SISCO SISCO-ETCR6920B (01) PDF Document

The SISCO SISCO-ETCR6920B Flexible Coil Large Current Clamp Meter is designed and manufactured for field testing of AC large current. It can also be used as a common multimeter to measure AC voltage, DC voltage, resistor, and continuity testing. It is widely used in electric power, communications, meteorology, railway, oil field, construction, measurement, scientific research, teaching units, and industrial and mining enterprises.

To ensure better use of the SISCO SISCO-ETCR6920B, users must adhere to the following:

– Read the instruction manual in detail.

– Comply with safety regulations and cautions listed in the manual.

– Pay special attention to safety under any circumstance when using the meter.

– Keep the clamp jaw clean and maintain it regularly.

– Use, disassembly, and maintenance of the meter must be handled by authorized personnel.

The communication interface and internal circuit of the SISCO SISCO-ETCR6920B are non-isolated. It is strictly forbidden to connect the meter to a computer when testing voltage, as it will burn the meter or cause an electric shock accident. The voltage test line must be pulled out of the meter before connecting the communication data line to a computer to read data.

Do not place or store the SISCO SISCO-ETCR6920B in high temperature and humidity, dewy places, or under direct sunlight for a long time. If the meter will not be used for a long time, please take out the battery.

When the battery voltage is low, please replace the battery in time. Always pay attention to the battery polarity when replacing it. The SISCO SISCO-ETCR6920B will display a low battery symbol when the voltage drops to 4.8V as a reminder.

The SISCO SISCO-ETCR6920B uses several electrical symbols for safety and operation:

The SISCO SISCO-ETCR6920B uses a Rogowski Coil, which is a loop coil uniformly wound on non-ferromagnetic materials. It features no hysteresis effect, almost zero phase error, no magnetic saturation, high linearity, and strong anti-interference ability. The output signal is the differential of the current with respect to time, which is integrated to truly restore the input current.

The specifications for the SISCO SISCO-ETCR6920B model are as follows:

For the SISCO SISCO-ETCR6920B, the measured conductor should be placed in the center of the coil. Positioning the conductor near the opening and closing point can increase the test error by twice or more, while positioning it near the coil edges can increase the error by about 1%.

The SISCO SISCO-ETCR6920B offers the following data and interface features:

– Data Store: 600 groups.

– Communication Interface: USB interface for uploading stored data to a computer for analysis.

– Communication Cable: 1.8 meters in length.

– History Query: Realized through system software to query, save, and print historical data.

The SISCO SISCO-ETCR6920B meter size is 300mm x 470mm x 35mm (Length x Width x Height). The meter weight is 272g, with a total weight of 755g including the battery and accessories.

After powering on the SISCO SISCO-ETCR6920B for about 10 minutes without any operation, the meter will shut down automatically to reduce battery consumption.

The working current of the SISCO SISCO-ETCR6920B depends on the backlight status: with the backlight on, it is 80mA; with the backlight off, it is 40mA.

The environmental specifications for the SISCO SISCO-ETCR6920B are:

– Working Environment: -10 degrees Celsius to 40 degrees Celsius; below 80% Relative Humidity (RH).

– Store Environment: -10 degrees Celsius to 60 degrees Celsius; below 70% Relative Humidity (RH).

The SISCO SISCO-ETCR6920B complies with suitable safety standards including IEC1010-1, IEC1010-2-032, Pollution 2, CAT VI (1000V), and IEC61326 (EMC standard).

The SISCO SISCO-ETCR6920B meter consists of the following components:

1. Flexible coil CT.

2. Lock catch (Turn back and forth according to the arrow to lock or open 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 line.

The keys on the SISCO SISCO-ETCR6920B are used as follows:

Press the POWER key to start up the SISCO SISCO-ETCR6920B; the LCD will display and enter measurement mode. Press the POWER key again to shut down. Note that the meter will automatically shut down after 10 minutes of inactivity to save power.

Press the MODE key on the SISCO SISCO-ETCR6920B to switch between three different measurement modes:

– Current/AC voltage

– Current/DC voltage

– Current/resistor

To measure current using the SISCO SISCO-ETCR6920B, follow these steps:

1. Start up the meter and enter measurement mode.

2. Rotate the lock catch toward the OPEN direction, unscrew the flexible coil lock catch, and clamp the measured wire with the flexible coil.

3. Rotate the lock catch toward the CLOSE direction to lock the flexible coil.

4. Observe the reading on the display. If the meter displays the OL symbol, the measured current exceeds the upper limit range.

Current measurement with the SISCO SISCO-ETCR6920B must be operated by trained and authorized personnel. The operator must follow safety rules to avoid electric shock. The meter cannot be used to measure lines where the voltage exceeds 1000V.

When the measured current is small, the test resolution of the SISCO SISCO-ETCR6920B can be improved by repeatedly wrapping the flexible coil around the measured wire many times before closing it. For example, if a 10A current is wrapped 3 times, the meter will show 30A. The actual current is the display value divided by the number of windings.

To measure voltage with the SISCO SISCO-ETCR6920B:

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 line to the meter and the circuit being tested; the meter will display the voltage value.

