AC/DC CURRENT SENSOR CT7822

One of the industry’s smallest current sensors

Key Feature

  • Exceptional performance in a compact package
  • Easy to install in confined locations with complex wiring
  • Rated current: 20 A AC/DC

Model No. (Order Code)

CT7822 20 A AC/DC, φ 5 mm

Compact, non-contact, and high-accuracy

Multiple sensors can be easily installed, even in confined spaces and locations with complex wiring.
Compact sensor makes possible high-performance, high-accuracy measurement.

Broad operating temperature range

Operating temperature range: -40°C to 85°C
Low-level DC current can be measured with a high degree of accuracy, even in environments where the ambient temperature varies.

Measurement of Leakage Current in EV Power Management

In the domain of e-mobility, especially electric vehicles (EV), range extension is one of the most important priorities. To boost range, it’s important to measure power consumption and leakage current not only for batteries and powertrains, which use a large amount of power, but also for devices such as ECUs and electrical accessories.

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Scope 3 emission reduction through recording of current consumption and heat energy loss

To attain Scope 3 (*1) emissions targets and ensure alignment with decarbonization goals, it is important to accurately understand the impact of our products on the environment.
We will offer tips to aid developers striving for Scope 3 compliance, focusing on techniques to pinpoint energy losses in electronic components through current and temperature data acquisition.

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Basic specifications

Accuracy guaranteed: 1 year
Rated measurement current 20 A AC/DC
Max. allowable input 30 A rms continuous (±43 Ap)
Bandwidth DC to 100 kHz
Basic accuracy DC± 0.3% rdg. ±0.1% f.s.
Core diameter φ 5 mm or less
Output connectors HIOKI PL 14
Operating temperature range Sensor: -40°C to 85°C, 80% RH or less (non-condensing)
Relay box: -25°C to 50°C, 80% RH or less (non-condensing)
Dimensions Sensor: 76.5W × 23.4H ×14.2D mm (excluding protrusions and the cable)
Relay box: 80W × 20H × 26.5D mm (excluding protrusions and the cable)
Weight 140 g
Output cable length 4 m (between sensor and relay box), 0.2 m (between relay box and output connector)
Included accessories Colored labels (for channel identification), Carrying case, Instruction Manual, Operating Precautions

Extension cable (5)


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