Hi there,
Attached is a photo of a step down transformer from within an industrial control panel.
Consists of:
400V Primary taken from two phases.
Secondary is tapped 230VAC-0 and 24VDC-0.
What I would like to know is why did they tie the 0V of both taps to earth?
Should these not be kept floating with respect to earth?
I have a schematic of supply but the connection (green/yellow) earth wire is not present on either of the 0V taps, yet it has been fitted after.
Regards NM
Attached is a photo of a step down transformer from within an industrial control panel.
Consists of:
400V Primary taken from two phases.
Secondary is tapped 230VAC-0 and 24VDC-0.
What I would like to know is why did they tie the 0V of both taps to earth?
Should these not be kept floating with respect to earth?
I have a schematic of supply but the connection (green/yellow) earth wire is not present on either of the 0V taps, yet it has been fitted after.
Regards NM
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