1. Uvod
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 ili manje).
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 Metar.
2. Sigurnosne informacije
Always adhere to safety precautions when using electrical test equipment. Failure to do so may result in injury or damage to the meter.
- Pročitajte uputstva: Read and understand all instructions and safety information before operating the meter.
- Kvalificirano osoblje: This meter should only be used by qualified personnel who are familiar with electrical hazards.
- Lična zaštitna oprema (PPE): Uvijek nosite odgovarajuću ličnu zaštitnu opremu, uključujući zaštitne naočale i izolirane rukavice, prilikom rada s električnim krugovima.
- Voltage Ograničenja: Ne prekoračite maksimalni voltage ratings specified for the meter (600 VAC/DC).
- Trenutna ograničenja: Do not exceed the maximum current ratings (600 Amps).
- Pregledajte mjerne kablove: Before each use, inspect test leads for damage. Do not use if insulation is cracked or if the conductor is exposed.
- Non-Contact Voltage Detekcija: Use non-contact voltage detection as a preliminary check only. Always verify with direct contact measurements.
- Zamjena baterije: Ensure the meter is disconnected from all circuits before opening the battery compartment.
- Uslovi okoline: 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. Podešavanje
3.1 Instalacija baterije
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.
- Pronađite poklopac odjeljka za baterije na stražnjoj strani mjerača.
- Koristite odvijač da biste odvrnuli vijak koji pričvršćuje poklopac baterije.
- Remove the cover and insert two AAA batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Vratite poklopac baterije i čvrsto pritegnite zavrtanj.
3.2 Početni pregled
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. Uputstvo za upotrebu
The Greenlee CM-660 offers various measurement functions. Always select the appropriate function before making a measurement.
4.1 metar prekoview

Figure 4.1: Diagram illustrating key features of the Greenlee CM-660 clamp meter, including the clamp jaw, AmpTip, non-contact AC voltagdetekcija e, AC volumentage with digital filter, over-molded grip, and display.
- Clamp vilica: Used for non-contact AC current measurements.
- AmpTip™: Provides increased accuracy for low AC currents (60 amps or less) on small wires.
- Funkcijski kotačić: Selects the desired measurement mode (AC Current, DC Voltage, Resistance, Frequency, Continuity, Diode).
- Prikaz: 6000-count LCD for clear reading of measurements.
- Test Lead Inputs: Ports for connecting test leads for voltage, otpor, kontinuitet i mjerenja dioda.
- Non-Contact AC Voltage Detekcija: Integrated sensor for detecting live AC voltage bez direktnog kontakta.
- Digital Low Pass Filter: Improves accuracy when measuring AC voltage on variable frequency drives.
4.2 Measuring AC Current (Clamp)
- Turn the function dial to the AC current (A~) position.
- Otvorite clamp čeljust pritiskom na polugu.
- Ogradite jedan provodnik sa clamp jaw. Ensure the jaw is fully closed around the conductor.
- Očitajte vrijednost naizmjenične struje na displeju.
- For small wires carrying 60 amps or less, the AmpTip™ feature automatically provides increased accuracy.

Figure 4.2: The CM-660 clamp meter in use, measuring current by clampoko jednog provodnika.
4.3 Mjerenje 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.
- Spojite crveni mjerni kabel na pozitivni pol strujnog kola, a crni mjerni kabel na negativni pol.
- Pročitajte DC voltage vrijednost na ekranu.
4.4 Mjerenje otpora
- Prije mjerenja otpora provjerite je li strujno kolo bez napona.
- Insert the red test lead into the VΩHz input and the black test lead into the COM input.
- Okrenite funkcijski birač u položaj Otpor (Ω).
- Spojite mjerne kablove preko komponente ili strujnog kola koje se mjeri.
- Očitajte vrijednost otpora na zaslonu.
4.5 Test kontinuiteta
- Prije izvođenja testa kontinuiteta provjerite je li strujni krug bez napona.
- 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.
- Spojite mjerne kabele preko strujnog kola ili komponente.
- The meter will emit an audible tone if continuity is detected (low resistance).
4.6 Ispitivanje diode
- Prije izvođenja testa diode, provjerite je li strujno kolo bez napona.
- 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.
- Spojite crveni mjerni kabel na anodu, a crni mjerni kabel na katodu diode.
- Na ekranu će se prikazati jačina zvuka naprijedtagPad e. Zamijenite mjesta vodova; na ekranu bi trebalo biti prikazano "OL" (Otvorena linija) za ispravnu diodu.
4.7 Beskontaktni AC Voltage Detekcija
- Turn the function dial to the NCV (Non-Contact Voltage) položaj.
- Hold the meter with the NCV sensor near the conductor or outlet.
- Ako je AC voltage is present, the meter will indicate with an audible beep and/or visual indicator.
- UPOZORENJE: This feature is for preliminary detection only. Always verify voltage presence and magnitude with direct contact measurements using test leads.
5. Održavanje
Proper maintenance ensures the longevity and accuracy of your Greenlee CM-660 clamp metar.
5.1 Čišćenje
- Obrišite mjerač casing s oglasomamp krpom i blagim deterdžentom. Nemojte koristiti abrazivna sredstva za čišćenje ili rastvarače.
- Ensure no moisture enters the meter's openings.
- Clean the test leads regularly, especially the probe tips, to ensure good electrical contact.
5.2 Zamjena baterije
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 Skladištenje
- Store the meter in its carrying case when not in use to protect it from dust and physical damage.
- U slučaju dužeg skladištenja, izvadite baterije kako biste spriječili curenje.
- Store in a cool, dry environment, away from direct sunlight and extreme temperatures.
6. Otkrivanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Mjerač se ne uključuje. | Prazne ili nepravilno instalirane baterije. | Provjerite polaritet baterija; zamijenite baterije. |
| Prikazuje se "OL" (preopterećenje). | Mjerenje prelazi raspon mjerača. | Ensure the measurement is within the meter's specified range. |
| Netačna očitavanja. |
|
|
| Nema zvučnog signala za kontinuitet. |
|
|
7. Specifikacije
The following table outlines the key specifications for the Greenlee CM-660 General Purpose AC Clamp Metar.
| Feature | Specifikacija |
|---|---|
| Model | CM-660 |
| Measurement Type | AC Current, DC Voltage, Resistance, Frequency, Continuity, Diode |
| Raspon izmjenične struje | Do 600 Amps |
| DC Voltage domet | Do 600 VDC |
| AC Voltage domet | Do 600 VAC |
| Opseg otpora | Up to 60 kΩ |
| Frekvencijski opseg | 50/60 Hz (voltage/AmpTip currents), 50-400 Hz (higher currents) |
| Display | 6000 Count LCD |
| Otvaranje vilice | 1.18 inča (30 mm) |
| Izvor napajanja | 2 x 1.5V AAA baterije |
| Safety Rating | UL Listed, CAT IV 300V, CAT III 600V |
| Dimenzije (D x Š x V) | 5.5 x 11.4 x 2.2 inča (približno) |
| Težina artikla | 16 unci (1 funta) |
| Posebne karakteristike | 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. Jamstvo i podrška
8.1 Informacije o garanciji
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 webSačuvajte dokaz o kupovini za slučaj reklamacije.
8.2 Korisnička podrška
For technical assistance, troubleshooting, or service inquiries, please contact Greenlee customer support. Contact information can typically be found on the Greenlee websajtu ili u pakovanju proizvoda.
Online resursi: For additional product information, FAQs, and support, visit the official Greenlee webstranica: 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





