Power testing procedures require a series of insulation performance tests on numerous electrical equipment such as cables, motors, generators, transformers, instrument transformers, high-voltage switches, and surge arresters. The first step is to perform an insulation resistance test. In recent years, with the rapid development of the power industry and the increasing use of large-capacity equipment, ordinary megohmmeters are unable to accurately test their insulation performance.

When testing the insulation resistance of large-capacity power equipment, the insulation resistance value is related to the duration of applied voltage; the longer the voltage application time, the higher the insulation resistance value. This phenomenon is known as insulation absorption. To understand the insulation performance of the tested equipment, it is necessary to conduct absorption ratio and polarization index tests, providing safety assurance for subsequent leakage, dielectric loss, partial discharge, and other insulation performance tests. Our company has introduced the KG3200 Insulation Resistance Absorption Ratio Tester in accordance with standardized power procedures, performing insulation, absorption ratio, polarization index, and withstand voltage leakage tests on power equipment, providing accurate preliminary judgments for a series of insulation tests.

Since charging current directly affects the insulation value test of large-capacity capacitive samples, a large charging current is required. The stronger the charging capability, the closer the absorption ratio test value will be to the true value. The short-circuit current of the XXX model exceeds 5mA, overcoming the shortcomings of small short-circuit currents, inaccurate testing, and susceptibility to interference in ordinary megohmmeters.

By adopting real-time voltage and current sampling for division operations, even if the voltage changes during testing, the resistance value calculated by Ohm's law remains accurate. This meter uses advanced single-chip microcontroller control processes, human-machine interface dialogues, is portable, and easy to operate. It includes high-performance, large-capacity rechargeable batteries, supports both AC and DC power supply, and features undervoltage protection and battery overcharge protection. The instrument can automatically display the current time, save historical test data and times, providing great convenience for testing personnel.

The KG3200 Insulation Resistance Tester is a new type of intelligent instrument and is the optimal choice for testing personnel.

1. Since the charging current directly affects the insulation value test of large-capacity capacitive samples, a high charging current is required. The stronger the charging capability, the closer the absorption ratio test value will be to the true value. The KG3200 Insulation Resistance Absorption Ratio Tester has a short-circuit current greater than 5mA, overcoming the shortcomings of small short-circuit currents, inaccurate testing, and susceptibility to interference in ordinary megohmmeters.

2. This instrument adopts real-time voltage and current sampling for division operations, ensuring that even if the voltage changes during testing, the resistance value calculated using Ohm's law remains accurate.

3. The meter utilizes advanced single-chip microcontroller control processes, featuring a user-friendly interface for easy operation and portability. It includes a high-performance, large-capacity rechargeable battery supporting both AC and DC power supply, and it is equipped with undervoltage protection and battery overcharge protection.

4. The instrument can automatically display the current time, save historical test data along with timestamps, providing significant convenience for testing personnel.

Output Voltage:

• DC500V, -DC1000V, -DC2500V, -DC5000V, -DC10000V Accuracy: ±5% FS (FS is the full-scale value);

Functional Parameters:

• Resistance display range: 100KΩ to 35TΩ
• Measurement ranges:
  • 500V: 0-10GΩ
  • 1000V: 0-20GΩ
  • 2500V: 0-1TΩ
  • 5000V: 0-35TΩ
• Analog progress bar display: 0-10TΩ
• Current measurement accuracy (at 23℃): At all voltages, ±5% ±0.2μA
• Capacitor discharge: From 5000V to 50V, <250 ms/μF discharge time
• Protection rating: IP65 (with cover closed), IP40 (with cover open)
• Safety: Complies with IEC61010-1, CAT IV 600V requirements

Test Accuracy Range:

• 1～10MΩ error: ±10% FS (FS is the full-scale value);
• 10M～10GΩ error: ±5% FS (FS is the full-scale value);
• 20～200GΩ error: ±10% FS (FS is the full-scale value);
• 10T≧200GΩ error: ±20% FS (FS is the full-scale value);

Operating Conditions:

• Ambient temperature: 0℃ to 40℃
• Relative humidity: ≤70% RH

Power Supply Range:

• AC: 220V ±10% for charging (built-in large capacity lithium battery, supports both AC and DC power, portable)

Dimensions and Weight:

• Dimensions: 280mm × 210mm × 100mm;
• Weight: <5kg