Digital Double Clamp Phase Meter
Model: ET-4000
Digital double clamp phase meter is specially designed for spot test of phase, voltage, current, AC leakage current, and phase sequence. It is a product with double channel, multifunction digital mode, hand-hold characteristic with the newest CT technology and digital integrated technology in design ensure its high accuracy, high stability, high reliability in years use. The meter could be widely applied in those fields as electricity, communications, meteorology, railroad, oilfield, construction, measurement, scientific & research teaching institutes, industrial and mining establishments.
Digital double clamp phase meter is able to conduct the situ test of random phase of diphase voltage (U-U) or diphase current (I-I), and any phase between voltage and current (U-I). It also able to distinguish the inductive circuit and capacitive circuit, the sequence of three-phase voltage, detect the connection group of transformer, measure the secondary thermal system and bus differential protective system, read-out the phase sequence among the CT group of differential protection, and detect the connection of watt-hour meter is correct or not , etc
Digital double clamp phase meter adopted the newest CT technology, does require breaking down the tested wire, it is non-contact measurement. when test the phase between U1-U2, the two line-input is absolutely insulated isolation, the crust is made of project insulant, with a rubber shake-proof protecting jacket, practically to ensure the safe of operation, and to avoid the possibility of wrong connection result in short circuit then burn down the meter.
¢ò . Technical specifications
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Function
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random phase measurement, AC current and leak current measurement, AC Voltage detection, distinguish the inductive circuit and capacitive circuit, sequence of three-phase voltage detection and connection group of transformer detection, etc.
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Power supply
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DC9V alkaline dry battery LR6×6 continuous duty : 300h
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LCD
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3-1/2 LCD display
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Dimension
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92mm×192mm×50mm
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LCD dimension
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Display domain:64mm×54mm; font high:40mm
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Clamp mouth
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φ7.5mm (φ40mm lectotype)
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Measuring range
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Phase: 0 to 360 angle; current: 0 to 200mA/2A/10A; voltage: 0 to 20V/200V/500V
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Resolution
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Phase: 1angle; current: 0.1mA; voltage: 0.01V
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Accuracy
(50Hz,23C±1C, 40-60%RH)
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Phase: ±3 angle
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Current: ±1%±2dgt
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Voltage: ±1.2%±2dgt
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line voltage
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Line test under AC500V
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Sampling speed
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About 3 times /s
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Signal frequency
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sine wave 45Hz to 55Hz β=0.05
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Data hold
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Data holding function: displayed by “DH” symbol
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Back light function
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Blue back light ,suit for dark occasion
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Automatic shutdown
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After starting up 15min, it shutdown automatically to reduce battery consumption
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Battery voltage
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When battery voltage is low ,battery low voltage symbol will filker to remind replacing battery;
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Quality
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Core about590g(with battery), long flat nose current pliers about:175g×2, big round tongs clamp:120g
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Work temp. & humidity
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-10C to 40C;85%rh below
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Storage temp. & humidity
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-20C to 60C;70%rh below
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Driving point impedance
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AC voltage driving point impedance: 2MΩ; when test phase U1-U2:40KΩ
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Insulation intension
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≥10MΩ(Between wire of meter and crust,two voltage input port)
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Voltage bear
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Between port of voltage input and box, split core type current transformator and clamp handle& winding coil: 1000V/50Hz, 1min experiment can be reach when sine wave AC voltage 500V/50Hz between port of voltage input
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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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