MR8740T_Quick guide_eng_20191016H.pdf - 第12页

6 Safety Information Safety Information This instrument and modules are designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However , using the instrument in a …

Conrming Package Contents

Options (sold separately)

Input modules For current measurement

Model 8966 Analog Unit Model 3273-50 Clamp on Probe

Model 8967 Temp Unit Model 3274 Clamp on Probe

Model 8968 High Resolution Unit Model 3275 Clamp on Probe

Model U8969 Strain Unit Model 3276 Clamp on Probe

Model 8970 Freq Unit Model 3272 Power Supply

Model 8971 Current Unit

1-channel power supply unit for the

clamp on probes listed above

Model 8972 DC/RMS Unit

Model 8973 Logic Unit Model 3269 Power Supply

Model U8974 High Voltage Unit

4-channel power supply unit for the

clamp on probes listed above

Model U8975 4ch Analog Unit

Model U8977 3CH Current Unit Model 9709 AC/DC Current Sensor

Model U8978 4CH Analog Unit Model 9709-05 AC/DC Current Sensor

Model U8979 Charge Unit Model 9272-10 Clamp on Sensor

Model MR8990 Digital Voltmeter Unit Model 9272-05 Clamp on Sensor

Model U8991 Digital Voltmeter Unit Model CT6841 AC/DC Current Probe

Output modules

Model CT6841-05 AC/DC Current Probe

Model CT6843 AC/DC Current Probe

Model MR8790 Waveform Generator Unit Model CT6843-05 AC/DC Current Probe

Model MR8791 Pulse Generator Unit Model CT6844 AC/DC Current Probe

Model U8794 VIR Generator Unit Model CT6844-05 AC/DC Current Probe

USB ash drive

Model CT6845 AC/DC Current Probe

Model CT6845-05 AC/DC Current Probe

Model Z4006 USB Drive (16 GB) Model CT6846 AC/DC Current Probe

Logic probes

Model CT6846-05 AC/DC Current Probe

Model CT6862 AC/DC Current Sensor

Model 9320-01 Logic Probe Model CT6862-05 AC/DC Current Sensor

Model MR9321-01 Logic Probe Model CT6863 AC/DC Current Sensor

Model 9327 Logic Probe Model CT6863-05 AC/DC Current Sensor

Other

Model CT6865 AC/DC Current Sensor

Model CT6865-05 AC/DC Current Sensor

Model 9335 Wave Processor Model CT6875 AC/DC Current Sensor

For voltage generating modules

Model CT6876 AC/DC Current Sensor

Model CT6877 AC/DC Current Sensor

Model L9795-01 Connection Cable Model CT7631 AC/DC Current Sensor

Model L9795-02 Connection Cable Model CT7636 AC/DC Current Sensor

LAN cable

Model CT7642 AC/DC Current Sensor

Model CT7731 AC/DC Auto-Zero Current Sensor

Model 9642 LAN Cable Model CT7736 AC/DC Auto-Zero Current Sensor

For voltage measurement

Model CT7742 AC/DC Auto-Zero Current Sensor

Model CT7044 AC Flexible Current Sensor

Model L9197 Connection Cord Model CT7045 AC Flexible Current Sensor

Model L9198 Connection Cord Model CT7046 AC Flexible Current Sensor

(For low voltage measurement) Model CT9900 Conversion Cable

Model L9790 Connection Cord Model CT9920 Conversion Cable

Model L9217 Connection Cord Model 9555-10 Sensor Unit

Model L2200 Test Lead

Model L4940 Connection Cable Set

Model L4935 Alligator Clip Set

Model 9322 Differential Probe

Model P9000-01 Differential Probe

Model P9000-02 Differential Probe

Model 9166 Connection Cord

(For inputting voltage to Model

U8979)

The options are subject to change. Visit our website for updated information.

Safety Information

This instrument and modules are designed to conform to IEC 61010 Safety Standards, and has

been thoroughly tested for safety prior to shipment. However, using the instrument in a way not

described in this manual may negate the provided safety features.

Read the following safety notes carefully before using the instrument.

DANGER

Mishandling the instrument could result in bodily injury or even death, as well

as damage to the instrument. Familiarize yourself with the instructions and

precautions in this manual before using the instrument.

WARNING

Electricity can cause potentially serious events such as an electric shock,

heat generation, re, and an arc ash due to a short-circuit. If you have not

used electrical measuring instruments before, you should be supervised by a

technician who has experience in electrical measurement.

Protective gear

WARNING

Performing measurement using this instrument involves live-line work. To

prevent an electric shock, use appropriate protective insulation and adhere to

applicable laws and regulations.

Safety Information

Measurement categories

To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards

for various electrical environments, categorized as CAT II to CAT IV, and called measurement

categories.

DANGER

• Using a measuring instrument in an environment designated with a higher-

numbered category than that for which the instrument is rated could result in a

severe accident, and must be carefully avoided.

• Never use a measuring instrument that lacks category labeling in a CAT II to

CAT IV measurement environment. Doing so could result in a serious accident.

CAT II: When directly measuring the electrical outlet receptacles of the primary electrical

circuits in equipment connected to an AC electrical outlet by a power cord (portable

tools, household appliances, etc.).

CAT III: When measuring the primary electrical circuits of heavy equipment (xed installations)

connected directly to the distribution panel, and feeders from the distribution panel to

outlets.

CAT IV: When measuring the circuit from the service drop to the service entrance, and to the

power meter and primary overcurrent protection device (distribution panel).

Outlet

CAT II

Internal Wiring

Distribution Panel

Service Entrance

Service Drop

CAT IV

Power Meter

CAT III

Fixed Installation

The applicable measurement category is determined based on the module being used.

Refer to “Handling the instrument and modules” (p. 10).