CM86C

Q: What's the difference between a clamp meter and a multimeter?

A clamp meter is specialized for current measurement through its jaws, especially high amperage. A multimeter offers broader functions like voltage, resistance, and continuity testing, but typically measures current via test leads.For a more detailed comparison, please refer to the blog:clamp electric meter vs multimeter.

Q: Can a clamp meter measure both AC and DC current?

Yes, many modern clamp meters can measure both AC and DC current. Be sure to check if the model specifically supports DC current, as not all do.

Q: How do I measure current with a clamp meter?

To measure current, first set your clamp meter to the correct current mode—AC or DC. Then open the clamp jaws and place them around a single live conductor, not the entire cable, as clamping around both live and neutral wires will cancel out the current reading. Make sure the wire is centered in the clamp for better accuracy. Once clamped, the current value will appear on the display. For DC current measurements, some models require you to zero the meter before use to ensure accuracy.

Photovoltaic systems with 1000V PV voltage testing

MESTEK CM86C Solar Clamp Meter is designed for professional photovoltaic (PV) system installation and maintenance. It supports up to 1000V AC/DC photovoltaic voltage measurement, making it ideal for testing solar panels, inverters, combiner boxes, and electrical systems. With True RMS technology, 1000A AC/DC current measurement, and 2000KVA power measurement, it delivers reliable results even in complex electrical environments. The optional 3000A iFlex flexible clamp allows convenient current measurement on large conductors and hard-to-reach cables. Additional features, including inrush current, NCV detection, resistance, capacitance, and K-type temperature measurement, make the CM86C a versatile tool for solar technicians and professional electricians.

Functions

Photovoltaic AC voltage	1000V
Photovoltaic DC voltage	1000V
Power	2000KVA
DC Voltage	600mV/6V/60V/600V/1000V
AC Voltage	6V/60V/600V/750V
DC Current	60A/600A/1000A
AC Current	60A/600A/1000A
iFlex flexible clamp	3000A(Optional)
Inrush Current	1000A
Resistance	600/6kΩ/60kΩ/600kΩ/6MΩ/60MΩ
Capacitance	600nF/6μF/60μF/600μF/6mF/60mF
K-type Temperature	-20°C-1000°C1-4“F-1832°F
Continuity Buzzer	<30Ω
Jaw Opening	42mm
True-RMS	√
Data Hold	√
Backlight	√
Flashlight	√
K-type Temperature	√
Auto Power off	√
NCV	√
Input Impedance	1MΩ
Low Battery Indication	Lower than 2.4V
Batteries	3*1.5V AAA
Size	2549245(mm)
Weight	About 620g
Safety Level	EN61010-2-032,CAT Ⅲ 1000V
Standard Accessories	Digital Clamp Meter-Probe-Carrying
Standard Accessories	Bag-Batteries-User Manual-Color Box

Factory Showcase

Mestek achieves high standards and high consistency in product inspection and calibration through precise machinery and a clean environment.

FREQUENTLY ASKED QUESTIONS

What's the difference between a clamp meter and a multimeter?

A clamp meter is specialized for current measurement through its jaws, especially high amperage. A multimeter offers broader functions like voltage, resistance, and continuity testing, but typically measures current via test leads.For a more detailed comparison, please refer to the blog:clamp electric meter vs multimeter.

Can a clamp meter measure both AC and DC current?

Yes, many modern clamp meters can measure both AC and DC current. Be sure to check if the model specifically supports DC current, as not all do.

How do I measure current with a clamp meter?

To measure current, first set your clamp meter to the correct current mode—AC or DC. Then open the clamp jaws and place them around a single live conductor, not the entire cable, as clamping around both live and neutral wires will cancel out the current reading. Make sure the wire is centered in the clamp for better accuracy. Once clamped, the current value will appear on the display. For DC current measurements, some models require you to zero the meter before use to ensure accuracy.

What is the maximum current a clamp meter can measure?

It depends on the model. Entry-level clamp meters typically measure up to 400A–600A, while industrial models can go up to 1000A or more.

What is non-contact voltage (NCV) detection in a clamp meter?

NCV detection is a safety feature that lets you detect the presence of AC voltage without physically touching a wire. The clamp meter senses the electromagnetic field emitted by a live wire and alerts you with a visual or audible signal. It’s a fast and convenient way to identify live wires or check for voltage in outlets, switches, and breaker panels. However, NCV only indicates the presence of voltage—it doesn’t tell you the exact voltage level, so it should be used as a preliminary safety check rather than a precise measurement.

How accurate is a clamp meter?

Clamp meter accuracy varies by model and technology. Most standard models offer ±2% to ±3% accuracy, while high-end True RMS meters can reach ±1%. Accuracy may be affected by wire position, interference, or temperature. For best results, follow the manufacturer’s usage and calibration guidelines.