Introduction to Pointer Insulation Resistance Tester
Preventive testing of electrical equipment is an important part of ensuring the safe operation and maintenance of power systems. Insulation diagnosis is an important means of detecting insulation defects or faults in electrical equipment. Pointer Insulation Resistance Tester is a special instrument for measuring insulation resistance. JJG662-89 "Insulation Resistance Meter (Megohmmeter)", approved for implementation in May 1990, has made it one of the mandatory verification instruments. At present, electrical equipment is developing towards large capacity, high voltage, structural diversity, and sealing. This requires the insulation resistance meter (pointer type) itself to have characteristics such as large capacity, strong anti-interference ability, diverse measurement indicators, accurate measurement results, simple and rapid measurement process, and portability. Pointer Insulation Resistance Tester adopts ultra-thin taut-band meter head, multiple voltage level outputs, large capacity, strong anti-interference, AC/DC dual-use (Type C), simple operation, and time reminder function. It is an ideal testing instrument for measuring insulation resistance of transformers, mutual inductors, generators, high-voltage motors, power capacitors, power cables, lightning arresters, etc.
Technical Parameters
| Model |
HT2533 |
| Output Voltage |
500V DC |
1000V DC |
2500V DC |
| Accuracy |
Temperature |
23℃±5℃ |
| Insulation Resistance |
1MΩ～20GΩ±5% |
2MΩ～40GΩ±5% |
5MΩ～100GΩ±5% |
| Output Voltage |
4MΩ～20GΩ 0～+10% |
8MΩ～40GΩ 0～+10% |
20MΩ～100GΩ 0～+10% |
| High Voltage Short Circuit Current |
≥1mA |
| Power Supply |
8 AA batteries |
| Operating Temperature and Humidity |
-10℃～40℃, max relative humidity 85% |
| Storage Temperature and Humidity |
-20℃～60℃, max relative humidity 90% |
| Insulation Performance |
When voltage between circuit and housing is 1000V DC, max 2000MΩ |
| Withstand Voltage Performance |
Withstands 2500V AC between circuit and housing for 1 minute |
| Dimensions |
230×190×90mm3 (L×W×H) |
| Weight |
2kg |
Product Features
- 1. The insulation test of the resistance tester can measure up to 20GΩ at 500V, up to 40GΩ at 1000V, and up to 100GΩ at 2500V
- 2. The rated output voltage is maintained at a load resistance as low as 4MΩ/8MΩ/20MΩ for HT2533 model, enabling the meter to accurately measure low insulation impedance
- 3. Automatically switched high and low range dual scale indication, color scale for easy reading, and LED display with corresponding colors
- 4. The whole machine adopts ABS plastic casing portable design, the resistance tester has strong anti-interference ability, compact structure, and beautiful appearance
- 5. The meter adopts ultra-thin taut-band meter head, strong seismic resistance
- 6. AC/DC dual-use, built-in rechargeable battery and intelligent charging module, high output power (Type C)
- 7. It is an ideal testing instrument for measuring insulation resistance of transformers, mutual inductors, generators, high-voltage motors, power capacitors, power cables, lightning arresters, etc.
