The control cabinet is powered by a DC power supply; the positive terminal of this supply has a voltage of 0V with respect to ground, while the negative terminal has a voltage of -24V with respect to ground. What is the reason for this?
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The control cabinet is powered by a DC power supply; the positive terminal of this supply has a voltage of 0V with respect to ground, while the negative terminal has a voltage of -24V with respect to ground. What is the reason for this?
24V power supply: using a DC voltmeter, connect the black probe to the negative terminal of the power supply; for 24V, the black probe is connected to the positive terminal, resulting in -24V. The potential difference between the positive and negative terminals is 24V
There is no issue with using the multimeter, as the positive terminal reads 0V with respect to ground. I thought about it; one option is to ground the positive terminal while leaving the negative terminal unconnected. I’m not sure if it’s correct.
The positive terminal is grounded, so the negative terminal must be at –24V.
No, it is 0V when the positive pole is connected to ground, and -24V when the negative pole is connected to ground. Under normal conditions, it should be -24V when the positive pole is connected to ground, and 24V when the negative pole is connected to ground.