AC/DC withstand voltage and resistance tester

BDAT-921AC/DC withstand voltage and resistance tester

1feature

1.High power AC withstand voltage test

2.DC withstand voltage test

3.Insulation resistance test

4.Grounding resistance test

5.Conductivity test

6.Leakage current test

7.Electrical performance testing

IITechnical Specifications

The following is an insulation resistance withstand voltage tester (integrated insulation resistance test)+The standard usage process of the voltage withstand test function, combined with safety operation specifications and technical points, is provided for your reference:

1、 Preparation before testing with insulation resistance withstand voltage tester

1. Environmental confirmation

Ambient temperature10℃～30℃ (to avoid temperature affecting accuracy)

Humidity:≤75% RH(Wet environment can easily lead to increased surface leakage current)

No strong electromagnetic interference, no flammable or explosive materials

2. Equipment inspection

The appearance of the instrument is intact, the high-voltage wire is not damaged, and the grounding wire is firm

Confirm the validity period of instrument calibration (usually requiring annual calibration)

Connect the test line in a power-off state

3. Tested equipment（DUT）Prepare

Power off and discharge: disconnectDUTAll external power sources discharge capacitive components (such as power filter capacitors)

Cleaning: Remove surface dust and oil stains (avoid crawling)

Disconnect unrelated lines: Remove external connection lines (such as communication lines, load lines)

4. Personal protection

Wear insulated gloves（≥CAT IIILevel)

Standing on an insulated rubber pad

Set up a warning zone and hang it upWarning sign for "High Voltage Test"

2、 Connection of test line for insulation resistance withstand voltage tester

>Core principle: High voltage end（H）→ Tested conductor; Grounding terminal（G/L）→ Metal shell/Safely located

Insulation voltage tester

∝ - High voltage output line (red) → ConnectedDUTLive parts (such asL/NShort circuited terminal)

∝ - Return Line/Grounding wire (black) → GroundingDUTMetal casing or grounding terminal

└ - Grounding terminal (yellow green) → Connect to an independent grounding post (not mixed with the neutral wire!)

Notes:

During the withstand voltage test: if tested The input circuit needs to be connected to the casingL/NShort circuit the terminal and connect it to the high voltage end, then connect the casing to the return end

During insulation resistance testing: the wiring is the same, but usually needs to be disconnectedDUTInternal grounding (according to standard requirements)

3、 Parameter settings

1. Voltage withstand test mode（AC/DC HiPot）

|Parameters|Setting criteria|Typical Value Example

|Test voltage|Product safety standards (such asGB 4706.1）| 1500V AC (Basic insulation of household appliances) |

|Testing time|Standard regulations (commonly used in production)1~3Seconds)| 60Second (Type Test)

|Leakage current upper limit|Standard limits (such asClass IEquipment ≤5mA）| 3.0 mA(Leave a margin)

|Slow rise time|Reduce impact (standards may require)5Seconds)| 5Second|

|Alarm mode|Stop immediately upon exceeding the limit| ON |

2. Insulation resistance testing mode

|Parameters|Setting criteria|Typical Value Example|

|Test voltage|Standard regulations (such as500V DC）| 500V (low-voltage equipment) |

|Testing time|Stable reading (≥)30Seconds)| 60Second|

|Qualified threshold|Standard limits (such as ≥)2MΩ)| 100MΩ (Enterprise Internal Control)|

4、 Safe boot test

1. Turn on the instrument power, enter standby mode after passing the self-test

2. Initiate contact check (if any):

Function: Check if the test line is in good contact

Operation: Press`CONTACT CHECK`Key, confirm none“Open Circuit”Alarm

3. Safety confirmation:

Close the protective door of the testing area (trigger safety interlock)

Loud warning:High voltage test started

4. Perform testing:

Manual mode: Press`TEST`Button

Automatic mode: triggers remote start signal (for production line)

5、 Monitoring during testing

|Phenomenon|Possible reasons|Response measures

|Sudden increase in leakage current>upper limit|Insulation breakdown/Flashing over|The instrument automatically cuts off high voltage and recordsFAIL |

|The current slowly rises|Insulation that is damp or dirty|Continuous observation, stop immediately upon exceeding the limit|

|Instrument alarm "overload"|Insufficient output capacity (large capacitive load)|Switch to a higher power model orDCTesting|

|Test line ignition/Abnormal noise|Air breakdown or poor connection|Urgent pressSTOPThe key! Check the connection|

6、 Operation after testing

1. Discharge:

DCTesting or capacitive load: waiting30For more than a second, use a discharge rod to touch the high voltage end and discharge it to the casing

Confirm that the instrument displays zero voltage（<5V）

2. Disconnect:

Remove the high-voltage line first → Disassemble the return line again → Finally remove the grounding wire

3. Result record:

Save data:PASS/FAILLeakage current value, insulation resistance value (if applicable)

Print or export to quality system (with timestamp)

7、 Key safety prohibitions

Prohibition: One handed operation, wet hand operation, and moving wires during testing

Prohibition: Skip the grounding step or use damaged test wires

Prohibited: inDUTTest under powered on state

Emergency situation: Immediately press the red emergency stop button on the instrument!

8、 Maintenance points

|Cycle|Operation|

|Daily|Clean the surface of the instrument and check the cables|

|Monthly|Calibrate the zero point of leakage current (using a calibration box)|

|Every year|Send the metrology institution for comprehensive calibration|

|After the malfunction|Stop using and label as' awaiting repair '|