The world first clamp tester which can detect DC current component in AC circuit



Model 800P is the world’s first clamp meter which can detect small DC current in AC circuit in addition to general AC/DC current measurement.

By using this clamp meter, DC offset surveillance can be made easily in the actual fields like as solar inverters, etc. and it is possible to check if the DC component in AC circuit is less than 1% of the rated AC current or not, according to the regulation.

If DC component flows into transformers

In case, the bias magnetism phenomenon may happen and it may cause DC magnetic flux in the iron core. Consequently, it may possibly have bad influence on the connected apparatus by flowing larger excitation current and there would be possibility of transformer burnout due to the selective heating

Specification M800P
Measuring Function ACA、DCA、DC% in ACA、ACV、DCV
Measuring Range ACA(15A/150A auto)、DCA(15A/150A auto)、%(DCA in ACA)、
ACV(150V/600V auto)、DCV(150V/600V auto)
AC Detection True RMS(Analog Arithmetic Method)
DC Current in AC % Display
Accuracy Tolerance:23℃±5℃、less than 80%RH、Conductor to be measured at the center of CT
Range/ Auto Range/ Min. Resolution/ Measuring Range/ Accuracy
DCA/ 15A/ 0.01/ 0.00~15.00A/ ±1.0%rdg±5dgt
DCA/150A/ 0.1/ 15.0~150.0A/ ±2.0%rdg±5dgt
ACA/ 15A/ 0.01/ 0.00~15.00A/ ±1.0%rdg±5dgt
ACA/ 150A/ 0.1/ 15.0~150.0A/ ±2.0%rdg±8dgt
DCV/ 150V/ 0.1/ 0.0~150.0V/ ±1.0%rdg±5dgt
DCV/ 600V/ 1/ 150~600V/ ±1.0%rdg±5dgt
ACV/ 150V/ 0.1/ 0.0~150.0V/ ±1.0%rdg±5dgt
ACV/ 600V/ 1/ 150~600V/ ±1.0%rdg±5dgt
CT Inside Diameter φ23mm
Switching Method Rotary Switch
Measuring Method CT Clamp Method
A/D Conversion Successive Approximation Method
Display LCD with annunciator
Over Range Display 「OL」mark on LCD
Data Hold 「DH」mark on LCD, holding the displayed value
Zero “0” Adjustment By press 0SET switch at DCA range,「△」mark on LCD and 0 display
Sampling Rate 2 times/sec.
Low Battery Indication 「B」mark on LCD in case of less than operation voltage
Circuit Voltage Less than AC/DC 600V(Insulated Conductor)
Operating Temperature 0℃~40℃、less than 80%RH (w/o condensation)
Storage Temperature -10℃~60℃、less than 70%RH (w/o condensation)
Withstanding Voltage AC3700V/1 minute, between CT jaw and handle
Safety Standard IEC1010-1、CATⅡ600V
Auto Power-off Approx. 10 minutes after the final operation in power on
Power Supply AAA size alkaline batteries(LR03×3)
Current Consumption Approx. 20mA
Outer Dimension Approx. 48mm×178mm×24mm
Weight Approx. 120g(without batteries)
Accessories AAA size alkaline batteries(LR03×3)
Instruction Manual
Test Leads for Voltage Input (Red/Black)
Soft Carrying Case
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