1. Introducere
The Greenlee CM-660 is a general-purpose AC True RMS clamp meter designed for accurate electrical measurements. This instrument is capable of measuring AC currents, DC voltages, resistance, and frequency. It incorporates a digital low-pass filter for precise readings on variable frequency drives (VFDs) and features AmpTip™ technology for enhanced accuracy on small wires carrying low currents (60 amps sau mai puțin).
Key features include non-contact AC voltage detection, continuity testing, and diode testing. The meter can record average, maximum, and minimum readings, and offers two voltage detection modes: non-contact or single test lead. It is powered by two 1.5V AAA batteries and comes with test leads and a carrying case for convenience. The CM-660 has a 6000-count LCD display and a 1.18-inch jaw opening. It is UL listed, ensuring compliance with safety standards.

Figure 1.1: Greenlee CM-660 General Purpose AC Clamp Metru.
2. Informații de siguranță
Always adhere to safety precautions when using electrical test equipment. Failure to do so may result in injury or damage to the meter.
- Citiți instrucțiunile: Read and understand all instructions and safety information before operating the meter.
- Personal calificat: This meter should only be used by qualified personnel who are familiar with electrical hazards.
- Echipament individual de protecție (EIP): Always wear appropriate PPE, including safety glasses and insulated gloves, when working with electrical circuits.
- Voltage Limite: Nu depășiți volumul maximtage ratings specified for the meter (600 VAC/DC).
- Limite de curent: Do not exceed the maximum current ratings (600 Amps).
- Inspectați cablurile de testare: Before each use, inspect test leads for damage. Do not use if insulation is cracked or if the conductor is exposed.
- Vol. Fără contacttage Detectare: Use non-contact voltage detection as a preliminary check only. Always verify with direct contact measurements.
- Înlocuire baterie: Ensure the meter is disconnected from all circuits before opening the battery compartment.
- Conditii de mediu: Do not use the meter in wet conditions or in the presence of explosive gases or dust.
- Proper Function: If the meter appears to be damaged or is not operating correctly, discontinue use immediately.
3. Configurare
3.1 Instalarea bateriei
The Greenlee CM-660 requires two 1.5V AAA batteries for operation. These are typically included with the meter.
- Ensure the meter is turned OFF and disconnected from any electrical circuits.
- Localizați capacul compartimentului bateriilor din spatele contorului.
- Folosiți o șurubelniță pentru a slăbi șurubul care fixează capacul bateriei.
- Remove the cover and insert two AAA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Puneți la loc capacul bateriei și strângeți bine șurubul.
3.2 Inspecția inițială
Before first use, and periodically thereafter, perform a visual inspection of the meter and its accessories.
- Check the meter casing for any cracks, damage, or signs of wear.
- Inspect the test leads for frayed insulation, exposed wires, or damaged connectors.
- Ensure the jaw mechanism opens and closes smoothly and securely.
- Verify the display is clear and free from defects when the meter is powered on.

Figure 3.1: Included test leads and carrying case.
4. Instrucțiuni de utilizare
The Greenlee CM-660 offers various measurement functions. Always select the appropriate function before making a measurement.
4.1 metri pesteview

Figure 4.1: Diagram illustrating key features of the Greenlee CM-660 clamp meter, including the clamp jaw, AmpTip, non-contact AC voltagdetecție e, vol. ACtage with digital filter, over-molded grip, and display.
- Clamp Falca: Used for non-contact AC current measurements.
- AmpTip™: Provides increased accuracy for low AC currents (60 amps or less) on small wires.
- Selector de funcții: Selects the desired measurement mode (AC Current, DC Voltage, Resistance, Frequency, Continuity, Diode).
- Afişa: 6000-count LCD for clear reading of measurements.
- Intrări pentru cabluri de testare: Ports for connecting test leads for voltage, resistance, continuity, and diode measurements.
- Non-Contact AC Voltage Detectare: Integrated sensor for detecting live AC voltage fără contact direct.
- Digital Low Pass Filter: Improves accuracy when measuring AC voltage on variable frequency drives.
4.2 Măsurarea curentului alternativ (Clamp)
- Turn the function dial to the AC current (A~) position.
- Deschide clamp maxilarului apăsând maneta.
- Închideți un singur conductor cu clamp jaw. Ensure the jaw is fully closed around the conductor.
- Citiți valoarea curentului alternativ de pe afișaj.
- For small wires carrying 60 amps or less, the AmpTip™ feature automatically provides increased accuracy.

