1. Instrument working principle

This product is composed of medium and large scale integrated circuits. This table has high output power, high short circuit current value and many output voltage levels (four voltage levels). The principle of operation is that the DC high voltage generated by DC/DC converter using in-machine batteries as power source goes from E pole to L pole through the tested product, thus generating a current from E to L pole. The measured insulation resistance value is displayed directly by LCD through I/V conversion and division operation.

2. Instrument usage range

This instrument is indispensable for the installation and maintenance of electric power, post and telecommunications, telecommunications, electromechanical equipment, and the use of electric power as industrial power or energy in industrial enterprises. It is suitable for measuring the resistance value of various insulation materials and the insulation resistance of transformers, motors, cables and electrical equipment.

1. Conditions of Use

Ambient temperature: relative humidity from 0 +45: <85% RH

2. Output Voltage Level, Measurement Range, Resolution, Error

Output Voltage Level: 500V, 1000V, 2500V, 5000V

Measurement range: 0-19990M

Resolution: 0.01M, 0.1M, 1.0M, 10.0M

Relative error: 0-2000M < 5%+2d.

2000M~19990M <10%+2d

3. Output Maximum Voltage Load Capacity and Short Circuit Current

Voltage/load: 5000V/40M

Voltage sag: about 10%

Short circuit current: > 1.6mA

4. Power supply scope and power loss

DC: 8 x 1.5V (AA, R6) battery

Communication: 220V/50Hz

Power consumption: static power consumption < 160mW; maximum power < 2.5W

5. Volume and weight

Volume: 235 mm (L)x 200 mm (W)x 135 mm (D);

Weight: <1.4 kg

This table has the following characteristics:

It has high output power, strong load capacity and strong anti-interference ability.

The outer shell of this table is made of high strength aluminium alloy, equipotential protection ring and fourth-order active low-pass filter are installed in the machine, which can effectively shield the external power frequency and strong electromagnetic field. Because the output short-circuit current is greater than 1.6mA, it is easy to make the test voltage rise rapidly to the rated value of the output voltage. For low resistance measurement, the voltage drop does not affect the measurement accuracy because of the proportional design.

This instrument does not need human work, and is powered by batteries. Its range can be automatically changed. Clear panel operation and LCD display make the measurement very convenient and fast.

The output short-circuit current of this table can be measured directly without load measurement.