User Manual Q&AAnswer
Mar 05, 2025 - 02:36 AM
To determine the direction of rotation of electric machinery using the Testboy TV 410 Phase Sequence Indicator, follow these steps:
1. Connect the measuring leads to the object to be measured as indicated by the markings on the tester. Ensure that the connections are properly insulated for safety.
2. Once the connections are made, the glow lamps L1, L2, and L3 on the tester will light up if all three phases are present.
3. The direction of rotation is indicated by the R- and L-glow lamps. If a left-hand field is indicated, you need to change over two of the phase leads.
4. If one of the phases is not present, the corresponding glow lamp will remain dark, while the R- and L-glow lamps will both light up.
5. If two phases are missing, there will be no indication of the direction of rotation.
It is important to note that the Testboy TV 410 Phase Sequence Indicator does not require batteries or an external power supply. It draws its operating voltage from the object under test. The appliance does not require any maintenance and should only be opened by specially-trained personnel. If you have any uncertainties or questions about operating or handling the device, it is recommended to contact the manufacturer's sales staff for assistance.
For further technical details and specifications, refer to the provided manual or visit the manufacturer's website at http://www.testboy.de.
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