• Automatic Self Balancing Current Comparator Technology

• Capacitance, inductance and reactor loss measurements

• Overall accuracy <15 ppm

• High Voltage Capacitors to 800 kV

• Current Transformers to 4000A

• Large touch screen displays HV and reactor current and reactor losses

• Display updates every 1 second

The Shunt Reactor Loss Measurement System is a microprocessor controlled, metrology based, high voltage Capacitance, Inductance and Reactor Loss Measurement bridge which is based on the two stage- compensated current transformer. The 7010C bridge can be ordered by itself or it can be ordered with high voltage capacitors up to 800 kV line to ground and two-stage-compensated current transformers up to 4000A. the system is fully automatic displaying the rms voltage at the top of the capacitor, the reactor current and the reactor losses.

The Acculoss® Shunt Reactor Loss Measurement System is a complete Loss Measurement System designed for power frequency testing and calibration of medium and large power shunt reactors. The measurement capability of the Model SR 7010/400 is 400 kV (line to ground) and currents up to 4000 A at frequencies of 50/60 Hz. A large 7” (178.5 mm) touch screen display, located on the front panel, is used to enter data and configure the input of the 7010C.

The USB slot on the front panel is used to save measurement setups and measurement data. The easy to use touch screen menus allow the operator to select the number of readings for statistical analysis of the uncertainty calculations at the 95% (2s) level. Measurement parameters for Capacitance and Inductance can be transmitted over the IEEE488 interface for storage to a computer.

The automatic self-balancing feature facilitates the use of the bridge for accurate load loss measurements of large high voltage inductive loads. Touch screen menus allow the operator to select Capacitance, Inductance and Reactor Loss Measurement functions.

The model 7010C is a capacitance/inductance bridge with a maximum ratio of 1000:1 making it ideal for both low and high voltage applications. Overall accuracy is <15 ppm in magnitude and phase. The 7010C has ratios of 1, 2, 5, 10, 20, 50, 100, 200, 500 and 1000:1 and dissipation (loss tangent) measurements from 0 to 10% with a resolution of 1 ppm.

To accommodate larger ratios than 1000:1 an additional two stage range extender, model 7020 (figure 1) may be added to increase the ratio to 2,000,000:1. All connections are made on the rear of the 7010C bridge. The current input is secured using a locking connector and the voltage input is secured by a BNC locking connector. Below is a schematic (figure 2)for measuring losses with the 7020-2000:1 range extender and the high voltage capacitor. Leads up to 50 meters are available for connecting the output of the high voltage capacitor and model 7020 range extender.