AC/DC Auto-zero Current Sensor

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 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

Model No. (Order Code)

CT7742	2000 A AC/DC, φ55 mm (2.17 in)

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.

Connect to Recorders, Data loggers, and Oscilloscopes

The CT7000 series cannot be used alone. Use with the Display Unit CM7290, CM7291 to connect with Data Loggers and Memory HiCorders.

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

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Seminar Videos On Demand

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Seminar Schedule

	Testing Expo China 2019 - Shanghai	Sep 24, 2019 - Sep 26, 2019
	2019 International Conference on Power Electronics and ECCE Asia (ICPE 2019 ECCE Asia) - Busan	May 28, 2019 - May 30, 2019

Catalogs

Catalog: AC/DC CURRENT SENSOR CT7000 Series, DISPLAY UNIT CM7290, CM7291

Download PDF [4MB]

English

User Guides

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Manuals

If you can not download, log into your myHioki account to access more technical documents and information where available.

Output current sensor [4MB]	Operating Precautions	Japanese English Simplified Chinese Korean Traditional Chinese Spanish German French Italian	Ver.01
AC/DC AUTO-ZERO CURRENT SENSOR CT7731,CT7736,CT7742 [1MB]	Instruction Manual	English	Ver.01
AC/DC AUTO-ZERO CURRENT SENSOR CT7731,CT7736,CT7742 [798KB]	Instruction Manual	Simplified Chinese	Ver.00