Product introduction:
The GH-6303 high-voltage digital megohm meter is suitable for the electric power industry, the post and telecommunications department, and the industrial and mining enterprises that use electricity as an industrial power to measure the insulation resistance of various transformers, motors, cables, electrical equipment and insulating materials. It is a common instrument for maintenance, repair, testing and verification of various electrical equipment.
GH-6303 high-voltage digital megohmmeter (high-voltage megohmmeter) working principle: high-voltage digital megohmmeter adopts medium-large scale integrated circuit, DC voltage generated by DC/AC conversion from internal battery is from E to L pole The current is calculated by the 1/V conversion through the divider, and the measured insulation resistance value is directly displayed by the LCD. The high-voltage digital megohm case is made of high-strength aluminum alloy. The machine is equipped with an equipotential protection ring and a fourth-order active device. The low-pass filter can effectively shield the external power frequency and strong electromagnetic field. For capacitive test measurements, since the output short-circuit current is greater than 1.6 mA, it is easy to quickly increase the test voltage to the rated value of the output voltage. For low-resistance measurements, the voltage drop does not affect the test accuracy due to the proportional method design. High-voltage digital megohmmeter operating parts function:
1. “L†is the high-voltage output terminal, called the line end, which is led by the high-voltage cable to the line under test, for example, to the motor winding and the cable core.
2. "G" is called the protective end and is used for measuring the volume resistance of the insulating material or cable by the three-electrode method. It is connected to the protective ring end of the three electrodes.
3. “E†is called the grounding terminal and is connected to the ground and zero end of the measured object. For example, the motor casing metal, the transformer core, the cable shielding layer, the safe grounding of the instrument, and the ground end of the manual discharge.
4. The “high voltage control button†is used to control the test voltage, and the high voltage is output from the “L†terminal when pressed.
5. “High pressure preselection knob switch†is used to preselect the test voltage value.
6. The “high pressure adjustment knob†is a multi-turn potentiometer knob. The test voltage can be adjusted from 0V and smoothly adjusted to the preselected value.
7. The “resistance range switch knob†points to the maximum resistance range, which is the upper limit.
8. "Working power switch" is the power supply switch of the instrument.
9. “Floating power supply socketâ€, when the instrument power is insufficient, the socket with AC 220V power supply, when the indicator above the socket changes from orange to green, it means the charging is completed.
10. The “kV†table displays the voltage value between L and E. When the “â†â€ symbol appears on the meter, the battery is insufficiently charged and should be charged in time.
11. “MΩ/GΩ meterâ€, showing the insulation resistance value, the unit of which is determined by the resistance range switch.
12. The digital stopwatch displays the test time minutes and seconds. The high pressure control button is pressed to start timing, the maximum value is 19 minutes and 59 seconds, and then the cycle works.
Product nickname:
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The high-voltage digital megohmmeter can output four grade voltages: 500V, 1000V, 2000V, 2500V, which is equivalent to four hand-operated pointer meggers;
1. Large output power, strong load capacity, good anti-interference performance, no need for manpower to do work;
2. The range can be automatically converted, and the touch panel operation at a glance makes the measurement more convenient and quick, and the power supply can be used for both AC and DC;
3. The high-voltage digital megohmmeter measurement result is displayed by LCD digital display, and the reading is intuitive, which clears the visual error of the pointer meter;
4. One minute after the meter turns on the high pressure button, it will automatically alarm and lock the indication value for 5 seconds to calculate the absorption ratio (R60 sec / R15 sec);
5. Not afraid of short circuit, the output short-circuit current is greater than 1.6mA, which can be directly measured without the need for load measurement estimation.
Technical Parameters:
1, the output voltage level is 100V, 250V, 500V, 1000V
2, measurement range: 0~1999MΩ
3. Relative error ≤±2.0%±1d
4, resolution 0.001MΩ, 0.01MΩ 0.1MΩ, 1.0MΩ
5, power supply range, power loss DC: 7 ~ 9V (6 5# cadmium nickel rechargeable battery) external AC 220V power supply.
Power consumption: static power consumption ≤160mW; maximum power ≤2.5W
6, humidity: ≤ 85% RH
7, temperature: 0 ° C -40 ° C
Pressure Gauge
The utility model provides a novel shock-resistant and extrusion-resistant marine pressure gauge. The novel seismic-resistant and extrusion-resistant marine pressure gauge comprises a pressure gauge body and a protective cover, and both sides of the bottom of the pressure gauge body are fixedly connected with installation One side of the mounting plate is provided with a mounting slot, the bottom of the mounting plate is fixedly connected with a box body, one side of the inside of the box body is provided with a drive motor, and one end of the output shaft of the drive motor is fixedly connected with a A turntable, one side of the turntable is fixedly connected with a sliding member, a sliding plate is slidably connected between two sides inside the box body, and a sliding groove is formed on the sliding plate. The novel shock-resistant and extrusion-resistant provided by the utility model This type of marine pressure gauge protects the pressure gauge by setting a protective cover on the pressure gauge to avoid being squeezed or impacted by the outside world during use, causing damage to the pressure gauge, thereby improving the anti-seismic and extrusion resistance of the pressure gauge. Ability.
Pressure Gauge,Water Pressure Gauge,Digital Air Pressure Gauge,Hydraulic Pressure Gauge
Taizhou Jiabo Instrument Technology Co., Ltd. , https://www.taizhoujiabo.com