Figure 4.2: The CM-660 clamp contor în uz, măsurând curentul prin clampîn jurul unui singur conductor.
4.3 Măsurarea DC Voltage
- Insert the red test lead into the VΩHz input and the black test lead into the COM input.
- Turn the function dial to the DC voltage (V=) position.
- Connect the red test lead to the positive side of the circuit and the black test lead to the negative side.
- Citiți DC voltage valoarea pe display.
4.4 Măsurarea rezistenței
- Asigurați-vă că circuitul este dezactivat înainte de a măsura rezistența.
- Insert the red test lead into the VΩHz input and the black test lead into the COM input.
- Turn the function dial to the Resistance (Ω) position.
- Conectați sondele de testare la componenta sau circuitul care urmează să fie măsurat.
- Citiți valoarea rezistenței pe afișaj.
4.5 Test de continuitate
- Asigurați-vă că circuitul este dezactivat înainte de a efectua un test de continuitate.
- Insert the red test lead into the VΩHz input and the black test lead into the COM input.
- Turn the function dial to the Continuity (Buzzer symbol) position.
- Conectați sondele de testare la circuit sau la componentă.
- The meter will emit an audible tone if continuity is detected (low resistance).
4.6 Testarea diodei
- Ensure the circuit is de-energized before performing a diode test.
- Insert the red test lead into the VΩHz input and the black test lead into the COM input.
- Turn the function dial to the Diode (Diode symbol) position.
- Conectați sonda roșie la anod și sonda neagră la catodul diodei.
- Afișajul va afișa volumul înaintetagInversați firele; afișajul ar trebui să afișeze „OL” (linie deschisă) pentru o diodă bună.
4.7 Vol. AC fără contacttage Detectare
- Turn the function dial to the NCV (Non-Contact Voltage) poziţia.
- Hold the meter with the NCV sensor near the conductor or outlet.
- Dacă AC voltage is present, the meter will indicate with an audible beep and/or visual indicator.
- AVERTIZARE: This feature is for preliminary detection only. Always verify voltage presence and magnitude with direct contact measurements using test leads.
5. Întreținere
Proper maintenance ensures the longevity and accuracy of your Greenlee CM-660 clamp metru.
5.1 Curățare
- Ștergeți contorul casing cu anunțamp cârpă și detergent blând. Nu utilizați agenți de curățare abrazivi sau solvenți.
- Ensure no moisture enters the meter's openings.
- Clean the test leads regularly, especially the probe tips, to ensure good electrical contact.
5.2 Înlocuirea bateriei
Refer to Section 3.1 for battery installation instructions. Replace batteries promptly when the low battery indicator appears on the display to ensure accurate readings.
5.3 Depozitare
- Depozitați contorul în husa sa de transport atunci când nu îl utilizați pentru a-l proteja de praf și deteriorări.
- Dacă depozitați pentru perioade lungi de timp, scoateți bateriile pentru a preveni scurgerile.
- Store in a cool, dry environment, away from direct sunlight and extreme temperatures.
6. Depanare
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Contorul nu pornește. | Baterii descărcate sau instalate incorect. | Verificați polaritatea bateriilor; înlocuiți bateriile. |
| Se afișează „OL” (Suprasarcină). | Measurement exceeds meter's range. | Ensure the measurement is within the meter's specified range. |
| Citiri inexacte. |
|
|
| Niciun bip de continuitate. |
|
|
7. Specificații
The following table outlines the key specifications for the Greenlee CM-660 General Purpose AC Clamp Metru.
| Caracteristică | Caietul de sarcini |
|---|---|
| Model | CM-660 |
| Tip de măsurare | AC Current, DC Voltage, Resistance, Frequency, Continuity, Diode |
| Gama de curent alternativ | Până la 600 Amps |
| DC Voltage Gama | Până la 600 VDC |
| AC Voltage Gama | Până la 600 VAC |
| Interval de rezistență | Up to 60 kΩ |
| Gama de frecvente | 50/60 Hz (voltage/AmpTip currents), 50-400 Hz (higher currents) |
| Afişa | LCD cu 6000 de puncte |
| Deschiderea maxilarului | 1.18 inchi (30 mm) |
| Sursa de alimentare | 2 baterii AAA de 1.5 V |
| Evaluare de siguranță | UL Listed, CAT IV 300V, CAT III 600V |
| Dimensiuni (L x l x H) | 5.5 x 11.4 x 2.2 inci (aproximativ) |
| Greutatea articolului | 16 uncii (1 lira) |
| Caracteristici speciale | AmpTip™, Digital Low Pass Filter, Non-Contact AC Voltage Detection, Max/Min/Avg Recording, Data Hold, Auto Power Off |

Figure 7.1: Approximate dimensions of the CM-660 clamp meter shown in hand for scale.
8. Garanție și asistență
8.1 Informații despre garanție
Greenlee products are manufactured to high standards and are backed by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions applicable to your CM-660 clamp meter, please refer to the warranty card included with your product or visit the official Greenlee webPăstrați dovada achiziției pentru reclamații în garanție.
8.2 Asistență pentru clienți
For technical assistance, troubleshooting, or service inquiries, please contact Greenlee customer support. Contact information can typically be found on the Greenlee website-ul sau în ambalajul produsului.
Resurse online: For additional product information, FAQs, and support, visit the official Greenlee website: www.greenlee.com
Product Videos and Demonstrations: For product videos and demonstrations, you may visit the link provided in some product documentation: http://tagr.com/t/V3v6VF