MR8740T_Quick guide_eng_20191016H.pdf - 第50页

44 Attaching Connection Cords Connecting a current sensor with Model U8977 3CH Current Unit Y ou can directly connect a current sensor with the sub model-number “-05,” which has a metal connector (ME15W). Hold the metal …

Attaching Connection Cords

Current sensor

Familiarize yourself with “Operation Precautions” (p. 8) before connecting a current sensor.

Refer to the instruction manual that comes with each current sensor for details on specications

and directions for use.

CAUTION

Do not connect and remove a current sensor while the instrument remains on.

Doing so will cause damage to the current sensor.

Up to nine sensors can connect to Model 8971 Current Unit and Model U8977 3CH Current Unit all

together.

Connectable current sensors



: Connectable with Model U8977; –: Conversion cable required

Model

number

Model name

Maximum input

current

Frequency

Directly

connectable

Connector*

9709

AC/DC Current Sensor 500 A DC to 100 kHz

–*

Plastic

9709-05



Metal

9272-05

Clamp on Sensor 20 A / 200 A 1 Hz to 100 kHz



Metal

9272-10 –*

Plastic

CT6841

AC/DC Current Probe 20 A DC to 1 MHz

–*

Plastic

CT6841-05



Metal

CT6843

AC/DC Current Probe 200 A DC to 500 kHz

–*

Plastic

CT6843-05



Metal

CT6844

AC/DC Current Probe 500 A DC to 200 kHz

–*

Plastic

CT6844-05



Metal

CT6845

AC/DC Current Probe 500 A DC to 100 kHz

–*

Plastic

CT6845-05



Metal

CT6846

AC/DC Current Probe 1000 A DC to 20 kHz

–*

Plastic

CT6846-05



Metal

CT6862

AC/DC Current Sensor 50 A DC to 1 MHz

–*

Plastic

CT6862-05



Metal

CT6863

AC/DC Current Sensor 200 A DC to 500 kHz

–*

Plastic

CT6863-05



Metal

CT6865

AC/DC Current Sensor 1000 A DC to 20 kHz

–*

Plastic

CT6865-05



Metal

CT6875 AC/DC Current Sensor 500 A DC to 2 MHz



Metal

CT6876 AC/DC Current Sensor 1000 A DC to 1.5 MHz



Metal

CT6877 AC/DC Current Sensor 2000 A DC to 1 MHz



Metal

*1: Metal connector (ME15W)

Plastic connector (PL23)

*2: The probe/sensor requires Model CT9900 Conversion Cable to connect with Model U8977 3CH Current

Unit.

The probe/sensor requires Model 9318 Conversion Cable to connect with Model 8971 Current Unit.

Preparing for Measurement

Attaching Connection Cords

Connecting a current sensor with Model U8977 3CH Current Unit

You can directly connect a current sensor with the sub model-number “-05,” which has a metal

connector (ME15W).

Hold the metal

sleeve.

Point the widest key upward.

Align the connector guides of the cable with

those of the module connector.

Straightly insert the connector until it locks.

Hold the part other than metal to insert the

connector.

The instrument automatically recognizes the

model of the current sensor.

How to disconnect the current sensor

Hold and pull the metal collar, which releases

the lock.

Pull the connector.

Using Model CT9900 Conversion Cable, you can connect a current sensor without the sub model-

number “-05,” which has a plastic connector (PL23), with Model U8977 3CH Current Unit.

Model CT9900

Conversion Cable

When Model CT9900 Conversion Cable is used, the instrument recognizes Model CT6846 or

CT6865 (1000 A rating) as a 500-A AC/DC sensor. Set the conversion ratio to 2.00.

Attaching Connection Cords

By using Model CT9920 Conversion Cable (optional), you can connect a current sensor of Model

CT7000 series with Model U8977 3CH Current Unit. The instrument cannot recognize any sensor

with Model CT9920 connected.

Select a mode in the setting screen.

Supported models Model CT7631, Model CT7636, Model CT7642, Model CT7731, Model CT7736,

Model CT7742, Model CT7044, Model CT7045,

Model CT7046

Model CT9920

Conversion Cable

For current sensor

Connecting a current sensor with Model 8971 Current Unit

By using Model 9318 Conversion Cable*, you can connect a current sensor without the sub model-

number “-05,” which has a plastic connector (PL23), with Model 8971 Current Unit..

*: Model 9318 Conversion Cable is an accessory of Model 8971 Current Unit.

Model 9318

Conversion Cable

Model 8971 Current Unit

Align the guides of the conversion cable with

those of the sensor connector on the module,

and straightly insert the plug until it locks.

Align the guides of the current sensor to

be used with those of the conversion cable

connector, and straightly insert the plug until it

locks.

The instrument automatically recognizes the

model of the current sensor.

Clamp the current sensor around a line of a

measuring object.

How to connect the cable and a sensor

Hold and pull the plastic collar of the

conversion cable, which releases the lock, and

the remove the connector.

Hold and pull the plastic collar of the current

sensor, which releases the lock, and the

remove the connector.

When measuring currents with a voltage module

Using Model 9018-50 Clamp on Probe, you can measure a current using a voltage measurement

module such as Model 8966 Analog Unit.

Conguring the scaling settings allows measured waveforms to be displayed as current values. For

the setup procedure, refer to “Converting Input Values (Scaling Function)” of the Instruction Manual.

Preparing for Measurement