1. The performance of the insulation resistance meter complies with the technical requirements of GB7676-1998 (Direct Acting Indicating Electrical Measuring Instruments and Their Accessories) and ZBN21012 (Insulation Resistance Meter) technical requirements.
2. The reference value of the instrument is the indicated value.
3. The basic error of the instrument is expressed as a percentage of the reference value, and the limit value of the basic error is not greater than the accuracy class value.
The 0 and ∞ scale marks are expressed as a percentage of the scale length, and their limit is not greater than 1% of the total scale length.
3. The difference between the open circuit voltage and the rated voltage at the instrument terminals is not greater than 10% of the rated voltage.
4. The ratio of the peak value to the effective value of the open circuit voltage at the instrument terminals is not greater than 1.5.
5. When the measuring terminals of the instrument are connected to the median resistance, the difference between the voltage and the rated voltage is not greater than 10% of the rated value.
6. The insulation resistance between the instrument circuit and the housing is not less than 30MΩ.
7. The insulation voltage test between the instrument circuit and the housing can withstand a 50Hz AC voltage for 1 minute. The test is shown in the table below: Rated Voltage Test Voltage (RMS)
500V 1, 1000V 1.5, 2500V 3.5, 5000V 5.4
8. The rated speed of the instrument generator crank is 120 revolutions per minute.
9. When the instrument is tilted in any direction from its working position, the change in indicated value is not greater than half of the basic error.
10. For every 10°C change in the working environment temperature from the standard temperature (23°C), the resulting change in indication is not greater than the basic error.
11. When the standard ambient humidity changes from 40-60%, the resulting change in indicated value is not greater than 1.5% of the reference value.
12. The reliability of the instrument complies with JB/T6214-1992 "Reliability Verification Test and Determination Test for Instruments and Meters - Exponential Distribution Guide".
13. The transportation and storage of the instrument comply with JB/T9329-1999 "Basic Environmental Conditions and Test Methods for Transportation and Storage of Instruments and Meters".
Product Introduction:
3. Test voltage range: 250V/500V/1000V/2500V/5000V (KEW 3125A)
10. Design complies with international safety specifications IEC61010-1 CAT IV 300V/CAT III 600V
Technical Parameters:
Rated Voltage (V) 100 250 500 1000
Tolerance ±10% (for export, arc length error)
Measuring Range 0～100 0～250 0～500 0～1000
Accuracy (Class) 10
Dimensions/Weight 205W * 145D * 120H / 2
Hand-cranked Megohmmeter
The megohmmeter (megger) is commonly known as a megger. Most megohmmeters are powered by a hand-cranked generator, hence the name. Its scale is in megohms (MΩ). It is a common measuring instrument used by electricians, mainly to check the insulation resistance of electrical equipment, household appliances, or electrical circuits to ground and between phases, to ensure that these devices, appliances, and circuits operate in normal condition, avoiding electric shock casualties and equipment damage accidents.
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
