300 AMP AC CLAMP ADAPTOR

OUTPUT VOLTAGE: 1mV AC Per 1A AC

CATII 600V

CA300

User’s Guide

Model CA310

300A AC Current Clamp-on

MultiMeter Adaptor

Introduction

Congratulations on your purchase of the Extech CA310 300 Amp AC Clamp-On MultiMeter

Adaptor. With this clamp adaptor an AC current can be safely measured by simply clamping

around a single conductor. The adaptor outputs an AC mV signal that is proportional to the

measured AC current. The DMM mV reading (times 10) is equivalent to the value of the AC

current. Careful use of this device will provide years of reliable service.

Specifications

Sensor type

Induction coil

Measurement Range

0.1 to 300 Amps AC

Adaptor Output

10mV AC output to DMM per 1A AC measurement

Frequency range

50/60Hz

Working voltage

600V CAT II (IEC 1010-1)

Maximum output impedance 45

Ω

Accuracy

± (3.0% + 10mV) for readings less than 50A

± (2.0% + 5mV) for readings greater than 50A

Temperature coefficient

0.2 times the specified accuracy per

Jaw size

1.2" (30mm)

Operating Conditions

32 to 122

Dimensions/Weight

3.2 x 6.1 x 1.4" (80 x 156 x 35mm); 7.8 oz. (220g)

NOTE: Accuracy is specified for a period of one year for ambient conditions 64

(18

Safety

Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must

refer to the manual for further information.

This symbol indicates that double insulation is used.

WARNING: This indicates that a potentially hazardous condition which, if not avoided,

could result in death or serious injury.

Safety Precautions

1.

WARNING: Improper use of this meter can cause damage, shock, injury or death.

Read and understand this manual before operating the meter.

2.

Inspect the condition of the test leads and the meter itself for any damage before

operating the meter. Repair or replace any damage before use.

3.

Do not use on non-insulated conductors at voltages greater than 250VAC rms or DC.