CATU CL-7-4-18 | HV Single Pole Phase Comparator 33kV / 36kV

Published 14 Jul 2021

CATU CL-7-4-18 Single Phase Comparator

HV Single Phase Comparators

CATU CL-7-4-18

CATU has recently introduced a new single pole phase comparator, operating up to 36kV, to the Electrical Safety market. The CATU CL-7-4-18 is used to identify voltage differences between two points on 4kV and 18kV networks. Certified to IEC 61481-1 standards.

The new range of Phase Comparators are easy to use with user friendly features:

  • Single-pole device with C, K, W end-fitting
  • Storage of frequency and phase of distribution network voltages
  • Push-button test of the device, which also resets the memory
  • Class C: (maximum time for storing information in memory: 15 seconds when not connected to the line) . Non accordance (+110° to +250°)
  • LED indicators:
    • Orange (M) indicating the storage of a phase and the mains frequency;
    • Green (C) indicating that the mains phase is identical to the one previously stored (match); + discontinuous beep buzzer.
    • Red (I) indicating that the phase of the network is of a different phase from that previously stored (mismatch) + continuous beep buzzer.
  • Voltage difference between the two networks to be compared: +/- 15%.
  • Angle difference between the two phases (networks) to be compared: +/- 10°
  • The red ring indicates the physical limit to which the phase comparator can be inserted between live parts (57 cm from the red ring to the end fitting).
  • Option: Antenna Magnefix with a U Max utilisation : 18 kV, Order Ref C-921545

IEC 61481-1:2014 

Live Working – Phase Comparators – Part 1: Capacitive type to be used for voltages exceeding 1kV a.c. Download IEC Standard.

CATU CL-7-4-18 HV Single Pole Phase Comparator

CATU CL-7-4-18 HV Single Pole Phase Comparator with ‘K’ end fitting

CATU CL-7-4-18 Specification

CATU CL-7-4-18 is an HV single pole phase testing range with a buzzer and LED indicators.

These phase comparators are suitable to be used indoors and outdoors, where temperatures are between -25, and + 55°C (Climatic category – N). CL-7-4-18 is powered by a 6LR61 battery (9V).

CATU Order Reference Compatible Fittings Voltage Rating Frequency Weight Length Protection Class
CL-7-4-18 C, K, W 4 kV – 18 kV 50 / 60 Hz 1.05 kg 790 mm Class C
High Voltage Electrical Safety

High Voltage Electrical Safety

Further Reading
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Further Reading