Updated Pylontech wiring

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Cansin Sari asked Apr 6, '21

Updated Pylontech wiring

Victron has updated its Pylontech Wiring. See the picture below.

In the version before, the GND cable was connected to the negative pole of the DC Distributor.

Now they have excluded the GND cable at the negative pole of the DC distributor. So the system is not grounded at the negative pole anymore.

Why did they change it?

Is it true, that the negative pole of the Battery is connected to Ground over the case Ground, as this fellow says:

https://community.victronenergy.com/questions/48804/pylontech-battery-earthing.html

I have read in the MPPT manual:

WARNING: WHEN A GROUND FAULT IS INDICATED, BATTERY TERMINALS AND CONNECTED CIRCUITS MAY BE UNGROUNDED AND HAZARDOUS.

So the MPPT should be grounded on the negative pole am I right?

Pylontech victron schematics

ds-pylontech-managed-lithium-battery-2021-3-11.jpg (80.2 KiB)

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Answer 1 · 2021-05-10T17:44:31Z

Alexandra answered · May 10, 2021 at 05:44 PM

@Cansin Sari

That is why the disclaimer is on the diagram - grounding varies according to region and battery manufacturer specifications. And the drawing is for illustration purposes mainly, what Victron does require for grounding for their equipment to work is illustrated.

So if your region or regulations wants negative grounding then that is what you do.

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