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The phase comparator Compare 2.0 is a single-pole, capacitive phase comparator for voltages from 5 – 36 KV.

Phase comparator, single-pole

Product Features

  • Designed according to IEC 61481 (VDE 0682-431)
  • Single-pole, capacitive phase comparator
  • Detection of correct phase relationship and incorrect phase relationship between two live conductors
  • For indoor and outdoor applications  
  • Visual indication  
  • Built-in self-test function

The phase comparator Compare 2.0 is a single-pole, capacitive phase comparator for voltages from 5 – 36 KV. The device detects "correct phase relationship" or "incorrect phase relationship" conditions between two live conductors of a medium voltage distribution network.
Confirming to IEC 61481 Class B, "incorrect phase relationship" appears at a phase angle between 60° and 300°.
Four bright LEDs indicate various operational conditions.
The turning knob is used to either tun the device on/off and select between three voltage ranges:
0:    OFF
1:      5 – 10 kV
2:    10 – 20 kV
3:    20 – 36 kV
The phase comparison is realised by contacting the conductors one after the other.
In medium voltage networks with decentralised renewable energy feed-ins, measurement interruptions may occur. In such cases repeat the phase comparison. It is impossible to get a wrong indication.
According to the German accident prevention standard DGUV Regulation 3
(Table 1c), the device is subject to maintenance tests with minimum intervals of at least 6 years.

Technical Data

Technical Data

Compare 2.0


In dry and wet conditions, either indoors or outdoors


Visual: 1 white LED / 1 blue LED / 1 green LED / 1 red LED

Nominal frequency

50 Hz

Maximum operating period with the pole connected to voltage 60 s

Operating temperature

-25 to +70 °C, climatic class N and W

Operational class

B (indication of phase unbalance in the range of 60° – 300°)



Universal-Plastic Case

for FL-I, TP-I, Comet, PG II, COMPARE 2.0



Note Item Number


Total length: 1,420 mm
Insertion depth: 635 mm

Item Number51-0104-001

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