7010C High Voltage, Capacitance, Inductance, Tan Delta Bridge

  • Automatic Self Balancing
  • Current Comparator Technology
  • 2-3 Terminal Measurements
  • Lead Compensation Circuit
  • Overall Accuracy 15 ppm
  • Range Extension Option with 7020
Features & Benefits

The Model 7010C offers a wider capacitance range and increased voltage sensitivity. Minimum voltage sensitivity for full scale accuracy is 100 volts. The 7010C is a microprocessor controlled, metrology based, high voltage capacitance bridge. Its operation is fully automatic. A large vacuum florescent display presents relevant measuring quantities such as capacitance (Cx) and dissipation factor (Tanδ). Easy to use front panel keyboard menus allow the operator to select the number of readings for statistical analysis of uncertainty calculations at the 95% (2s) level. All measured parameters can be transmitted over the IEEE488 interface for storage to a computer.

The model 7010C is a capacitance bridge with a ratio of 1000:1 making it ideal for both low and high voltage applications. The automatic self-balancing feature facilitates the use of the bridge for accurate load loss measurements of High Voltage Capacitance Bridge MODEL 7010C large high voltage inductive loads.

The 7010C may also be used for calibration of precision standard capacitors, tan-delta measurements and of precision potential transformers. Overall accuracy is <15 ppm in magnitude and phase. The technology is based on the two-stage-current-comparator-principle.

The 7010C has a capacitance ratio up to 1000:1 and dissipation (loss tangent) of 0 to 10% with a resolution of 1 ppm. To accommodate capacitance ratios larger than 1000:1 an additional two stage range extender, model 7020, may be added to increase the ratio to 2,000,000:1. All connections are made on the rear of the instrument. The model 7010C is fully protected against transients.

The effect of lead and winding impedance on the measurement accuracy has been reduced by means of a built-in lead compensation circuit.

Specifications
Capacitance Range Cs: 10 pF to 10,000 pF
Cx: 10 pF to 10,000,000 pF (10 µF)
Capacitive Ratio 1:1 to 1000:1 Ns: 0 to 1.11110 in steps of 0.000001
Nx: 1 to 1000 in steps of 1, 2, 5
Primary Current 10 Amp Maximum
Secondary (Cs) Current Range 40 µA to 10 mA
Dissipation Factor Range 0 to 10% in steps of 0.000001
Inductance Range 700 µH to 700000 H (Q factor > 10)
Test Frequencies 50 and 60 Hz
Accuracy Ratio: ±15 ppm for all Cx Ratios
Loss Angle ±1% of Reading ±10 ppm
Display 7 inch Screen Display
Warm Up Time < 5 Minutes to Full Rated Accuracy
Operating Environment 18 to 34°C, 10 to 80% RH
Operating Power 100, 120, 220, 240 V – 50/60 Hz

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