4. After the voltage is measured, the test line should be removed from the tested wire first, and then pulled out from the meter.

To measure resistance using the SISCO SISCO-ETCR6920B:

1. Start up the meter.

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

3. Connect the test line to the meter and the component to be measured; the meter will display the resistance value.

To conduct a continuity test with the SISCO SISCO-ETCR6920B:

1. Start up the meter.

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

3. Press the SET key to turn on the continuity testing function (a sound wave symbol will indicate it is on).

4. Connect the test line; if the resistance value is smaller than 20 ohms, the buzzer will ring to alert.

After starting up the SISCO SISCO-ETCR6920B, press the backlight key (sun symbol) to control the light. This is suitable for use in dark sites. The backlight is open by default when the meter is turned on.

Press the HOLD key on the SISCO SISCO-ETCR6920B to hold the current display data; the LCD will display the HOLD symbol. Press the HOLD key again to cancel. The meter automatically numbers and saves the held data. The SISCO SISCO-ETCR6920B can store a maximum of 600 groups of data.

In measurement mode, press the MEM key on the SISCO SISCO-ETCR6920B to enter data query mode; the READ symbol will display. Press the HOLD key to increase the query number or the MEM key to decrease it. Press the MODE key to return to measurement mode.

To delete data on the SISCO SISCO-ETCR6920B:

1. While in data query mode, press the SET key to enter the delete option.

2. Press the MODE key to switch the cursor between YES and NO.

3. Select YES to confirm deletion or NO to return, then press the SET key to confirm your choice.

First, install the USB driver and upload software. Connect the SISCO SISCO-ETCR6920B to the computer using the communication line, start the meter, and run the software. You can read, save, report, or print historical data. Data can be saved as Txt or Excel format. Ensure the meter is not under voltage testing when connecting to the computer.

When replacing the battery in the SISCO SISCO-ETCR6920B, follow these safety guidelines:

– The meter cannot perform tests if the battery cover plate is not covered properly.

– Pay strict attention to battery polarity to avoid damaging the meter.

– Replace batteries immediately when the low battery indicator appears.

– If the meter will not be used for a long time, remove the batteries.

1. Press the POWER key to shut down the SISCO SISCO-ETCR6920B and confirm it is off.

2. Open the battery cover.

3. Replace the old batteries with four qualified new 6V DC LR03 Alkaline dry cells, ensuring correct polarity.

4. Cover the battery plate and press the POWER key to confirm the meter starts up successfully.

The SISCO SISCO-ETCR6920B includes the following accessories:

– Meter (1 PCS)

– Tool bag (1 PCS)

– Probe test line (2 PCS: red and black, 1 each)

– Communication cable (1 PCS)

– Package, Manual, Warranty card, and Certification (1 SET)

When a measurement exceeds the range of the SISCO SISCO-ETCR6920B, the meter will display the OL symbol to indicate an overflow condition.

The SISCO SISCO-ETCR6920B has a sampling rate of 2 times per second.

The SISCO SISCO-ETCR6920B features a 2.8 inch TFT colorful screen with a display area measuring 58mm x 44mm.

Yes, the SISCO SISCO-ETCR6920B features automatic gear shifting for measurements.

The SISCO SISCO-ETCR6920B automatically detects and works with frequencies of 50Hz and 60Hz.

If the LCD display is dark after starting up the SISCO SISCO-ETCR6920B, it might be an indication that the battery voltage is low. You should replace the batteries immediately.

The SISCO SISCO-ETCR6920B cannot be used to measure any circuit loop with a voltage exceeding 600V; otherwise, there is a danger of electric shock or injury.

After performing a test with the SISCO SISCO-ETCR6920B, you should clean the clamp head and maintain the meter regularly to ensure continued accuracy and safety.

The insulation resistance of the SISCO SISCO-ETCR6920B is 100M ohms or more at 1000V.

Yes, the SISCO SISCO-ETCR6920B can realize historical data reading, query, save, and print functions through its USB communication interface and system software.

Yes, users can customize the coil length of the SISCO SISCO-ETCR6920B according to their specific demands.

Yes, the SISCO SISCO-ETCR6920B is small, lightweight, soft, and flexible, making it suitable for narrow environments and places with high flat cable density.

No, because the Rogowski Coil in the SISCO SISCO-ETCR6920B is wound on non-ferromagnetic materials, it has no magnetic saturation and high linearity.

The SISCO SISCO-ETCR6920B will display the OL symbol on the LCD to indicate that the measured current has exceeded its measurement range.

Yes, the SISCO SISCO-ETCR6920B is capable of measuring DC voltage within the range of 0.0V to 1000V DC.

The SISCO SISCO-ETCR6920B features a wide response frequency band suitable for various industrial environments, including those with serious signal distortion.

Yes, the SISCO SISCO-ETCR6920B uses a flexible coil without any exposed metal conductor for safe and reliable non-contact measurement.

If for any reason the SISCO SISCO-ETCR6920B instrument is dangerous to continue using, it should be stopped and sealed immediately, and then handled by an authorized institution.