CT7742 Auto-Zero AC/DC Current Sensor

Product enquiry for CT7742 Auto-Zero AC/DC Current Sensor

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Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology.

The CT7742 is a 2000 A AC/DC Current Sensor that pairs with the detachable Display Unit CM7290 for convenient field testing, while delivering an extended temperature range and auto-zero adjustment to minimize drift due to wide temperature changes that occur during long-term testing.

Further extend the functionality of this system by connecting the Display Unit with a Hioki memory recorder or logger.

CAT IV 600 V

Note: CT7700 series cannot be used alone. Use with the Display Unit CM7290, CM7291 to connect with Data Loggers and Memory HiCorders. When used in combination with CM7290 or CM7291, the frequency band of current display and waveform output becomes narrow.

Basic specifications (Accuracy guaranteed for 3 years, Post-adjustment accuracy guaranteed for 3 years)

Rated measurement current 2000 A AC/DC
Max. measurement current 2000 A
(requires derating at frequency)
Max. allowable peak input 2840 A peak
Bandwidth DC to 5 kHz (-3dB)
(When used in combination with CM7290 or CM7291: DC 3 Hz to 1 kHz)
Typical accuracy ±2.3 deg. (DC < f ≤ 66 Hz)
Output rate 0.1 mV/A
Max. rated voltage to earth AC/DC 600 V (CAT IV)
AC/DC 1000 V (CAT III)
Core diameter φ 55 mm (2.17 in) or less
Output connectors HIOKI PL 14
Operating temperature range -25 °C to 65 °C (-13 °F to 149 °F)
Dimensions and mass 64 mm (2.52 in)W × 195 mm (7.68 in)H × 34 mm (1.34 in)D, 510 g (18.0 oz), Cable length 2.5 m (8.20 ft)
Accessories None

Key Features

  • Accurately measure and record even when the temperature changes
  • Ideal for site inspections by using detachable Display Unit
  • Four output formats to output data to loggers or other devices (via Display Unit) WAVE, RMS, PEAK, Hz

Application Notes