| After-sales Service: | Warranty Certificate |
|---|---|
| Warranty: | 1 Year |
| Application: | Relay Protection |
| Power: | Electricity |
| Voltage Output: | 0-250V |
| Current Output: | 0-5A 0-50A 0-150A |
| Customization: |
|---|
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Audited Supplier 
| 1 | Power supply | AC220V±10%, 50Hz |
| 2 | Output Main circuit |
AC output: Current: 0-5A 0-50A 0-150A Voltage: 0-250V continuously adjustable |
| 3 | DC output: Voltage: 0-250V Current: 0-20A 0-500mA |
|
| 4 | Time measurement: 0-99.99S |
|
| 5 | Measuring range |
Voltage: 0~500V 0.5%RD±2d |
| 6 | Current: 0~5A 0~50A 0~150A 0.5%RD±2d |
|
| 7 | Measurement time range: 0.01~99.99S |
How to use
1 Inspection or preparation before use
Before using the instrument, a visual inspection should be carried out, and the grounding end of the three-core power cord should be reliably grounded. Turn on the power switch, and then test power on the instrument. At this time, the two meters should be on, and touch the "Output Selection" button switch with your hand. , the output status indicator should be normal from left to right.
2 Main circuit voltage output operation
Select the output status in the "AC0-250V" range, press the "output control switch" of the main circuit in the lower left corner of the test chamber, and slowly adjust the large knob of the voltage regulator. The pair of voltage/ammeters should display "0~250V" AC voltage. To output "DC0~300V", select the output status in the "DC0~250V" range, and the adjustment method is the same as above.
3 Main circuit current output operation
Select the output status in the "AC0~5A" range, press the "output control switch" of the main circuit and slowly adjust the voltage regulator knob. At this time, the voltage/ammeter should display "0~5A" current, and other current adjustments are similar to this method.
4 Usage examples:
4.1 Voltage relay pickup and release test
First put the instrument in the ready state, connect the relay coil under test to the corresponding voltage output terminal, press the "main circuit output control" switch, and slowly adjust the large knob to make the output voltage rise steadily. When the relay is closed, record the closing voltage. , then adjust the large knob in the opposite direction until the relay is released, and record the release voltage. Based on this, the return coefficient of the tested relay can be calculated. If the relay under test is an overvoltage relay, proceed in the opposite direction.
4.2 Current relay setting value test
Remove the relay under test from the line, connect it to the current output terminal of the instrument, select the appropriate output current range, such as "0~5A" or "0~100A", press the "Output Control" switch, and slowly adjust the maximum Turn the knob to the relay action, observe the voltage/ammeter value, and judge the relay action.
4.3 Determination of time relay delay time
Connect the relay under test to the output terminal (the working voltage is AC or DC according to the requirements of the relay), adjust it to the rated action value, and restore after power outage. Connect the delay moving and closing contacts of the relay under test to terminals II and ⊥, press the "output control" switch, the relay coil will obtain the rated operating voltage, and start the stopwatch at the same time. After the delay time, the stopwatch will stop counting. At this time, the stopwatch The displayed number is the delayed closing time of the time relay. If you want to measure the delayed release, the principle is the same as before, and the actual wiring is reversed.
4.4 Intermediate relay test (with holding coil)
Determine what kind of action mode (voltage or current action) and what kind of holding mode (voltage or current holding) the relay under test is. Taking current action voltage maintenance as an example (DC relay), select the DC current output range (0~500mA or 0~5A), press the "Output Control" switch, slowly adjust the large knob to the relay action, and note the moving current. Then connect the auxiliary circuit output to the relay holding coil end, slowly adjust the small knob to the relay rating, write down the holding voltage value, and determine the quality of the relay based on the action or holding conditions.
In short, as long as you master the conversion relationship between the various outputs of this instrument and the measuring instrument, you can draw inferences from one example and apply them flexibly according to the specific conditions of the relay being tested. I will not give examples one by one here.
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Packaging: Wooden case filled with foam
Shipping: by Air, Sea, Express, etc.
Shipping time: 7-10 work days if it's in stock.
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Company Profile:
A: We are factory.
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock,
it is according to quantity.
A: Payment<=1000USD, 100% in advance.
Suppliers with verified business licenses
Audited Supplier 
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