Transformer Ratio Polarity Tester Wiring Instructions
Voltage Transformer Test:
The “output” terminal of the instrument is connected to the A terminal on the high-voltage side of the voltage transformer.
2) The “output” terminal of the instrument is connected to the X terminal on the high-voltage side of the voltage transformer.
3) The “input” terminal of the instrument is connected to the a terminal on the low-voltage side of the voltage transformer.
4) The “input” terminal of the instrument is connected to the x terminal on the low-voltage side of the voltage transformer.
Current transformer test:
1) The “output” terminal of the instrument is connected to the K1 (S1) terminal on the low current side of the current transformer.
2) The “output” terminal of the instrument is connected to the K2 (S2) terminal on the low current side of the current transformer.
3) The “input” terminal of the instrument is connected to the L1 (P1) terminal on the high current side of the current transformer.
4) The “input” terminal of the instrument is connected to the L2 (P2) terminal on the high current side of the current transformer.
Special instructions for the wiring of the through-core current transformer: The wiring on the low current side of the through-core current transformer can follow the second item. For the high current side, only one wire is needed. The connection wire should be inserted into the “input” red terminal of the instrument. The wire enters the center of the hole from the L1 (P1) side on the high current side of the current transformer and exits the center of the hole from the L2 (P2) side. [If the specification on the nameplate requires N turns of the through-core N pole, then this wire should enter from the L1 (P1) side again and exit from the L2 (P2) side until there are N wires at the center of the hole.] Finally, connect this wire to the “input” black terminal of the instrument.
Transformer Ratio Polarity Tester Usage Instructions
1. Regarding charging: Connect one end of the charger to this instrument and the other end to a 220V power outlet. Then the charging process begins. At this time, the red indicator light on the charger will light up. When the indicator light turns green, it indicates that the charging is complete.
2. Regarding the test:
Depending on the type of measurement object, connect the wires correctly as per the third section of this manual (do not connect the “output” and “input” terminals in reverse, as it may damage the instrument).
2) Power On: Turn on the instrument switch. The instrument screen will display “Current Voltage Transformer Ratio Polarity Tester”.
3) Measurement: Press the “Measurement” button once. The screen will display “Ratio: ******, Polarity: ******”. Press the “Measurement” button again. After approximately 2 seconds, the measurement result will be displayed on the screen, such as: “Ratio 100.025, Polarity Negative to Positive”.
4) If you need to re-perform the measurement or measure the next object, simply press the “Reset” button and then repeat the third step.
3. Result Analysis:
1) If the measured ratio value is extremely large, such as exceeding 10,000 (this number is random and uncertain), it indicates that the wiring circuit is not connected properly. Please recheck the wiring. If the wiring is correct, it suggests that there is a break inside the tested object.
2) The polarity test results show that “negative polarity” is normal while “positive polarity” is abnormal. Please check the wiring method.
Post time: Mar-20-2026