Hioki CT6710 Manual de usuario

CT6711

CURRENT PROBE

CT6710

Instruction Manual

Feb. 2019 Edition 1

CT6710A961-00 19-02H

CT6711

CURRENT PROBE

CT6710

Instruction Manual

Feb. 2019 Edition 1

CT6710A961-00 19-02H

Measurement Procedure

Be sure to familiarize yourself with the “Usage Notes”

section (p. 8), each instruction of use, and safety notes

presented at the beginning of each instruction of use.

Inspecting the Device Before Use (p. 26)

Preparing for Measurement (p. 28)

Provide power to the device.

Connect the termination unit to the host waveform

measuring instrument.

Execute demagnetization and automatic zero-

adjustment.

Measuring Currents (p. 40)

Clamp the sensor around a conductor to be

measured.

Measure a current.

Finishing Measurement (p. 64)

CT6710A961-00

Connection Example

Waveform measuring instrument

Model 3269 Power Supply

Power source

Load

See “Example of connection to the circuit to be measured”

(p. 48).

Contents

Introduction...........................................................................1

Notations ..............................................................................2

Conrming Package Contents..............................................5

Safety Notes.........................................................................7

Usage Notes.........................................................................8

1 Overview 13

1.1 Product Overview............................................13

1.2 Product Features.............................................14

1.3 Name and Function of Each Part ....................16

Termination unit ........................................................ 16

Junction box (keys, LEDs) ........................................18

Sensor ......................................................................20

1.4 Specications of Lighting up / Blinking

LEDs ...............................................................22

2 Current Measurement 25

2.1 Inspecting the Device Before Use...................26

2.2 Preparing for Measurement ............................28

Providing power to the device................................... 29

Executing demagnetization and automatic zero-

adjustment ................................................................33

2.3 Measuring Currents.........................................40

How to measure a current ........................................49

To measure a low current .........................................57

To measure a current accurately ..............................59

When the device has entered protection mode ........61

2.4 Finishing Measurement...................................64

Index

Contents

3 Specications 67

3.1 General Specications ....................................67

3.2 Specications of Input, Output, and

Measurement ..................................................69

Basic specications ..................................................69

Specications of accuracy ........................................71

3.3 Specications of Functionality.........................73

3.4 Typical Characteristics ....................................75

Frequency characteristics......................................... 75

Frequency derating curve .........................................76

Input impedance .......................................................78

Consumption current ................................................ 79

Inuence of common-mode voltage.......................... 80

4 Maintenance and Service 81

4.1 Troubleshooting...............................................82

Before sending back your device for repair ..............83

4.2 Errors ..............................................................86

Types of errors..........................................................87

4.3 Cleaning ..........................................................94

4.4 Disposal ..........................................................95

Index 97

Warranty

Introduction

Thank you for choosing the Hioki CT6710, CT6711 Current

Probe. Preserve this manual carefully and keep it handy to

make full use of this device for a long time.

Each model offers a different frequency band listed below:

Model CT6710: DC to 50 MHz

Model CT6711: DC to 120 MHz

Following manuals are provided along with these models.

Refer to manuals relevant to your purpose.

• Current Sensor Operating Precautions

Information on the device for safe operation

• Instruction Manual (this document)

Basic instructions and specications of the device

Also read the separate document “Current Sensor Operating

Precautions” carefully before using this device.

Target audience

This manual has been written for use by individuals who use

the product in question or who teach others to do so.

It is assumed that the reader possesses basic electrical

knowledge (equivalent to that of someone who graduated

from the electrical program at a technical high school).

Notations

Safety notations

In this manual, the risk seriousness and the hazard levels

are classied as follows.

DANGER

Indicates an imminently hazardous situation

that will result in death or serious injury to

the operator.

WARNING

Indicates a potentially hazardous situation

that may result in death or serious injury to

the operator.

CAUTION

Indicates a potentially hazardous situation

that may result in minor or moderate injury

to the operator or damage to the device or

malfunction.

IMPORTANT

Indicates information related to the

operation of the device or maintenance

tasks with which operators must be fully

familiar.

NOTE

Indicates advisory items related to

performance or correct operation of the

device.

Indicates a high voltage hazard.

If a particular safety check is not performed

or the device is mishandled, the operator

can suffer from a hazardous situation such

as an electric shock, burn, or even fatal

injury.

Notations

Indicates prohibited actions.

Indicates an action that must be performed.

Symbols shown on the device

Indicates cautions and hazards. When this symbol is

displayed on the device, refer to the “Usage Notes”

section (p. 8) and warning messages presented at

the beginning of each instruction of use in the Instruction

Manual, and included “Current Sensor Operating

Precautions” for more information.

Indicates that only insulated conductors appropriate to

the voltage of the circuit under test can be measured.

Symbols for various standards

Indicates the Waste Electrical and Electronic Equipment

Directive (WEEE Directive) in EU member states.

Indicates that the product conforms to regulations set

out by the EU Directive.

Notations

Others

*Additional information is presented below.

Bold Keys of the device are indicated in boldface.

Accuracy

We dene measurement tolerances in terms of rdg. (reading)

with the following meanings:

rdg.

(reading or displayed value)

The value currently being measured and indicated

on a measuring instrument.

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