Greenlee CM-330 Bedienungsanleitung

CM-330

Clamp-on

Ammeter

Amperímetro

con pinza

Pince

ampèremétrique

INSTRUCTION MANUAL

MANUAL DE INSTRUCCIONES

MANUEL D’INSTRUCTIONS

Read and understand all of the instructions and

safety information in this manual before

operating or servicing this tool.

Lea y entienda todas las instrucciones y la

información sobre seguridad que aparecen en

este manual, antes de manejar esta herramienta

o darle mantenimiento.

Lire attentivement et bien comprendre toutes les

instructions et les informations sur la sécurité de

ce manuel avant d‘utiliser ou de procéder à

l‘entretien de cet outil.

Description

The Greenlee CM-330 Clamp-on Ammeter is a hand-held testing device

capable of measuring up to 400 amps of alternating current.

Safety

Safety is essential in the use and maintenance of Greenlee tools and

equipment. This instruction manual and any markings on the tool provide

information for avoiding hazards and unsafe practices related to the use of

this tool. Observe all of the safety information provided.

Purpose of This Manual

This instruction manual is intended to familiarize all personnel with the

safe operation and maintenance procedures for the Greenlee CM-330

Clamp-on Ammeter.

Keep this manual available to all personnel.

Replacement manuals are available upon request at no charge.

KEEP THIS MANUAL

All specifications are nominal and may change as design improvements occur.

Greenlee Textron Inc. shall not be liable for damages resulting from misapplication or

misuse of its products.

® Registered: The color green for electrical test instruments is a registered trademark

of Greenlee Textron Inc.

CM-330

Important Safety Information

Electric shock hazard:

Contact with live circuits could result in severe

injury or death.

Read and understand this material before

operating or servicing this equipment. Failure to

understand how to safely operate this tool could

result in an accident causing serious injury or

death.

This symbol is used to call your attention to hazards or unsafe

practices which could result in an injury or property damage. The

signal word, defined below, indicates the severity of the hazard. The

message after the signal word provides information for preventing or

avoiding the hazard.

SAFETY ALERT SYMBOL

Immediate hazards which, if not avoided, WILL result in severe injury

or death.

Hazards which, if not avoided, COULD result in severe injury or death.

Hazards or unsafe practices which, if not avoided, MAY result in injury

or property damage.

Important Safety Information

Electric shock and fire hazard:

•Do not expose this unit to rain or moisture.

•Do not use the unit if it is wet or damaged.

•Use this unit for the manufacturer’s intended purpose only, as

described in this manual. Any other use can impair the protection

provided by the unit.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

•Do not operate with the case or battery door open.

•Before opening the case or battery door, remove the jaw from the

circuit and shut off the unit.

Failure to observe these warnings could result in severe injury or death.

Electric shock hazard:

Using this unit near equipment that generates electromagnetic

interference can result in unstable or inaccurate readings.

Failure to observe this warning could result in severe injury or death.

Electric shock hazard:

•Do not attempt to repair this unit. It contains no user-serviceable

parts.

•Do not expose the unit to extremes in temperature or high humidity.

Refer to “Specifications.”

Failure to observe these precautions may result in injury and can

damage the unit.

CM-330

Using the Features

•Data Hold Button Press momentarily to hold the present value on the

display. will appear on the display.

Press again to return to normal mode.

•Max Hold Button Press momentarily to hold the maximum value on the

display. “MAX” will appear on the display. The highest value will remain

on the display, which will update when the meter measures a new

maximum.

Press again to return to normal mode.

Identification

1. Jaw

2. Lever

3. Selector

4. Display

5. Max Hold button

6. Data Hold button

Symbols on the Unit

Warning—Read the instruction manual

Risk of electric shock

Double insulation

Display Icons

7. Data Hold is activated.

8. MAX Max Hold is activated.

9. AC amps

10. Low battery indicator

Operation

1. Set the selector according to the Settings Table. Start with the highest

measurement range.

2. Refer to “Typical Measurements” for specific measurement

instructions.

3. Test the unit on a known functioning circuit or component.

•If the unit does not function as expected on a known functioning

circuit, replace the battery.

•If the unit still does not function as expected, send the unit to

Greenlee for repair. Refer to the instructions under the Warranty.

4. Take the reading from the circuit or component to be tested. If the

resolution is not satisfactory, remove the meter from the circuit and

change to the next lower range.

