Introduction

The HM2670 series AC DC Withstanding Voltage Tester is a universal high voltage testing set, which is widely used in the withstand voltage test of electrical device, bakelite appliances, transformers, power cords, motors, power plugs, sockets, cables, etc., as well as various electronic and electrical products Withstand voltage testing. With the establishment of national safety standards, the withstand voltage tester has become an indispensable tester for various electrical manufacturers, electronic products and other manufacturers.

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Working Principle

(1) Relay: This relay controls whether the 220V power supply is connected to the voltage regulator, thereby controlling the output high voltage to be turned on or off.

(2) Voltage regulator: It is mainly composed of a voltage regulator, and the voltage change is realized by the adjustment of the voltage regulator.

(3) Output: increase the output voltage of the voltage regulator according to a ratio of approximately 1:25 to obtain an output high voltage of 0 to 5 (kV).

(4) Current detector: This part of the circuit converts the current flowing through the DUT into a voltage, compares it with the reference voltage, and then outputs a detection signal to the controller.

(5) Controller: According to the signal from the current detector and the start and reset buttons, control whether the relay is connected and whether the alarm circuit alarms.

(6) Alarm: The driver block pushes the buzzer and the over-leakage light to give an audible and visual alarm.

 

HM2670 AC hipot tester main technical parameter

1. Rated voltage:AC:0.5kV～5kV  ±5%

2. Leakage current setting range:AC：0.2～20(mA)   adjustable

3. Leakage current set precision:±5%

4. Power:100VA.

5. Output waveform: 50Hz Sine waveform

6. Timing:1～99（s）±5%  manual∞  adjustable.

7.Power:AC：220V±10%  50Hz±2Hz.

8.Relative Humidity:≤75%RH, Temperature :0℃～40℃.

 There is no strong electromagnetic interference source around, no large amount of dust and corrosive gas, good ventilation.

9. Power consumption: static power consumption < 30VA.

 

Panel as below image

(1) Power switch: Before turning on this switch, be sure to read the section "Precautions for Use".

(2) "External control": used to remotely control the start and reset of the instrument.

(3) "TEST": Start button, when the instrument is not in the "over-leakage" state, press this button, the "test" light will light up, adjust the "voltage adjustment" knob until the voltmeter indicates the desired voltage.

(4) "REST": Reset button. After the withstand voltage test is over, press this button to reset the output voltage (ie disconnect the power). When an over-leak alarm occurs, press this button to reset the instrument.

(5) "Preset adjustment" knob: used to adjust the upper limit preset value of leakage current.

(6) "Preset/Measure" button: switch mA display value to preset value or measured value.

(7), (8), (9) "Leakage current selection" button: used to switch the current gear.

(10) "Timing" button: used to switch the timer timing or not.

(11) "Timer": used to set the test voltage output duration, which can be selected from 1 to 99 (s).

(12) "Display": used to display time, current, and voltage values.

(13) "Test" light: This light is on to indicate that the high voltage is sent to the output terminal, and the high voltage is disconnected when the light is off.

(14) "Excess Leakage" light: When the current in the object under test is greater than the preset value of the leakage current switch, this light will be on.

(15) "Voltage adjustment" knob, used to adjust the size of the test voltage, turn it counterclockwise to decrease.

(16) "High voltage output port": AC test voltage output terminal.

(17) "RETURN": The other end of the test high voltage, usually connected to the outer shell or the other end of the test object, also called the return end of the test current.

FAQ

1.Can you provide  training for us?

Yes, we can provide free training for all customers at our company.

If you require training on-site, we also can arrange accordingly.

2.What is your after-sale service

We have 10 seasoned technical engineers in our after-sale service team. We promise that our engineer can give answers within 1 hour and deal with equipment failure within 24 hours in time.

3.What’s the warranty period ?

Our warranty period is one year .

The product can be replaced within 1 month, can be repaired for free charge  for one year and maintenance for lifetime.

What is more, our warranty can be extended only charged small warranty fee

4.What kind of Certificate you can provide ?

We can provide CE  certificate , and  the third party Calibration Certificate (can be stamped by CNAS),other certificates we also can make according to your requirements.

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