―――――――――――――――――――――――――――――――――――――― Introduction Thank you for purchasing this Hioki 9275 Clamp-On AC Sensor. In order to use this product effectively and to ensure that it enjoys a long operational life, read this Instruction Manual carefully and then retain it for future reference.
―――――――――――――――――――――――――――――――――――――― Notes on Safety This instrument is designed to prevent accidental WARNING shock to the operator when properly used. However no engineering design can render safe an instrument which is used carelessly. Therefore, this manual must be read carefully and completely before making any measurement.
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―――――――――――――――――――――――――――――――――――――― The following symbols are used in this Instruction Manual to indicate the relative importance of cautions and warnings. Applies to operations which if carried out wrongly carry a very serious danger of accident to the user, DANGER including the possibility of a fatal accident. Applies to important notes on operation and WARNING handling accompanied by a risk of serious injury or...
Inspection After receiving the equipment, check it to make sure that it was not damaged during transport. In the event of any damage, or failure to operate according to specification, contact your nearest Hioki representative of service agent directly. ――――――――――――――――――――――――――――――――――...
In the event of any damage, contact your nearest Hioki representative of service agent directly. ・If there is any type of dust or dirt on the core contact surfaces, measurements may be affected.
―――――――――――――――――――――――――――――――――――――― Chapter 1 General 1.1 Product Overview When connected to the 3270 Current Monitor or the 3271 AC Current Monitor, this clamp-on sensor can output current waveforms without any need to cut the conductor being measured, simply by clamping the sensor onto the connector.
―――――――――――――――――――――――――――――――――――――― 1.2 Features Highly accurate current detection Easy current measurement Complete sensor compatibility Broadband frequency characteristics 0.5 Hz to 1 MHz 3 dB) Large opening that permits measurement of high current levels. Protect function at excessive input ―――――――――――――――――――――――――――――――――― 1.2 Features...
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―――――――――――――――――――――――――――――――――――――― Chapter 2 Identification of Indicators Current direction mark Lever Facing surface Sensor cable Core section Sensor connector ――――――――――――――――――――――――――――――――――...
―――――――――――――――――――――――――――――――――――――― Chapter 3 Measurement Procedure For details on how to take measurements, refer to a section Measurement Procedure" of the Current Monitor Instruction manual. 3.1 Notes on Use In order to prevent short circuits and injury or DANGER death, only use this sensor on circuits carrying less than 600 V peak.
―――――――――――――――――――――――――――――――――――――― 3.2 Measurement Procedure (1) Gently press the lever of the sensor to open the core section. (2) Position the sensor so that the current direction mark on the sensor part points in the direction of the load and so that the conductor being measured is centered, and then close the clamp.
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―――――――――――――――――――――――――――――――――――――― ・Accurate measurements are not possible when NOTE measuring overlapping DC components of ten and several amperes or more. ・Immediately after the power is turned on and open or close sensor, depending on the condition of the internal circuitry, the output waveform will fluctuate up and down for approximately several ten seconds until it stabilizes.
―――――――――――――――――――――――――――――――――――――― Chapter 4 Product Specifications (Accuracy is guaranteed at 23 ℃ ±3 ℃ after the power has been on for 30 minutes) Rated current 150 A AC ■ Output voltage 1.5 V AC/150 A AC ■ 50 Ω Output resistance ■...
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―――――――――――――――――――――――――――――――――――――― and humidity (no condensation) Storage temperature 10 to 50 ℃, 80 % RH or less ■ (no condensation) and humidity Effect of external Equivalent to a maximum of 1 A ■ (in a 400 A/m AC current magnetic fields magnetic field) Effect of conductor Within ±1 %...
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―――――――――――――――――――――――――――――――――――――― Frequency (Hz) Fig. 1 Input Impedance Frequency (Hz) Fig. 2 Maximum Input Range Phase Amplitude Frequency (Hz) Fig. 3 Frequency Characteristics ――――――――――――――――――――――――――――――――――...
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