Hioki 3274 Instruction Manual

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1 Notes on Use 4 Chapter 1 Overview 9 1.1 Product Overview 9 1.2 Features 9 1.3 Names of Parts 10 1.4 Parts of the Sensor 11 Chapter 2 Specifications 13 2.1 Product Specifications 13 2.2 Standards Applying 14 Chapter 3 Measurement Procedure 17 3.1 Notes on Use 17 3.2 Preparations for Measurement 20 3.3 Demagnetizing and Zero Adjustment 21 3.4 Measurement Procedure 22 ...

Safety Standards, and has been thoroughly tested for safety prior to shipment. However, mishandling during use could result in injury or death, as well as damage to the device. Be certain that you understand the instructions and precautions in the manual before use. We disclaim any responsibility for accidents or injuries not resulting directly from device defects. Introduction In ...

should refer to a corresponding topic in the manual (marked with the symbol) before using the relevant function. In the manual, the symbol indicates particularly important information that the user should read before using the device. Wear appropriate protective insulation (insulating rubber gloves and boots, helmet and etc.) when connecting and disconnecting from live electric cir ...

This device conforms to the safety requirements for CAT II (600V), CAT III (300V) measurement instruments. To ensure safe operation of measurement devices, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT I to CAT IV, and called measurement categories. These are defined as follows. CAT I : Secondary electrical circuits that are connected to a w ...

hazards, follow these precautions. � Never attach the clamp to a circuit that operates at more than the maximum rated voltage to earth. � For safety's sake, avoid clamping around bare conductors, while clamping or measuring. � While clamping and measuring, do not touch the clamp in front of the barrier or the conductor being measured. � Be careful to avoid damaging t ...

connected to the output terminal (BNC) on this device is equipped with any other measurement terminals, take the following precautions to ensure that the other instrument does not form a bridge between the probe and any hazardous live of a part. 1. Isolate the terminal to which the probe is connected from other terminals on the measuring instrument using basic insulation conforming t ...

waveform monitoring instrument (oscilloscope or recorder) and other measurement instruments to which this device is connected � When using a measurement instrument that does not provide isolation between its input terminals and chassis or other input terminals, please pay attention to the following points. If a signal is applied to an input terminal other than that to whic ...

or shock during transport and handling, and be especially careful to avoid dropping. � Do not store or use the device where it could be exposed to direct sunlight, high temperature, humidity, or condensation. Under such conditions, the device may be damaged and insulation may deteriorate so that it no longer meets specifications. � Before using the device the first ...

clamping them onto the conductor to be measured. The facing surface of the core section can be scratched while it is open. NOTE � Correct measurement may be impossible in the presence of strong magnetic fields, such as near transformers and high-current conductors, or in the presence of strong electromagnetic fields such as near radio transmitters. Service / Maintenance � To ...

―――――――――――――――――――――――――――――――――― Chapter 1 Overview 1.1 Product Overview 1.2 Features This device can be directly connected to a BNC input connector of a waveform measuring instrument such as an oscilloscope or recorder, and by clamping on a conductor to be measured, allows the current waveform to be easily captured. � Highly accurate current detection. � Easy current measurement. � Broadband frequency characteristics DC to 10 MHz. � Large di ...

―――――――――――――――――――――――――――――――――― Current direction indication Terminator Sensor cable Power supply cable "UNLOCK" indication (inside) Sensor "LOCK" indication 3 4 1 5 2 2 7 8 6 9 1.3 Names of Parts External view ...

―――――――――――――――――――――――――――――――――― 1.4 Parts of the Sensor 1. Clamp This clamps around the conductor to be measured. 2. Slider This slider opens the clamp. Always use it to open and close the clamp. 3. Lever This lock mechanism keeps the clamp closed. 4. Sensor head This clamps the conductor being measured, and carries out the actual current measurement. It is a precision assembly including a molded component, a ferrite core, and a Hall effect element ...

―――――――――――――――――――――――――――――――――― NOTE 8. Output connector The current waveform of the measured conductor is output at a constant rate (0.01 V/A). Connect to the BNC input connector of the waveform measuring instrument. � The output of this device is terminated internally. Use a high- impedance input to the measuring instrument. With an input impedance of 50 Ω, accurate measurement is not possible. � If using BNC-banana plug adapters or similar ...

―――――――――――――――――――――――――――――――――― Bandwidth DC to 10 MHz (-3 dB) (Typical characteristics shown in Fig.1) Rise time 35 ns or less Maximum continuous input range 150 A Derating according to frequency shown in Fig.2 Maximum peak current value Non-continuous 300 A peak; at pulse width 30 μs, 500 A peak Output voltage rate 0.01 V/A Amplitude accuracy To 150 A: 1.0% rdg. 1 mV 150 A to 300 Apeak: 2.0% rdg. (DC, and 45 to 66 Hz) Noise Equivalent to 2 ...

―――――――――――――――――――――――――――――――――― Operating temperature and humidity range 0 to 40 (32 to 104 ), 80 %RH or less (no condensation) Storage temperature and humidity range -10 to 50 (14 to 122 ), 80 %RH or less (no condensation) Location for use Indoor, altitude up to 2000 m (6562 feet) Period of guaranteed accuracy 1 year (Opening/Closing up to 10,000 times) Effect of external magnetic fields Equivalent to a maximum of 150 mA (in a DC or 60 Hz, 4 ...

―――――――――――――――――――――――――――――――――― Fig.1 Frequency characteristics (Typical characteristics) Frequency [Hz] Amplitude [db, 0dB=1 V] Frequency [Hz] Maximum input current [Arms] Fig.2 Derating according to frequency Input impedance [ohm] Fig.3 Input impedance (Typical characteristics) Frequency [Hz] ...

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