Description
Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology.
The CM4375-50 is a 1000 A AC/DC True RMS clamp meter that features a uniquely designed slim jaw that lets you easily get into the narrow gaps between cables in crowded electrical distribution boxes without fear of damaging the cables or the clamp meter.
The broad IP54 dustproof and waterproof enclosure to enable professionals to work quickly in challenging situations including the development, repair, and maintenance of equipment and devices such as electric vehicles.
Additionally, the high-voltage DC measurement capability of up to 2000 V (*1) is ideal for the clamp maintenance inspections of electrical and solar power equipment.
Innovative Jaw provides Remarkable Accessibility
Panel overcrowding is commonly found in many power distribution breakers and termination boxes. The newly designed thin sensor gets into even the most limited spaces. Eliminate the issues of trying to find the right wire or forcing the clamp around thick cables.
Damage-resistant jaws! Guaranteed for 30,000 open-close cycles
The new and improved design features stronger jaws (the current sensor portion of the instrument) and a dramatic boost in the duration of the warranty from 10,000 to 30,000 open-close cycles to ensure the instrument will provide even more years of reliable use. The CM4375siries deliver the dual functionality of ease of clamping and resistance to damage.
Excel® Direct Input Function (*1)
Boost work efficiency in the field by letting you directly transfer measurement data to (i.e., enter measured values directly into) templates created as Excel®.
Safe Inspection of Solar Installations with High Voltage
DC High V Probe Mode
– Enables high voltage measurement up to CAT III 2000 V
– Safely measure solar installations like the mega-solar without interrupting the grid by simply connecting the DC High Voltage Probe P2000 to compatible Hioki clamp meters and digital multimeters (DMMs)
Inrush (Rush current): Assess transient currents at motor startup
Can simultaneously measure inrush current in RMS as well as maximum crest values at motor startup and for welding currents.
The clamp meters automatically detect the duration of the inrush current (which can range from several dozen milliseconds to several hundred milliseconds) and measure the current during that interval, enabling them to yield more accurate measurements than standard clamp-on meters whose measurement interval is fixed to 100 ms.
Use the inrush current feature for motor installation and maintenance to prevent circuit breakers from tripping, especially with high efficiency motors that have inrush current many times greater than the steady-state current of the motor.
Basic Specifications
DC Current range | 1000 A, (Max. display 999.9 A) , Basic accuracy: ±1.3% rdg. ±0.3 A (at 30.1 A – 999.9 A) |
---|---|
AC Current range | 1000 A (Max. display 999.9 A, 10 Hz to 1 kHz, True RMS), Basic accuracy 45-66 Hz: ±1.8% rdg. ±0.3 A (at 30.1 A – 900.0 A) |
Crest factor | 1000 A range: 1.5 |
DC+AC Current range | 1000 A (DC, 10 Hz to 1 kHz, True RMS), Basic accuracy DC, 45-66 Hz: ±1.3% rdg. ±1.3 A (at 30.1 A – 900.0 A) |
DC Power range | 0.000 kVA to 1000 kVA (When using P2000: 0 kVA to 2000 kVA) (Automatically switched based on voltage range), Basic accuracy: ±2.0% rdg. ±20 dgt. |
DC Voltage range | 600.0 mV to 1000 V (When using P2000: 600.0 V to 2000 V) |
AC Voltage range | 6.000 V to 1000 V, 4 ranges (15 Hz to 1 kHz, True RMS), Basic accuracy 45 – 66 Hz: ±0.9% rdg. ±0.003 V (at 6 V) |
DC+AC Voltage range | 6.000 V to 1000 V, 4 ranges, Basic accuracy DC, 45-66 Hz: ±1.0% rdg. ±0.013 V (at 6 V) |
Resistance range | 600.0 Ω to 6.000 MΩ, 5 ranges, Basic accuracy: ±0.7% rdg. ±0.5 Ω (at 600 Ω) |
Electrostatic capacity range | 1.000 μF to 1000 μF, 4 ranges, Basic accuracy: ±1.9% rdg. ±0.005 μF (at 1 μF) |
Frequency range | 9.999 Hz to 999.9 Hz, 3 ranges, Basic accuracy: ±0.1% rdg. ±0.003 Hz (at 9.999 Hz) |
Temperature (K) | -40.0°C to 400.0°C, add temperature probe accuracy to basic accuracy of ±0.5% rdg. ±3.0°C |
Other functions | Continuity check, Diode check, Automatic AC/ DC detection, DC current and DC voltage polarity detection function, MAX/MIN/AVG/ PEAK MAX/PEAK MIN value display, Low-pass filter function, Display value hold, Auto hold, Backlight, Auto power save, Buzzer sound, Zero-adjustment |
Dustproof, waterproof | IP54 (Storage or measurement of current of an insulated conductor) |
Power supply | LR03 Alkaline battery ×2 Continuous use: approx. 40 hr (without Z3210 installed), approx. 20 hr. (with Z3210 installed and using wireless communications) Other conditions: 100 A AC measurement, backlight off, 23°C reference value |
Core jaw diameter | φ34 mm (1.34 in) |
Smallest dimension of jaw cross-section | 9.5 mm (0.37 in) (Range value of 44 mm (1.73 in) from the tip of the jaw) |
Dimensions and mass | 65 mm (2.56 in) W × 242 mm (9.53 in) H × 35 mm (1.38 in) D mm, 350 g (12.3 oz) |
Included accessories | Test Lead L9300, Carrying Case C0203, LR03 Alkaline battery ×2, Instruction Manual ×2, Operating Precautions ×1 |