High Precision Reference Standards

The Design

Engineers from Radian Research USA, drew on the expertise and knowledge, acquired for industry legacy RM (Metronic) and RD (Dytronic) reference standards to develop the RX (Xytronic), the ultimate in power and energy measurement technology perfection

Features & Advantage

The Rx Series offers following features

  • Extended Measuring Range (30 V-525 V , 5 mA to 200 A AC) provides the versatility to operate in a multitude of power and energy application
  • Very low input impedance (0.5 milli ohm) over the entire AC current range makes it the most suitable and accurate for testing of Isolating Current Transformer
  • Various measurement mode selectable (such as Fundamental Watts, VA, VAr, VAr90°, Total VAr, etc)
  • High precision in extreme environments
  • 1M sample/sec processing in each channel
  • Compliance with IEC 61010-CAT IV 600 V, CE and UL safety standards
  • Expanded 17025 accreditation, service and support
  • 4 nos of Bi-directional, fully configurable pulse I/O ports
  • 1 dedicated input port for scanning head
  • 3 nos of high precision clamp on CT Ports
  • 1 output for Ref CLK Signal (10/20 MHz) useful for synchronisation of high precision measurement
  • Multiple communication port (USB2.0/Ethernet/RS232)
  • Memory Internal (2GB) and External Memory storage (SD Card 32 GB)
  • Input potential protected through fuse/1 Mohm input impedance
  • Front panel video port
  • Light Weight

Available in Single Phase Version also

Metrological Specification

RX-30 & 31

FunctionValue% Accuracy (Tcal 1±5°C) 2Stability (ppm√month)17025 Cal Uncertainty (ppm)

Temp Coefficient (ppm/°C)5

RX30RX31RX30RX31  
Voltage30 V to 600 V6≤ ±0.02%≤ ±0.01%84301.5
Current20 mA to 200 A≤± 0.028%≤ ±0.014%126503
5 mA to <20 mA≤ ±0.08%≤  ±0.04%    
Power/ energy 3,4 @ PF=1≤ 0.02%≤ 0.01%168305
@PF =0.5≤ 0.04%≤ 0.02%168505
Phase angle0° to 360°0.008°0.005°    
Frequency45 Hz to 65 Hz0.0001% 0.30.3 0.05

 

RX-33

FunctionValue% Accuracy (Tcal 1±5°C) 2Stability (ppm√month)17025 Cal Uncertainty (ppm)

Temp Coefficient (ppm/°C)5

RX33RX33  
Voltage30 V to 600 V6≤ ±0.005%2301.5
Current20 mA to 200 A≤± 0.007%3503
5 mA to <20 mA≤ ±0.04%   
Power/ energy 3,4 @ PF=1≤ 0.005%4305
@PF =0.5≤ 0.01%4505
Phase angle0° to 360°0.003°   
Frequency45 Hz to 65 Hz0.0001%0.3 0.05
  1. Tcal =23°C
  2. Total Expanded Uncertainty in Accordance with ISO/IEC Guide 98-3:2008, includes variables of stability, crosstalk and traceability Uncertainty. Accuracy represents expanded uncertainties expressed at the 95% level of confidence using a coverage factor of k=2
  3. Accuracy at PF <0.5 , ± (0.1%/PF Maximum)
  4. for ≥1 second integration time
  5. Maximum  -20°C to #75°C (RX-30 & RX31) (0°C to +40°C for RX33)
  6. 30 V to 525 V at 50 Hz