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I have just completed an installation on a fruit farm which all tested 100%.
There are 3 x 3 phase pumps 32a 41a & 41a, only 2 run together at an one time. When the second pump is started the 100A 100mA trips out.
The pumps are run from variable speed controllers on a three wire system, no neutral.
All the equipment is from one supplier. They want to remove the RCD and replace with a main switch but as it is a horticultural installation I feel this is the wrong route. Harmonics may be an issue but I would assume the supplier would be aware of this.
Any ideas welcome.
There are 3 x 3 phase pumps 32a 41a & 41a, only 2 run together at an one time. When the second pump is started the 100A 100mA trips out.
The pumps are run from variable speed controllers on a three wire system, no neutral.
All the equipment is from one supplier. They want to remove the RCD and replace with a main switch but as it is a horticultural installation I feel this is the wrong route. Harmonics may be an issue but I would assume the supplier would be aware of this.
Any ideas welcome.