Insulation Resistance Meter

I. Technical specifications

safety specifications

IEC 61010-1 CAT.IV 600V pollution level 2

IEC 61326 EMC specifications: electrical equipment for testing, control and inspection

IEC60529 IP64 (box closed)

The safety performance of insulation resistance meter conforms to iec61010-1:2001.

This instrument complies with standard Q/WKD10.

Insulation resistance: 50M (between measuring line and housing)

2.withstａnd voltage: AC 10kV 50Hz 1min (between measuring line and housing)

3.operating temperature and humidity: -10℃ ~ +50℃ 85%RH

4.storage temperature and humidity: -15℃ ~ +55℃ 90%RH

5.charging power supply: 230V, 50/60 HZ

6.battery power supply: 16V lithium ion rechargeable battery 2600mAH or measurement while charging, does not affect the test accuracy.

7.size: 27 ×22 ×15cm

8.weight: 3kg

9.test voltage accuracy: 99% to 110% of nominal value

10.voltage measurement accuracy: 5%+10V

11.short circuit current: 7-10ma.

12.display mode: digital and analog pointer dual display.

II. Technical indicators

III. Instrument introduction

panel introduction

Introduction to key and measurement status:

key and function description

"Power on and off" button: press the power button 2s instrument is in the power state (figure 2-1) :

At this time, the test line should be connected according to the instructions according to the requirements of the subject. The device "is self-checking" flashing, and the flashing stops the completion of self-checking (the device cannot start the measurement during self-checking). At this time, if the induced voltage of the tested equipment shows >2000v, the equipment cannot be started either. At this time, the measurement can only be started after cooperating with the "anti-interference insulation resistance suppression device" of the company's independent intellectual property rights.

Select the appropriate voltage by pressing the "voltage selection" button, such as the selected voltage 5000v (FIG. 4); Then press "start stop" (press once to start the work, and then press once to stop the work) button to start the work of the instrument, at this time there is high voltage output, pay attention to safety!

"Out v": The device under test is energized for other reasons before it is tested.

When the insulation resistance is connected to the test wire, if the test object is electrified or the induced voltage is caused by mutual inductance coupling, the Insulation Resistance Tester will alert the danger of electrification and indicate the electrification voltage, which can prevent the accident from happening Better ensure the safety of operators.

1. Due to not pay attention to the fault of the live equipment is considered as a power outage equipment.

2. In large substations above 110 kv, especially in 500 kv substations, the induced voltage is present in the power-off equipment due to mutual inductance and coupling.

3. For overhead lines, because of the increasing density of overhead line corridors, the coupling between lines can also produce fatal induced voltage. For lines with induced voltage, the test of insulation resistance is very important.

Method of use

1. use of G terminal (protective ring)

For basic insulation tests, where there is little surface leakage affecting measurements, it is not necessary to use shielding terminals. That is, insulators are clean and free of adverse current channels. However, during the cable test, there may be a surface leakage channel through the insulator due to moisture and dirt between the exposed cable and the skin. In this case the effects of this leakage need to be eliminated, especially under high pressure test. A bare wire may be tightly wound around the insulation and connected to shield terminal G through a third test wire.

2 battery level check

● built-in large capacity battery 2600mAH, when prompted battery voltage down, please timely charge, also can charge while measuring, do not affect the measurement accuracy.

● it takes about 8 hours for the internal battery of the instrument to be fully sufficient. When the battery voltage is about 13V, the battery power is insufficient. When the battery voltage is <13V, the instrument will display "battery voltage <13V", which needs to be charged immediately.

● in order to extend the life of the battery, the company develops intelligent battery management, which displays the battery voltage and peak voltage and charging time when the battery is fully charged.

3 display insulation parameters during test

In the test, the LCD display screen displays the current resistance value, test time, R15S, R60S, R10min insulation resistance and absorption ratio (R60S/R15S) and polarization index value (R10min/R1min) in chronological order. (note: when the high pressure is turned on, the previous group of data will be cleared and new data will be recorded.)

4 show test voltage

At the end of the test, the meter will automatically display the voltage value between L end and E end during the test, and observe the drop voltage value with load in real time according to the procedure.

5 leakage current detection function.

Real-time detection of leakage current changes with load visually reflects the insulation of test products. When the voltage rises to the required test voltage, the leakage current stays the same and decreases. Then the insulation is qualified. Otherwise, the insulation has problems.

6 automatic discharge function

Try to adopt advanced technology of high voltage discharge of capacitive rapid discharge, discharge the real-time measurement of discharge voltage (try test voltage to 0 v), for example: the sample (s) test voltage 5000 v, so when to stop testing discharge by discharge to 0 v, 5000 v (real-time visual display) real-time monitoring of discharge voltage, when the "charged" disappear, the operator can remove the operation.

7 display the capacitance value of the subject.