DCCT Calibration Systems – Model 6300

High Precision DCC Shunt & DCCT Measurement Systems

  • Ability to Measure All Types of DCCT
  • Two System Option Available DCC Bridge and 2 DVM Measurement Method
  • Modular Designed Base Unit with Expanded Capabilities to 3000 Amps
  • Ratio Ranges: 1 to 1,000,000:1
  • Complete Turn Key Systems
  • Resistance and Temperature Curves
  • Linearity <0.01ppm
  • Complete Measurement Systems Available
  • Your Partner in ISO 17025 Accreditation Through Coaching, System Design, Implementation, Calibration Services and Ongoing Expert Support
  • Proven Technology

Since 1992, the Measurements International’s (MI) 6010 series has set the standard for research, calibration and measurement of resistors and shunts in both NMIs and calibration laboratories around the world. Now the time has come to advance this best-in-class, the MI 6010 series of DC Resistance and Temperature Bridges, taking advantage of AccuBridge® technology and usability. In particulare the MI 6010D High Performance Resistance Bridge is the culmination of years of engineering development, customer research and industrial design, to bring to market the new standard in resistance, shunt and DCCT research, measurement and calibration.Measurements International’s (MI) series of DCCT Measurement Systems offers the best accuracy and lowest uncertainty of any commercial system available on the market  today. The MI High Current Range Extenders expand the measuring capabilities of the MI model 6010 and MI model 6242 to measure lower resistance values at higher currents with accredited uncertainties <20ppm @ 10uΩ to 0.1ppm @ 1Ω and 0.1ppm @ 10kΩ being achievable.

High Performance with Increased Applications

The 6010 can be used to calibrate a wide range of resistance standards (0.1Ω to 100kΩ) and with the addition of the MI series of range extenders and power supplies the calibration of high current shunts (1uΩ to 100mΩ).

In industrial current measurements, the best measurement uncertainties in DC current measurements are reached using DC current transformers (DCCTs). DCCTs have the advantage that their is no warm up period but are more capacitive and inductive than current shunts and so the reversal rate is fairly long to achieve the best accuracy. Several commercial DCCT devices are available on the market now with accuracies approaching 10-5. For the application of research and calibration of the DCCT, MIL is pleased to announce the Model 6300 series of DCCT calibration systems where measurement uncertainties of less than a few ppm for DC currents from 1A to 3kA can be achieved.

The new MIL setup is based on proprietary high-current DC Range Extenders from MI with ratios up to 1:1,000,000. Two measurement techniques can be used to measure the transimpedance of a DCCT. The MI Model 6010D (Resistance Bridge) or the MI Model 6300A which uses two 8½ digit DMMs (3458A) as measuring devices. The 6010D, is developed around the well-established AccuBridge® technology, the transimpedance is obtained by accurately measuring the current ratio using the bridge. This 6010D system provides the best accuracy for the voltage output DCCTs. The 6300A is based on two 8½ digit DMMs (3458A). With this system the absolute value of the test current is required, which is limited by the DMM accuracy. The Model 6300A will measure both voltage and current output DCCTs.

Measurement Range Current Ratio Accuracy
150mA to 1A 10 0.3ppm1
1A to 10A 100 0.3ppm1
10A to 100A 1000 0.3ppm1
100A to 300A 1000 <1ppm1
300A to 1000A 10,000 <2ppm1
1000A to 3000A 100,000 <2ppm1
1000A to 3000A 1,000,000 <2ppm1
Linearity 0.02ppm
Temperature Coefficient 0.02ppm
Communication IEEE-488
Test Current Accuracy 150mA to 150A 0.01%
150mA to 300A 0.01%
300A to 3000A 0.01% + 1 bit
Measurement Range Current Ratio Accuracy
150mA to 1A 10 <7ppm
1A to 10A 100 <7ppm
10A to 100A 1000 <7ppm
100A to 300A 1000 <7ppm
300A to 1000A 10,000 <7ppm
1000A to 3000A 100,000 <7ppm
1000A to 3000A 1,000,000 <7ppm
Linearity 0.03ppm
Temperature Coefficient 1.2 (0.15) + 0.1ppm3
Communication IEEE-488
Test Current Accuracy 150mA to 100A 4.6 (3.1) + 0.3ppm2
100A to 1000A 4.6 (3.1) + 0.3ppm2
1000A to 3000A 4.6 (3.1) + 0.3ppm2

1. 2 sigma ratio accuracy of the 6010D is 0.04ppm.
2. Current accuracy is <0.01% = 0.01ppm in ratio.
3. 3458A accuracy without Acal and with Acal. (Accuracy depends on how well the 3458A can be calibrated.)

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