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Product introduction
TesterMeter-ETCR9570 multifunctional high and low voltage CT transformation ratio tester is a power testing product carefully designed by our company. It is mainly used for online measurement of primary current, secondary current, transformation ratio, ratio difference, Angle difference, phase/polarity judgment. This instrument can also measure power parameters such as voltage, current, leakage current, phase, frequency, active power, reactive power, power factor, and harmonics of the power system. It can also display voltage and current waveforms. The harmonics of AC signals contain rate and waveform distortion rate. This instrument is composed of handheld terminal, small current clamp, flexible current clamp, high voltage current clamp, test line, high voltage insulation rod, PC software and so on. The handheld terminal adopts a 5-inch touch color screen, all test results are displayed on the same screen, and the operation is convenient. It has a USB interface to upload the test records to the computer. It has a Bluetooth communication function, and the measurement results can be viewed on the mobile phone. The primary current is measured with flexible current clamps or high-voltage current clamps, and the secondary current is measured with high-precision small current clamps. Flexible current clamps are especially suitable for low-voltage busbars and other places where large current clamps are inconvenient to clamp. High-voltage current clamps can be connected to insulating rods for current measurement of high-voltage lines below 60kV. High-voltage current clamps have a unique automatic plug-in structure. By pressing or withdrawing the insulating rods, it is convenient to clamp or evacuate the tested wires to ensure the safety of operators. . The instrument has two measurement modes, wired or wireless, which can be used in various test sites, and the transmission distance of the wireless test mode is up to 40 meters. TesterMeter-ETCR9570 multifunctional high and low voltage CT transformation ratio tester can not only be used for transformation ratio measurement, phase measurement and power measurement, but also can be used as clamp ammeter, clamp power meter, high voltage clamp ammeter, and can be widely used in substations. Power plants, power inspection departments, industrial and mining enterprises, inspection stations, and electrical maintenance departments conduct current detection, anti-stealing electricity, and field electrical work. |
Features
1. The instrument consists of a handheld host, small current clamps, flexible current clamps, high-voltage current clamps, insulating rods, voltage test lines, etc. 2. The host adopts 5-inch touch color screen, Chinese interface, easy to operate, and the measurement parameters are displayed on the same screen. 3. The flexible current clamp, high-voltage current clamp and the host adopt two measurement modes of wireless communication and wired connection. 4. Real-time display of the histogram of harmonic components, voltage and current waveforms, and distortion rates. 5. With GPS positioning function. 6. With USB interface and host computer software, the test results can be uploaded to the computer for data analysis and historical record query. 7. With bluetooth function, install the APP to test and view the test results on the mobile terminal |
Technical parameter
1. Benchmark conditions
Amount of influence | Baseline conditions | working conditions | Remark | |
ambient temperature | 23℃±5℃ | -15℃～50℃ | ||
environment humidity | 40%～60% | ＜80% | ||
Sine wave distortion | ≤1% | ≤3% | ||
signal frequency | 50Hz±5Hz | 45Hz～65Hz | ||
Instrument working voltage | 7.4V±0.5V | 7.4V±1V | ||
Angle difference test | voltage amplitude | 100±25V | 0V～600V | |
Small current clamp I1 current amplitude | 5A±0.2A | 0mA～10A | ||
Flexible Current Clamp I2 Current Amplitude | 1000A±30A | 0.0A～3000A | ||
High Voltage Current Clamp I3 Current Amplitude | 300A±3A | 0.0A～600A | ||
External electric field, magnetic field | should be avoided | |||
Tested wire position | The tested wire is in the center of the jaws | |||
2. Basic errors and performance indicators under benchmark conditions
Measurement parameters | Measuring range | resolution | tolerance scope |
Voltage | 0V～20V | 0.001V | ±0.3%FS |
20V～200V | |||
200V～600V | |||
Small Current Clamp I1 | 0A～2A | 0.1mA | ±0.3% of reading ±0.2%FS |
2A～10A | |||
Flexible Current Clamp I2 | 0A～30A | 0.01A | ±0.5% of reading ±0.5%FS |
30A～300A | |||
300A～3000A | |||
High Voltage Current Clamp I3 | 0A～200A | 0.001A | ±0.3% of reading ±0.2%FS |
200A～600A | |||
frequency | 45Hz～65Hz | 0.0001Hz | ±0.05Hz |
phase | 0～360° | 0.1° | ±3° |
Ratio | 1～9999 | 1 | ---- |
power factor | -1.0000～1.0000 | 0.0001 | ---- |
active power | 0W～1kW | 0.1mW | ±0.3%FS |
1kW～1800kW | 0.1W | ||
reactive power | 0Var～1kVar | 0.1 mVar | ±0.3%FS |
1kVar～1800kVar | 0.1Var | ||
harmonic | 2~31 times |
Note: The measurement error under working conditions is not more than twice the reference condition
3. Technical parameters
Host power | DC 7.4V 5200mAh rechargeable lithium battery |
Current clamp power supply | DC 7.4V 600mAh rechargeable lithium battery |
display mode | 5 inch touch color screen |
Handheld Terminal Size | 210mm×129mm×68mm |
Small Current Clamp Size | Jaw size: Φ8mm; Overall size: 137mm×40mm×19.5mm |
Flexible Current Clamp Dimensions | Jaw size: Φ200mm; Overall size: 200mm×245mm×13mm |
High Voltage Current Clamp Dimensions | Jaw size: Φ48mm; Overall size: 255mm×84mm×39mm; |
wireless communication | Between host and current clamp: 433 communication |
Host positioning: GPS communication | |
Wireless transmission distance of current clamp | Wireless transmission distance 40m (in open environment) |
Current Clamp Lead Length | about 5 meters |
Instrument quality | About 7.5kg (including tool bag and insulation rod) |
shift gear | fully automatic shift |
data storage | 2000 groups, press the SAVE button to automatically number and store (the data will not be lost when the power is turned off or the battery is replaced) |
data review | Have |
Automatic shut-down | About 15 minutes after starting up, the meter will automatically shut down |
data upload | Equipped with USB interface and host computer software, the test results can be uploaded to the computer for data analysis and historical record query |
bluetooth function | Yes, it supports the Android system. After installing the APP, you can perform test operations and view test results on the mobile terminal. |
battery voltage | The host battery power display, when the battery voltage is lower than 10%, it will remind you to charge in time; when the battery voltage of the flexible current clamp and high voltage current clamp is lower than 10%, the indicator light is on |
External interference | Avoid extremely strong electromagnetic fields; avoid 433MHz, 315MHz co-frequency interference |
Working temperature and humidity | -15℃～50℃; below 80%Rh |
storage temperature and humidity | -10℃～60℃; below 70%Rh |
Insulation rod size | Φ32mm, 1m/section, 5 sections |
insulation rod withstand voltage | 110kV |
Dielectric strength | Host and detector: AC1000V/rms (between shell and screw) |