Опис
The ohmmeter is designed for measuring the insulation resistance of alternating current networks with an isolated neutral voltage up to 420 V at frequencies from 45 Hz to 500 Hz.
The ohmmeter is manufactured in accordance with the requirements of DSTU EN 61010-1:2014 “Requirements for the safety of control and measuring and laboratory electrical equipment. Part 1. General requirements”, GOST 22261-94 “Measurements of electric and magnetic quantities. General technical conditions”.
Technical characteristics
The insulation resistance measurement range is from 0 to 5 MΩ.
Accuracy class 2.5.
The minimum price of scale divisions is 0.02 MΩ.
The length of the scale is not less than 50 mm.
Supply voltage (220 ± 22) V.
The frequency of the power supply network is from 45 Hz to 500 Hz.
Power consumption is no more than 1 W.
Input resistance is not less than 250 kΩ.
The operational current is no more than 0.6 mA.
The operating mode is continuous. The duration of continuous work is not limited. Intermittent operation is allowed
Time to set the working mode is 15 minutes.
The working position of the ohmmeter is vertical.
Working conditions of application:
- ambient air temperature from minus 50 ºС to plus 70 ºС;
- relative air humidity up to 95% at a temperature of 35 ºС
The overall dimensions are 80 mm x 80 mm x 100 mm.
The weight is not more than 0.2 kg.
The average earnings per refusal is at least 40,000 hours.
The average term of service is 10 years.
The sector from 0 to 20 kΩ (emergency insulation resistance) is painted red on the ohmmeter scale.
Mount the ohmmeter on the shield panel.
The marking of the holes in the shield for mounting the ohmmeter is shown in the figure:
