Greenlee CM-300 Manual de usuario

INSTRUCTION MANUAL

MANUAL DE INSTRUCCIONES

MANUEL D’INSTRUCTIONS

CM-300 • CM-310

CLAMP-ON AMMETERS

AMPERÍMETROS

CON PINZA

PINCES

AMPEREMETRIQUES

OFF 20A 200A 300A

AC Clamp Meter

Toggle

button

- Activate DH

- Activate PH

- Re-set

DH=Data hold

•

PH-Peak hold

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 estas

herramientas o darles 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-300 and CM-310 Clamp-on Ammeters are hand-held test instruments

capable of measuring up to 300 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

This instruction manual is intended to familiarize all personnel with the safe operation and

maintenance procedures for the Greenlee CM-300 and CM-310 Clamp-on Ammeters.

Keep this manual available to all personnel.

Replacement manuals are available upon request at no charge.

and are registered trademarks of Greenlee Textron.

KEEP THIS MANUAL

CM-300 • CM-310

Important Safety Information

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.

Read and understand this material before operating or servicing

this equipment. Failure to understand how to safely operate this

tool can result in an accident causing serious injury or death.

Important Safety Information

• Do not operate with the case open.

• Before opening the case, remove the jaw from the circuit and shut off the unit.

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

• 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.

See Specifications.

Failure to observe these precautions can result in injury and can damage the unit.

Using this unit near equipment that generates electromagnetic interference can result

in unstable or inaccurate readings.

Electric shock hazard:

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

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

Electric shock hazard:

Contact with live circuits can result in severe injury or death.

CM-300 • CM-310

Identification

1. Jaw

2. Lever

3. Toggle Button (CM-310 only)

4. Display

5. Selector

OFF 20A 200A 300A

AC Clamp Meter

Toggle

button

- Activate DH

- Activate PH

- Re-set

DH=Data hold •PH-Peak hold

Operation

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

range.

Settings Table

2. See Typical Measurements for illustrations of typical uses.

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, return the unit to Greenlee for repair.

4. Take the reading from the circuit to be tested. If the resolution is not satisfactory, remove

the meter from the circuit and change to the next lower range.

Notes (CM-310 Only):

• Press the Toggle button once for Data Hold. Hwill appear on the display. The present value

will remain on the display.

• Press the Toggle button again for Peak Hold. PH will appear on the display. The highest

value will remain on the display; the display will update when the meter measures a new

peak.

• Press the Toggle button again to return to normal mode.

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Electric shock hazard:

Contact with live circuits can result in severe injury or death.

CM-300 • CM-310

Typical Measurements

Clamp Around Line Splitter

Clamp Around Wire

OFF 20A 200A 300A

AC Clamp Meter

Toggle

button

- Activate DH

- Activate PH

- Re-set

DH=Data hold

•

PH-Peak hold

OFF 20A 200A 300A

AC Clamp Meter

Toggle

button

- Activate DH

- Activate PH

- Re-set

DH=Data hold

•

PH-Peak hold

Notes:

• Clamp the jaw around one conductor only.

• Close the jaw completely.

• Center the wire in the jaw for highest accuracy.

Notes:

• The Greenlee 93-30 Line Splitter is divided. One

section renders amps; the other renders amps

multiplied by 10.

• Close the jaw completely.

• Center the line splitter in the jaw for highest

accuracy.

Accuracy

See the Specifications section for operating conditions.

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

Specifications

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

Sampling Rate: 3 per second

Overrange Indication: “1” appears on the display

Jaw Opening: 28 mm (1.10")

Low Battery Indication:

Overvoltage Category: Category III, 600 Volts

Protection Class: IP40

Operating Conditions: 0 °C to 40 °C (32 °F to 104 °F) , 0% to 80% relative humidity

Elevation: 2000 m (6500') maximum

Storage Conditions: –10 °C to 50 °C (14 °F to 122 °F), 0% to 80% relative humidity.

Remove battery.

Pollution Degree: 2

Battery: 9-Volt battery (NEDA 1604, JIS 006P or IEC 6F22)

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A003)spmA3+%0.2(±

CM-300 • CM-310

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

2. Remove the screws from the back cover.

3. Remove the back cover.

4. Replace the battery (observe polarity).

5. Replace the cover and screws.

Before opening the case, remove the jaw from the circuit and shut off the unit.

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

Battery Replacement

Greenlee Textron / Subsidiary of Textron Inc. 4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070

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