SISCO SISCO-ETCR6920 (01) PDF Document

The SISCO SISCO-ETCR6920 is a Flexible Coil Large Current Clamp Meter designed and manufactured for field testing of AC large current. It utilizes advanced Rogowski Coil technology and can also function as a common multimeter for various electrical tests.

The SISCO SISCO-ETCR6920 is capable of measuring AC large current, AC voltage, DC voltage, resistance, and performing continuity testing.

The device uses a Rogowski Coil, which is a loop coil uniformly wound on non-ferromagnetic materials. This technology allows for non-contact measurement without magnetic saturation, providing high linearity and strong anti-interference ability.

The SISCO SISCO-ETCR6920 has the following measurement specifications:

The SISCO SISCO-ETCR6920 has an inside coil diameter of 200mm.

The meter is powered by 6V DC using four LR03 Alkaline dry cell batteries.

The SISCO SISCO-ETCR6920 has a data storage capacity of 600 groups.

It features a 2.8 inch TFT colorful screen with a display area of 58mm by 44mm.

The SISCO SISCO-ETCR6920 has a sampling rate of 2 times per second.

The meter size is 200mm x 370mm x 35mm. The meter itself weighs 272g, while the total weight including batteries and accessories is 755g.

The working environment should be between -10 degrees Celsius and 40 degrees Celsius with relative humidity below 80 percent. The storage environment should be between -10 degrees Celsius and 60 degrees Celsius with relative humidity below 70 percent.

The meter complies with IEC1010-1, IEC1010-2-032, Pollution 2, CAT VI(1000V), and IEC61326 (EMC standard).

The meter structure includes:

1. Flexible coil CT

2. Lock catch for opening or locking the coil

3. LCD screen

4. Function keys

5. Voltage and current test interface

6. Resistor test interface

7. Communication interface

8. Pen probe test lines

Press the POWER key to start up the meter. The LCD will display and enter measurement mode. Press the POWER key again to shut down the device.

Yes, the meter will automatically shut down after 10 minutes of inactivity to reduce battery consumption.

Press the MODE key to switch between three different measurement modes: Current/AC voltage, Current/DC voltage, and Current/resistor.

1. Start up the meter and enter measurement mode.

2. Rotate the lock catch toward the OPEN direction to unscrew the flexible coil lock catch.

3. Clamp the measured wire with the flexible coil.

4. Rotate the lock catch toward the CLOSE direction to lock the coil.

5. Observe the reading on the display. If “OL” appears, the measured current exceeds the upper limit of the meter.

The tested wire should be in the central position of the flexible coil as much as possible. Avoid placing the wire near the opening and closing point (area C), as the test error increases twice or more in that position. Position error increases by about 1 percent when near the coil edges (point B).

If the measured current is small, you can repeatedly wrap the flexible coil around the wire several times before closing it. The actual current is calculated by dividing the meter’s display value by the number of windings. For example, if you wrap the wire 5 times and the meter shows 50A, the actual current is 10A.

1. Start up the meter.

2. Press the MODE key to switch to AC V (AC voltage mode) or DC V (DC voltage mode).

3. Connect the test lines to the meter and the circuit to display the voltage value.

1. Start up the meter.

2. Press the MODE key to switch to the RES resistance gear.

3. Connect the test lines to the meter and the component being tested to view the resistance value.

1. Start up the meter and press the MODE key to switch to the RES resistance gear.

2. Press the SET key to turn on the continuity testing function. A specific symbol will appear on the screen to indicate it is active.

3. Connect the test lines. If the resistance is smaller than 20 ohms, the buzzer will ring to alert you.

After starting the meter, press the backlight key (marked with an asterisk) to control the display light. The backlight is open by default when the meter is turned on.

Press the HOLD key to freeze the current display data; the “HOLD” symbol will appear on the LCD. Pressing HOLD again cancels the hold. The meter will automatically number and save the held data to its memory.

In measurement mode, press the MEM key to enter query mode; the “READ” symbol will display. Use the HOLD key to increase the query number (e.g., READ:001) and the MEM key to decrease it. Press the MODE key to exit data query mode.

In data query mode, press the SET key to enter the delete option. Press the MODE key to switch the cursor between “YES” and “NO”. Selecting “YES” and pressing the SET key will confirm the deletion and return you to query mode.

1. Install the USB driver and upload software on your computer.

2. Connect the meter to the computer using the provided communication cable.

3. Start the meter and run the software to read, save, report, or print historical data in Txt or Excel formats.

The communication interface and internal circuit are non-isolated. It is strictly forbidden to connect the meter to a computer when testing voltage, as this can burn the meter or cause electric shock. Always pull out the voltage test lines before connecting the data cable to a computer.

When the battery voltage drops to 4.8V, the meter will display a low battery symbol to remind you to replace the batteries.

1. Press the POWER key to shut down the meter and confirm it is off.

2. Open the battery cover and replace the old batteries with four new qualified batteries, paying close attention to polarity.

3. Replace the battery cover and press the POWER key to confirm the meter starts correctly.

The meter must not be used for testing if the battery cover is not properly closed. Always ensure the meter is off before opening the cover and pay strict attention to battery polarity to avoid damaging the unit.

The SISCO SISCO-ETCR6920 cannot be used to measure voltage in a circuit loop exceeding 600V. Doing so presents a danger of electric shock and potential injury.

The clamp head should be cleaned and the meter maintained regularly. If the device will not be used for a long time, the batteries should be removed to prevent damage.

Do not place or store the meter in high temperature, high humidity, or dewy places. Avoid exposing the device to direct sunlight for long periods of time.

If the instrument appears dangerous to continue using, it should be stopped and sealed immediately, then handled by an authorized institution for inspection or repair.

The insulation resistance is 100M ohms or more at 1000V.

The working current is 80mA when the backlight is on and 40mA when the backlight is off.

In the data delete option, the MODE key is used to switch the selection cursor between “YES” and “NO”. The SET key is then used to confirm the choice and return to the query mode.

The included USB communication cable has a length of 1.8 meters.

Yes, the meter automatically detects frequencies of 50Hz or 60Hz.

The SISCO SISCO-ETCR6920 uses an automatic gear shift mechanism.

When a measurement exceeds the range of the device, the LCD will show the “OL” overflow symbol.

The meter performs automatic numbering for each set of data saved during the data hold process.

No, use, disassembly, and maintenance of the leakage current meter must be handled by authorized personnel only.

The test line should be removed from the tested wire first and then pulled out from the meter to avoid electric shock.

When measuring voltage, pay close attention to the connection of the measurement lines to avoid short circuiting the tested circuit.

Yes, the Rogowski Coil technology used in the SISCO SISCO-ETCR6920 is especially suitable for industrial environments with serious signal distortion, such as those with silicon controlled rectifiers or arc welding equipment.

The flexible CT output signal is the differential of current with respect to time. By integrating the output voltage signal, the input current can be truly restored.

If the display is dark, it might indicate that the battery voltage is low. You should replace the batteries in this situation.