Digital Double Clamp Phase Meter
Model: ET-4100A
Digital double clamp phase meter is a well-developed meter specifically designed for field testing, featuring high accuracy, high stability, low power consumption, easiness to use and so on. It can directly measure phases between two voltages, two currents and phase between the voltage and current; in addition, it can also be used to distinguish three-phase sequence, transformer wiring group, inductive and capacitive circuits, test second circuit and bus differential protection systems, read the phase relationship between CTs of the differential protection, etc.
Digital double clamp phase meter has a large LCD screen displaying words as high as 40mm against a blue backlight, and looks exquisite and comfortable.
Digital double clamp phase meter applies to electric power, petroleum chemical industry, metallurgy, railway, and meteorology, industrial and mining enterprises, scientific research institutions, measurement sector and so on.
2. Technical Specification
1). Base Conditions and Working Conditions
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Influence Quantity
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Base Condition
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Working Conditions
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Remark
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Ambient Temp
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23C±1C
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-10C to 40C
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Ambient Humidity
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40% to 60%
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＜80%
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Signal Waveform
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sine wave
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sine wave
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β=0.05
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Signal Frequency
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50Hz±1Hz
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45Hz to65Hz
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Meter Working Volt
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9V±0.1V
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9V±1V
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External Electric,
Magnetic Field
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To be avoided
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Measured Wire
Position
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Measured wire at approximately the geometric center of the clamp
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2). General Specification
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Function
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Phase, direct test of phase sequence; transformer
groups, inductive, capacitive circuit discrimination
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Power
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DC 9V alkaline batteries(1.5V AA×6)
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Consumption
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About 35mA at most with enabled backlight, battery working continuously Consumption for about 40 hours
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About 5mA with disabled backlight, battery working continuously for about 300 hours
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Display Mode
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LCD display, blue backlight, suitable for dark places
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LCD Size
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70mm×62mm
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LCD Display Field
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64mm×54mm
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Meter Size
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196mm×92mm×54mm
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Clamp Size
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φ7.5mm×13mm
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Sampling Rate
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About 3 times/second
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Measurement Range
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0 to360 angle
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Intrinsic Error
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±3 angle
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Resolution
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±1 angle
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Measured Signal Amplitude in Phase Test
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U1-U2 phase test: 30V to 500V
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I1-I2 phase test: 10mA to 10.00A
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U1-I2 or I1-U2 phase test: 10V to500V, 10mA to 10.00A
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Data Hold
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Press HOLD key to keep data, "DH" symbol appears
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Automatic Shutdown
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Automatic shutdown about 15 minutes later after launching to reduce battery consumption
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Voltage Detection
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Low battery symbol “ " appears to remind the replacement of battery when the battery voltage drops below 7.8V to 8V.
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Weight
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Main Unit about 550g, clamp about 170g×2, test line about 250g
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Test Line Length
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1.5m
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Current Clamp Length
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2m
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Working Temp. and Humidity
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-10C to 40C; below 80%Rh
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Input Impedance
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Input impedance for voltage range: 2MΩ
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Input impedance when testing U1U2 phase: 40KΩ
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Withstand Voltage
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Withstand 1000V/50Hz sine wave AC voltage for 1 minute between the meter lines and shell;
Withstand 500V/50Hz AC voltage sine wave for 1 minute between the two voltage inputs
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Insulation
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≥10MΩ between meter lines and shell or between the two voltage inputs
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Structure
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Double insulation
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Accessories
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Host: 1pcs; Meter Box: 1pcs; Current Clamp: 2pcs; Test Line: 4pcs(2 Red and 2 Black)
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