AC Flexible Current Sensor CT7040

The Hioki AC Flexible Current Sensor CT7040 Series is designed for accurate measurement of large AC currents in tight, crowded, or complex wiring environments. With flexible Rogowski-style loops, support for currents up to 6000 A, and multiple loop size options, the CT7040 series is ideal for site inspections, power analysis, and long-term current monitoring when paired with a Hioki display unit.

Key Features

Measures large AC currents up to 6000 A
Flexible loop design for confined and complex wiring
Wide frequency range from 10 Hz to 50 kHz
Available in three loop diameters for application flexibility
CAT IV 600 V and CAT III 1000 V safety ratings
Supports waveform, RMS, peak, and frequency output modes
Compatible with Hioki Memory HiCorders, data loggers, and oscilloscopes via display unit

SKU: AC Flexible_Current_Sensor_CT7040 Categories: Current Monitors, Products

Description

Hioki AC Flexible Current Sensor CT7040 for High-Current Applications

The Hioki AC Flexible Current Sensor CT7040 Series delivers a practical and reliable solution for measuring large AC currents in environments where traditional clamp sensors are difficult or impossible to use. Designed for industrial fieldwork and electrical inspections, this series combines Hioki’s advanced current sensing expertise with a compact, flexible design that adapts easily to crowded panels and complex conductor layouts.

Confined Spaces

Unlike rigid clamp sensors, the CT7040 series uses a flexible current loop that can be wrapped around large or awkwardly positioned conductors. The thin, lightweight cable allows users to perform measurements in confined spaces without disassembling wiring, reducing setup time and improving safety during inspections. Three loop sizes are available, making it easy to match the sensor to different conductor diameters and installation conditions.

Wideband Performance

With a frequency range of 10 Hz to 50 kHz, the AC Flexible Current Sensor CT7040 supports accurate waveform observation and frequency analysis across a wide operating band. This makes it suitable for monitoring inverter-driven equipment, industrial power distribution systems, and high-current machinery. While optimized for large current measurement, the sensor is not intended for low-level or leakage current applications.

Data Recording and Analysis

When paired with the Display Unit CM7290 or CM7291, the CT7040 series becomes a powerful measurement system capable of outputting data in multiple formats. Users can record raw waveforms, RMS values, peak current levels, or frequency signals to Memory HiCorders, data loggers, or oscilloscopes for further analysis. The CM7291 display unit also enables wireless data transfer via Bluetooth to the GENNECT Cross mobile app, allowing real-time monitoring on smartphones or tablets.

Reliable Field Use

Designed to operate in temperatures ranging from -25°C to 65°C, the CT7040 series performs reliably in both harsh winter conditions and hot summer environments. Its robust construction and award-winning industrial design reflect Hioki’s commitment to durability, usability, and measurement accuracy in professional field applications.

Technical Specifications Table

Specification	Details
Product Series	Hioki AC Flexible Current Sensor CT7040
Measurement Type	AC current
Maximum Current	6000 A AC
Frequency Range	10 Hz to 50 kHz
Safety Rating	CAT IV 600 V, CAT III 1000 V
Loop Size Options	φ100 mm, φ180 mm, φ254 mm
Models Available	CT7044, CT7045, CT7046
Output Modes	Waveform, RMS, Peak, Frequency
Operating Temperature	-25°C to 65°C
Compatible Display Units	CM7290, CM7291
Data Output	Memory HiCorders, data loggers, oscilloscopes
Wireless Capability	Bluetooth via CM7291 and GENNECT Cross app
Application Focus	Large current measurement, site inspections