Single-line diagram of a single-phase electrical installation

Question

Hello everyone

I`m trying to understand the single-line diagram. I have a request to check the diagram I have drawn, which is to be sent to ZE. This is a single-phase installation on the plot. Generally, I am asking for advice on whether my scheme makes sense :)

kozi966 · Answer

NO. From the beginning: I see the counter 3f. You mark the connections with dots and the PEN hangs in the air or on the ground. Are you moving from where? from the earth electrode? PE too? This is what it looks like from this diagram. No information about the network system from ZE. Is a 3m pin supposed to guarantee a transfer resistance of less than 10 ohms? Any data for such a statement (soil resistivity)? Why is there a ban in ZK? 160A and pre-meter bills. is unmarked? Why pre-meter is a circuit breaker? (there will probably be a lack of selectivity).

elpapiotr · Answer

- Single-phase power supply and output via a 3-phase meter?
- No pre-meter security value
- What kind of 160 A fuse switch is this?
- No cross-sections and lengths of power lines provided.
- No kWh localization and input protection.
- Switching to single-phase power supply again (probably the facility`s switchgear)?
- What is the function of the switch? automatic 1P 20 A ?
- Where is the lighting circuit?

The rest was provided by my colleague kozi966.

qbart_gt · Answer

I made corrections. Now the drawing looks like this:

The network system from ZE is TN-C. I corrected the value of the fuse switch in the connector, which is actually 40A. This is the RBK00 disconnector. The pre-meter protection is 13A and has C characteristic. There are no lighting circuits because there is no gazebo on the plot, and only two sockets are needed.

In the drawing, the facility`s switchgear was supposed to be FR301, not FR303

haneb · Answer

Some strange extension of the PEN bus in ZK to the switchgear, no cable connection to it (e.g. introduced only on FR). No information about the type of cables and cross-section.

Łukasz-O · Answer

What is the point of B16 security measures if there is C13 in front of the counter?

qbart_gt · Answer

Yes, I know it doesn`t make any sense. I didn`t make the switchboards. Just trying to make a diagram. Another version of my diagram: I don`t know if it draws the dividing point correctly. I will be grateful for any comments.

haneb · Answer

The minimum cross-section of PEN is 10mm² Cu and 16mm² Al, so a 2x4mm² cable is an error.
Such a division in the switchgear would cause the residual current circuit breaker to trip.

For me it`s more or less like this:

Single-line diagram of a single-phase electrical installation

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