PC40B type insulation resistance tester (high resistance meter)

1. Overview

Insulation resistance testerSuitable for measuring insulation resistance of insulation materials, electrical products, and various electronic components; After being matched with a constant temperature water tank (tank), it is also possible to measure the insulation resistance of plastic wires and cables (without shielding layer) at different temperatures. This instrument has the advantages of high measurement accuracy, stable performance, and easy operation.

2. Specifications and technical characteristics

2.1 Test voltage and measurement range:

Note 2: The basic error testing conditions are temperature of 23 ± 2 ℃, relative humidity of 40-60%, and no other magnetic fields except for electromagnetic fields. The instrument is preheated for 10 minutes before testing.

2.3 Product Features

The measurement range of the insulation resistance tester can be extended to 2 × 1015 Ω;

B adopts high impedance amplifiers to improve measurement accuracy.

C three and a half digit digital display, with intuitive readings;

The input terminal can short-circuit for a short time without damaging the instrument.

Test time: 1 to 99 minutes

2.4 Usage conditions

Environmental temperature: 0-40 ℃, relative humidity: ≤ 70%; Power supply: AC 220V 50Hz

There are no strong electromagnetic interference sources, no large amounts of dust and corrosive gases in the studio, and good ventilation.

The instrument can work continuously for 8 hours.

2.6 Power consumption: approximately 10W.

2.7 Dimensions: 355 × 320 × 145mm (l × b × h)

2.8 Weight: Approximately 6.3kg (main unit).

3. Instrument structure and working principle

3.1 Structure

It consists of a DC high-voltage testing power supply, a discharge testing device, a high impedance DC amplifier, a power supply, and a display.

3.2 Working principle

The insulation resistance tester is mainly used for high resistance testing. During testing, the test sample is connected in series with the input resistor "Ro" of the high impedance DC amplifier and across the DC high voltage test power supply. The high impedance DC amplifier amplifies the divided voltage signal on its input resistor and outputs it to the display, which directly reads the measured insulation resistance value.