Model CL155, AC Current (0-200-600A),
AC Voltage true RMS Clamp-on Meters

ACA, ACV, DCV, Ohm, Continuity Check Clamp-on Tester for AC Current
(for conductors up to 54 mm in diameter)
Yokogawa CL155 Clamp-on Meters
  • 3 1/2 digit LCD display
  • AC current measurement with current ranges up to 2000A
  • True RMS
  • AC/DC voltage and resistance measurements
  • DC output
  • 54mm in diameter of measurable conductor
  • Mean value display
  • DC output function
  • Data hold function
  • Sleep function
  • Approved for conformity to safety standards:
    EN61010-1,EN61010-2-031, EN61010-2-032 (CAT. III 600 V, CAT. II 1000 V)

* All Clamp-on Meters include Test Leads (where applicable) and a carrying case

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  • Preventative maintenance
  • Testing for current leakage on branch circuits
  • Measuring current draw of motors and motor control circuits
  • Measuring Loads


The CL155 is a versatile and highly accurate Clamp-on meter with a array of features ideal for most applications. The CL155 is the true RMS version of the CL150 series, with the added benefit of being able to provide a better reading representation of waveforms with distortions and harmonics.. This unit is rugged, reliable and cost effective. Jaws accommodate up to 30mm conductors.
  • Literature
  • Specifications
Literature and Technical Information
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Clamp-on Meters – Portable Test Instruments

++ CL155 Clamp-on Meters| Specification sheet
Model: Yokogawa CL155 Clamp-on Meters
Display LCD (Digital display:1999 counts)
Specific Accuracies
AC Accuracy (400A): 1.0+3(50/60Hz)
AC Accuracy (2000A): 2.0+3(50/60Hz)
AC Voltage Accuracy (40/400V/750V) 1.0+2(50/60Hz)
DC Voltage Accuracy (40/400V/1000V) 1.0+2
Resistance Accuracy (400/4k/40k/400kΩ) 1.5+2, Beeps at below 50± 35Ω (continuity check)
DC Output Accuracy (400A, 0~400mV) .5۫% rdg ± 0.5mV (50/60Hz)
.5% rdg ± 0.5mV (40~1kHz)
General specifications
Crest Factor (50/60Hz)
Frequency Accuracy 1.2+4, Beeps at below 30Ω (continuity check)
Method of detection True RMS
Response Time Approx. 2 seconds
Range Switching Manual-range (on AC current range) / Auto-range (on AC voltage range, resistance range)
Data Hold On all range
Peak Hold On all range
Influence of external magnetic field 1A or less at 400A/m
Influence of conductor position ± (2% rdg + 3dgt) or less
Safety Standard Conforms EN 61010-1, EN61010-2-031, EN61010-2-032
Circuit Voltage 1000Vrms or less
Withstanding Voltage 5.55kV AC for one minute
Sleep Function Automatically powered down in about 10 minutes after the last switch operation
Diameter of measurable conductor 54mm at maximum
Operating temperature: 0-40°C
Relative Humidity: 85% RH or less (no condensation)
Dimensions Approx. 105(W) x 247(H) x 49(D)mm
Weight Approx. 470g
Accessories Clamp Adapter (Model 99025), Output Cable for Terminal Screw (Model 91019), Carrying Case (Model 93034), Output Plug (Model 98012), Test Lead (Model 98011), User’s manual (IM CL155), batteries
Power Supply R6P(SUM-3)x2 or LR6x2
Battery Life Approx. 150 hours (continuous)
Consumed Current Approx. 5mA