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better way
Now there is a better way to complete this task: the VeriSafe Absence of Voltage Tester from Panduit. It is a permanently installed tester designed to allow users to determine the status of voltage inside their equipment before it is opened, reducing risk and increasing worker safety. VeriSafe consists of three components: the indicator module, the isolation module with sensor leads, and the system cable that connects the two modules. The indicator is intended to be mounted on the enclosure bulkhead. The isolation module is installed inside the enclosure, either DIN rail mounted or surface mounted. The images on the right hand side of the slide help to show how the device works. These are the different indications provided by the indicator module during operation. The image at the very top shows the RED LED indicators; one segment for each phase. The second image shows that indication disappears when the power is turned off. The user can then initiate an absence of voltage test by pushing the test button on the indicator module, as shown in the third image. The test consists of a series of diagnostic steps. It will 1) check all connections of the tester, 2) perform a self test of the tester, 3) perform the absence of voltage test, 4) repeat self test and 5) verify connections again. When these steps are underway, a flashing (triangle) indicator will indicate that the test is in progress. If all tests pass, a green indicator will illuminate. This is shown in the fifth image (at the very bottom). The green indicator is the signal that the tester functions properly, all connections are secure, and there is no voltage at the testing point. On the other hand, if any of the above steps fails, the green indicator will not come on. Instead, a yellow warning indicator (triangle) will illuminate to indicate that either the voltage is still present, or there is something wrong with the installation, for example a bad connection or a bad tester. This condition is shown in the fourth image.
PTM Published on: 2017-08-01