11kV Phase Comparator – Medium Voltage IEC61481 Phase Comparator

11kV Phase Comparator – Medium Voltage IEC61481 Phase Comparator

11kV Phase Comparator – Medium Voltage IEC61481 Phase Comparator

Pfisterer Deltameter 5 is a 11kV phase comparator suitable for indicating the voltage difference between two phases.

When inter-connecting different medium voltage systems, protective devices may be actuated as a result of incorrect phase and voltage levels. This can occur even though phase relationship tests with IEC 61481 phase comparators have indicated ‘phase coincidence’. In these instances the Deltameter 5 can be used to supplement the phase relationship tests with phase comparators.

The 11kV phase comparator indicates the quantitative voltage difference between two phases on a four-digit segment display with a resolution of 10 V. The Deltameter 5 thus provides a highly precise decision-making tool for imminent switching operations.

11kV Phase Comparator – Technical Specification

  • Double pole type with two insulating poles and two convenient handles
  • For use on 3-phase systems with a nominal frequency of 50 Hz and nominal voltage between 1 and 13 kV
  • Can be used in rain or snow
  • 7-segment 4-digit LED display, digit height 14 mm
  • 10 V resolution
  • ±5 % accuracy on a measured value of +30 V
  • Connecting cable length 1000 mm
  • Artificial leather case included
Pfisterer Part Number 930 450 001
Nominal voltage Un (kV) 1 – 13
Nominal frequency fN (Hz) 50
Voltage type AC
Application Switchgear / Overhead Line
Type of device complete
Language de
Total length LG (mm) 1190
Penetration depth Ai (mm) 520

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