Designed for the utility market, this micro-ohmmeter accurately measures very low contact resistances of high voltage circuit breakers, switches, busbars, etc., with test currents up to 200A. With optimized filters and protection for measurements in electrical substations.
Designed for the utility market, this micro-ohmmeter accurately measures very low contact resistances of high voltage circuit breakers, switches, busbars, etc., with test currents up to 200A. With optimized filters and protection for measurements in electrical substations.
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The AEMC® high-current Micro-Ohmmeter Model 6290 is a portable, microprocessor-controlled instrument. It has optimized filters and protection for measurements in electrical substations. The Model 6290 can be used to accurately measure very low contact resistances of high voltage circuit breakers, switches, busbars, etc., with test currents up to 200A. It employs the four-terminal Kelvin method to prevent errors caused by test leads and their contact resistances.
Measurement accuracy is guaranteed through a state-of-the-art signal amplification system, offset-free with high long-term stability. Resistance readings are shown in the alphanumeric display with up to 4½-digit resolution. It allows measurement resistances up to 20mΩ, and resolution of 0.1µΩ.
Applications
| ELECTRICAL | |
| Test Current Range | 100A, 200A (True DC); Adjustable from 0 to 100% |
| Resistance Range | 0 to 1999µO (test current: up to 200A) 0 to 19.99mO (test current: up to 100A) |
| Accuracy | ± 0.5% of Reading ± 2cts |
| Resolution | 0.1µΩ for R < 200µΩ 1µΩ for R < 2000µΩ 10µΩ for R < 20mΩ |
| Output Voltage | 3.5VDC @ 200A 4.5VDC @ 100A 5.8VDC (no load) |
| Max. Load Resistance | 10mΩ @ 200A 30mΩ @ 100A |
| Measurement Principal | Four-terminal, Kelvin-type |
| Operation Time | Up to 1 minute of continuous use at 200A before thermal protection activates; Up to 15 minutes use at 100A before thermal protection activates |
| Thermal Protection | Protects all sensitive components, avoiding any damage due to overheating |
| Memory | Stores up to 200 measurements |
| Interface | USB |
| Display | Analog bargraph indicator with backlit digital display |
| Communication Software | DataView |
| Power Supply | 100 to 130VAC, 60Hz |
| MECHANICAL | |
| Dimensions | 19.76 x 15.51 x 7.48" (502 x 394 x 190mm) |
| Weight | Approx. 24.25 lbs (11 kg) |
| ENVIRONMENTAL | |
| Operating Temperature | 23° to 122°F (-5° to 50°C) |
| Storage Temperature | -13° to 149°F (-25° to 65°C) |
| Humidity | 95% RH (non-condensing) |
| SAfETY | |
| Safety Rating | IEC61010-1 |
| Environmental Protection | IP54 with closed lid |
| CE Mark | Pending |
| ELECTRICAL | |
| Test Current Range | 100A, 200A (True DC); Adjustable from 0 to 100% |
| Resistance Range | 0 to 1999µO (test current: up to 200A) 0 to 19.99mO (test current: up to 100A) |
| Accuracy | ± 0.5% of Reading ± 2cts |
| Resolution | 0.1µΩ for R < 200µΩ 1µΩ for R < 2000µΩ 10µΩ for R < 20mΩ |
| Output Voltage | 3.5VDC @ 200A 4.5VDC @ 100A 5.8VDC (no load) |
| Max. Load Resistance | 10mΩ @ 200A 30mΩ @ 100A |
| Measurement Principal | Four-terminal, Kelvin-type |
| Operation Time | Up to 1 minute of continuous use at 200A before thermal protection activates; Up to 15 minutes use at 100A before thermal protection activates |
| Thermal Protection | Protects all sensitive components, avoiding any damage due to overheating |
| Memory | Stores up to 200 measurements |
| Interface | USB |
| Display | Analog bargraph indicator with backlit digital display |
| Communication Software | DataView |
| Power Supply | 100 to 130VAC, 60Hz |
| MECHANICAL | |
| Dimensions | 19.76 x 15.51 x 7.48" (502 x 394 x 190mm) |
| Weight | Approx. 24.25 lbs (11 kg) |
| ENVIRONMENTAL | |
| Operating Temperature | 23° to 122°F (-5° to 50°C) |
| Storage Temperature | -13° to 149°F (-25° to 65°C) |
| Humidity | 95% RH (non-condensing) |
| SAfETY | |
| Safety Rating | IEC61010-1 |
| Environmental Protection | IP54 with closed lid |
| CE Mark | Pending |
