Calibration Equipment

Off-the-Shelf and Custom Designs Meeting IEEE and IEC Standards

DRR112 V20 FrontDRR-112
AC/DC Resistance Standard / Earth Resistance Meter Calibrator DRR-112

  • Optimized for Calibration of AC Earth Resistance Meters
  • Calibrates 11 fixed resistances plus open and short
  • Resistor Accuracy of 0.1% or better
  • Test Frequency from DC up to 10 kHz
  • Test Power of up to 10 Watts
  • Shielded and Guarded Measurements
  • 2-wire, 3-wire, and 4-wire Measurement Connections
  • Rugged design mounted in a Pelican box

DRR-112 Specification Sheet


DRTC-100 side freeDRTC-1000
Ratio Meter Calibrator DRTC-100
High-Accuracy Integrated System for Full Calibration of All Transformer Test Ratio Meters

  • Input/output voltage ratios from 0.8 to 50,000 with reference transformer
  • Simulates all single-phase and three-phase vector groups
  • Output Phase Shifts from -360° to +360°
  • Measures Test Voltage and Load Current
  • Manual, Semi-Automatic, and Remote-Controlled operation

DRTC-100 Specification Sheet


DRTS-12 frontDRTS-12
Circuit Breaker Simulator DRTS-12
Accurately Calibrates the Timing of Circuit Breaker Test Systems

  • Up to 96 Independent Channels with 8 impedances and 10 μs resolution
  • Accurate simulation of contact bounce
  • Calibrates Doble TDR9000 and similar Circuit Breaker Testers

DRTS-12 Specification Sheet


1 kV Impulse Calibrator DRIC-1000
Calibrates Impulse Recorders and Impulse Dividers

  • Adjustable Test Voltage of up to 1000 V
  • Output of Step, Pulse, and 0.84/60 μs Impulse

Detailed Specifications upon Request


DRAN-110 precision attenuator transparentDRAN-110
Precision Attenuator DRAN-11 and DRAN-110

  • Precision switched Pi-Attenuator for 0-11 dB or 0-110 dB with 0.05 dB accuracy at 0-1 MHz
  • Constant 50 Ω Input and Output Impedances

Detailed Specifications upon Request