 |