Electric shock hazard:

Contact with live circuits could result in severe

injury or death.

Settings Table

To measure AC current Set the selector

in this range … to this symbol …

200 A to 400 A 400A

20 A to 200 A 200A

0 A to 20 A 20A

CM-330

Typical Measurements

Clamp Around Line Splitter

Notes:

•The Greenlee 93-30 Line Splitter is

divided. One section renders amps; the

other renders amps multiplied by 10.

•Close the jaw completely to ensure

accurate measurement.

•Center the line splitter in the jaw for

highest accuracy.

Clamp Around Wire

Notes:

•Clamp the jaw around one

conductor only.

•Close the jaw completely to

ensure accurate measurement.

•Center the wire in the jaw for

highest accuracy.

Accuracy

Refer to “Specifications” for operating conditions and temperature

coefficient.

Accuracy is specified as follows: ±(a percentage of the reading + a fixed

amount) at 23 °C ±5 °C (73.4 °F ±9 °F), 0% to 80% relative humidity.

Accuracy Table

Measurement Range Accuracy Frequency Range

19.99 A ±(3.0% + 0.05 A) 50 to 60 Hz

199.9 A ±(2.0% + 0.5 A) 50 to 60 Hz

400 A ±(2.0% + 5 A) 50 to 60 Hz

Specifications

Display: 3-1/2-digit LCD (1999 maximum reading)

Sampling Rate: 2.5 per second

Overrange Indication: “OL” appears on the display

Jaw Opening: 30 mm (1.18")

Maximum Conductor Diameter: 27 mm (1.06")

Measurement Category: Category III, 600 V

Temperature Coefficient: 0.2 x (specified accuracy) per °C

below 18 °C or above 28 °C

Operating Conditions:

0% to 80% Relative Humidity: 0 °C to 30 °C (32 °F to 86 °F)

0% to 75% Relative Humidity: 30 °C to 50 °C (86 °F to 112 °F)

Altitude: 2000 m (6500') maximum

Indoor use only

Storage Conditions: -20 °C to 60 °C (-4 °F to 140°F),

0% to 80% relative humidity

Remove battery

Pollution Degree: 2

Battery: 9-Volt battery (NEDA 1604, JIS 006P or IEC 6LF22)

CM-330

Measurement Categories

These definitions were derived from the international safety standard for

insulation coordination as it applies to measurement, control, and

laboratory equipment. These measurement categories are explained in

more detail by the International Electrotechnical Commission; refer to

either of their publications: IEC 61010-1 or IEC 60664.

Measurement Category I

Signal level. Electronic and telecommunication equipment, or parts thereof.

Some examples include transient-protected electronic circuits inside

photocopiers and modems.

Measurement Category II

Local level. Appliances, portable equipment, and the circuits they are

plugged into. Some examples include light fixtures, televisions, and long

branch circuits.

Measurement Category III

Distribution level. Permanently installed machines and the circuits they are

hard-wired to. Some examples include conveyor systems and the main

circuit breaker panels of a building’s electrical system.

Measurement Category IV

Primary supply level. Overhead lines and other cable systems. Some

examples include cables, meters, transformers, and other exterior

equipment owned by the power utility.

Statement of Conformity

Greenlee Textron Inc. is certified in accordance with ISO 9000 (2000) for

our Quality Management Systems.

The instrument enclosed has been checked and/or calibrated using

equipment that is traceable to the National Institute for Standards and

Technology (NIST).

Maintenance

Electric shock hazard:

•Do not attempt to repair this unit. It contains no user-serviceable

parts.

•Do not expose the unit to extremes in temperature or high humidity.

Refer to “Specifications.”

Failure to observe these precautions may result in injury and can

damage the unit.

Battery Replacement

Electric shock hazard:

•Do not operate with the case or battery door open.

•Before opening the case or battery door, remove the jaw from the

circuit and shut off the unit.

Failure to observe these warnings could result in severe injury or death.

1. Disconnect the unit from the circuit. Turn the unit OFF.

2. Remove the screw from the battery door.

3. Remove the battery door.

4. Replace the battery (observe polarity).

5. Replace the battery door and the screw.

Cleaning

Periodically wipe the case with a damp cloth and mild detergent; do not

use abrasives or solvents.

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