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Introduction
GM-5kV High Voltage Digital Megohmmeter is designed for measuring Insulation characteristics of large high voltage transformers, electrical machinery electric appliance, remote power cables or buried cables, etc, solving the problem of filed interference in power plants, substations.
Note: To ensure safety, the series products must be well grounded before use.
Features
1. Microcomputer control, menu operation, LCD display, stable performance
2. Suitable for measuring in strong electromagnetic interference environment.
3. Wider measuring range, several voltage output gears.
4. Output voltage is continuous and adjustable
5. Auto measure R15, R60, R600, auto calculate DAR, PI
6. Strong load capacity, short-circuit current about 5mA.
7. Measuring range up to 0 ~ 10TΩ, auto switching range.
8. The analog bar pointer & digital display, clear and accurate
9. Test time display at any time, buzzer beeps every 15 seconds
10. Auto discharge high voltage within 30 seconds after test
11. Auto measure ambient temperature, air humidity, date and time.
12. Storage capacity up to 60 records, data may not be lost for 20 years.
13. RS232 serial interface
14. Built-in Micro-printer
15. Auto remind power off when no operation for 5 minutes
16. Perfect protection, high reliability
Technical parameters
| Rating test voltage | 50V, 100V, 250V, 500V, 1.0kV, 2.5kV, 5.0kV | |
| Measuring range high limit | 10TΩ | |
| Output voltage error | ± 5 % | |
| Short circuit current | about 5mA | |
| First half range basic error | ±( 5%·Rx + 1d ) | |
| Second half range basic error | ±( 10%·Rx + 2d ) | |
| High voltage display error | ±( 5%·Ux + 1d ) | |
| Temperature measurement error | ±0.5ºC | |
| Air humidity measurement error | ±2%RH | |
| Power supply | 14.8V lithium battery | |
| Battery run time | 30 days, every day 10 times DAR test & 5 times PI test | |
| Insulation resistance | >500MΩ(between test line and case) | |
| Withstanding | AC10.0kV 50Hz 1min(Test line to the case) | |
| Temperature and humidity | 0ºC~+40ºC < 85%RH | |
| Storage temperature and humidity | -20ºC~+50ºC < 90%RH | |
| Dimensions and N.W. | 320×230×270mm, 4.5kg | |
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