How To Operate The Electrical Fittings Megohmmeter? How To Maintain It?

How to operate Two Pole Distribution Blocks? How to maintain it?

(1) Operation method:

①Measure the maximum value, turn on the automatic switch *0N", select the required voltage level, lightly calibrate the normal display to light up to represent the voltage, lightly calibrate the high voltage start and stop button, the high voltage indicator light is on, the stable value of L.CD m is printed as the insulation resistance value of the device, when turning off the high voltage, just calibrate the high voltage again, and check the power supply "OFP" when using the whole machine power supply.
②After automatic high voltage, the timer in the machine starts working. When Jmin, the instrument automatically alarms 88. At this time, the value is fixed, which is convenient for calculating the absorption ratio. When measuring the insulation resistance, the line *1." is connected to the conductive part of the object being measured that is insulated from the ground, and the grounding °E" Write the "G" connected to the shell or grounded part of the object being measured, and the "G" hidden to the protective cover of the object being measured or other parts not involved in the measurement to eliminate the error caused by the leakage of the meter. When measuring the insulation resistance between the components of electrical products, the "E" and "E" terminals can be connected to any group of wire ends. For example, when measuring the insulation between the generator phases, the three groups can be exchanged in turn, and the empty one should be safely grounded.

(2) Maintenance and precautions:
① When storing this meter, pay attention to the ambient temperature and humidity. It is better to place it in a dry and ventilated place. It should be dust-proof, moisture-proof, vibration-proof, acid-base and corrosive gas-proof.
② When the object being measured is a normally charged body, the power supply must be disconnected and fully discharged before measurement, otherwise it will endanger the safety of people and equipment! After the high voltage is turned on, there is a high DC voltage between the E and L terminals of this meter. All parts of the human body cannot be touched during the measurement operation.
③ This meter is equipped with a rechargeable battery pack. When the voltage of the rechargeable battery pack in the machine is lower than 7.2V, the undervoltage symbol "-" is displayed in the upper left corner of the meter. Tips: Charge the battery pack in the instrument in time for about 8 hours, until the charging indicator light on the panel becomes dim or even goes out. When the instrument is not used for a long time, the rechargeable battery pack should be charged and maintained regularly.