Transformer core grounding current tester function use

Product introduction:
The normal operation of the transformer core is grounded at a single point. If there are two or more points at the same time, the current loop will be formed between the core and the earth. The maximum current can reach several tens of amperes, which will cause the core to overheat. Even burned. The transformer core grounding current tester can quickly find the fault of the transformer's latent fault, which is the main tool to ensure the safe operation and normal maintenance of the transformer. It is mainly used for leakage current testing of iron cores and clamps of electrical equipment such as transformers and reactors in substations and power plants. It can also be used for current and leakage current testing of lines or equipment in electric power, communication, meteorology, railway, oil field, construction, measurement, scientific research and teaching units, industrial and mining enterprises.
The transformer core grounding current tester host adopts high-speed microprocessor, which can display the magnitude and waveform of the measured current in real time. The FFT transform and digital filtering technology are used to make the test data more accurate. It has alarm threshold setting and alarm indication function. With date and time setting function; with automatic shutdown or no automatic shutdown setting function; with the function of setting the tested point number; can store 100 sets of data and waveform.
Product nickname:
Transformer core grounding current tester
Features:
1, the current clamp uses a special alloy
2. Adopting the latest magnetic shielding technology, the external magnetic field has little influence and strong anti-interference ability, ensuring high precision, high stability and high reliability of uninterrupted measurement throughout the year. 3, the inner diameter of the jaw is 80mm × 80mm, can clamp the cable or ground wire below φ80mm, or clamp 96mm × 4mm flat steel ground wire, portable clamp design, do not need to disconnect the line under test, non-contact measurement, safe and fast.
Technical Parameters:

Features

Transformer core grounding current test; AC leakage current, current online test

power supply

DC6V alkaline dry battery LR6 1.5V×4

test method

Clamp CT

Jaw size

80mm × 80mm (can clamp φ80mm wire, or 96mm × 4mm flat steel ground wire)

Measure

AC 0.00mA~30.0A

Resolution

AC 0.01mA

Accuracy

±1.5%±3dgt

Display mode

LCD: 128dots × 64dots

Host size

170mm × 75mm × 30mm

Current clamp size

194mm × 145mm × 40mm

Quality

Host: 240g (with battery); current clamp: 780g

LCD size

Display field: 44mm × 27mm

Electric field interference

When the external electric field 100A is close to 10mm, about 10mA

Sampling rate

3 times / sec

data storage

100 groups (data will not be lost if power is lost or replaced)

Waveform indication

Have

Automatic shut-down

The meter has 5 minutes of automatic shutdown and long-term work without shutdown selection function, the default is automatic shutdown mode.

Alarm Settings

Alarm threshold setting range: 10mA~30.0A

Alarm indication

When the test value exceeds the alarm threshold, the test data flashes

Line voltage

AC 1000V line test

Overflow display

Overrange overflow function: " OL " symbol display

battery voltage

When the battery voltage drops to 4.8V ± 0.1V, the battery voltage is low, indicating that the battery is replaced, and the measured data is also accurate.

Rated current

5mA in power saving mode, up to 20mA

Lead length

Current clamp lead length is 2 meters (can be customized and lengthened)

Working temperature and humidity

-10 ° C ~ 40 ° C; below 80% rh

Storage temperature and humidity

-10 ° C ~ 60 ° C; 70% rh below

Insulation resistance

100MΩ or more, 1000V

Suitable for safety regulations

IEC1010-1, IEC1010-2-032, pollution degree 2, CAT VI (1000V) IEC61326 (EMC standard)

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