Valhalla Scientific 2555A

World’s Leading Precision 100-Amp AC/DC Current Standard.

For 30 years Valhalla Scientific’s design has proven rock-solid reliability in metrology labs worldwide.

Calibration powerhouse with wide-ranging applications

Capable of delivering from 1mA to 100 amps DC or RMS AC of precise constant current, the 2555A is ideal for direct calibration of ammeters, wattmeters, DMM’s, shunts, current transformers and Hall effect devices. The superb stability of Valhalla’s patented transconductance amplifier technology allows the 2555A to be used for transfer measurements on .001 ohm primary resistance standards. Applications for the 2555A outside of the field of metrology include component testing on fuses, circuit breakers, relays and high current connectors.

Constant current

The 2555A supplies four volts of compliance in order to drive heavy burden loads and still delivers constant current. The output compliance is continually monitored by the unit’s internal voltmeter. Compliance status is displayed at all times on the 2555A’s compliance indicators.

• Up to 20 Amps/phase direct (self contained shunt 0.1%)
• Precision AC/DC Transconductance Amplifier
  
• Programmable AC~DC 100Amp Current Calibrator/Current Source
• Calibration Traceable to NIST
• Maximum Output Current: 100A DC or RMS AC
• Highly Accurate
• Ultra-low Noise