Hello. I have a problem because I have three heaters made of resistance wire. The power of each supposedly 2kw. And I don't know if I need to connect a neutral conductor with a star connection. Will with zero without it will work the same as with zero. Each heater has 25.4Ohm Thanks for the...

The question is what type of network and heater you have, what is the voltage and what is the device.

This is a wrong wiring diagram, but the author will probably say where he lives and based on its location zbich70 we will guess.

Tel. 600 97 44 03 call the author of the topic

As the heaters are identical, they are connected in a star and constitute a symmetrical receiver. No current will flow through the neutral conductor (except in the case of voltage unbalance), so in principle it is not necessary to connect it.

And the protective conductor are you going to connect?

Damn but I have now measured these heaters and one has 25ohm the other 25.2ohm and the third 26.5ohm. So with this configuration you need zero? Protective conductor only on the furnace casing?

What is IPZ? PS. They are resistance wire heaters wound in spring on request from a company producing heaters

Or? You know I'm a beginner I would be grateful if you would describe more or less how to measure it.

It is to be a ceramic oven. I think 230v, but I don't know completely. When ordering, I told the seller what they are about to be three heaters of 2kw and gave the temperature to which they are to heat. Everything is controlled by a thermostat and contactless contactors.

The point is that this furnace (or anything else) should be joined by an individual who has the knowledge and skills ... documented . Otherwise, the insurer will cry out, but the prosecutor will start rummaging.

Three-Phase Heaters (2kW Each) - Star Connection: Neutral Conductor Required? 25.4 Ohm Resistances

s.alex5 9930 15

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#1 16167450 02 Jan 2017 16:01

s.alex5 s.alex5

Level 8

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Post #1
16167450 02 Jan 2017 16:01

Hello.
I have a problem because I have three heaters made of resistance wire. The power of each supposedly 2kw.
And I don't know if I need to connect a neutral conductor with a star connection.
Will with zero without it will work the same as with zero.
Each heater has 25.4Ohm
Thanks for the reply. Regards.
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#2 16167490 02 Jan 2017 16:18

JaroPC JaroPC

Level 16

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Post #2
16167490 02 Jan 2017 16:18

As the heaters are identical, they are connected in a star and constitute a symmetrical receiver. No current will flow through the neutral conductor (except in the case of voltage unbalance), so in principle it is not necessary to connect it.
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#3 16167525 02 Jan 2017 16:32

zbich70 zbich70

Level 43

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Post #3
16167525 02 Jan 2017 16:32

s.alex5 wrote:
And I don't know if I need to connect a neutral conductor with a star connection.

And the protective conductor are you going to connect?
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#4 16167576 02 Jan 2017 16:49

s.alex5 s.alex5

Level 8

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Post #4
16167576 02 Jan 2017 16:49

Damn but I have now measured these heaters and one has 25ohm the other 25.2ohm and the third 26.5ohm.
So with this configuration you need zero?

Protective conductor only on the furnace casing?
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#5 16167608 02 Jan 2017 17:02

zbich70 zbich70

Level 43

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Post #5
16167608 02 Jan 2017 17:02

s.alex5 wrote:
Damn, but now I have measured these heaters and one has ....

Measure IPZ again
#6 16167615 02 Jan 2017 17:05

s.alex5 s.alex5

Level 8

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Post #6
16167615 02 Jan 2017 17:05

What is IPZ?

PS.
They are resistance wire heaters wound in spring on request from a company producing heaters
#7 16167622 02 Jan 2017 17:09

zbich70 zbich70

Level 43

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Post #7
16167622 02 Jan 2017 17:09

s.alex5 wrote:
What is IPZ?

Short circuit loop impedance.
#8 16167625 02 Jan 2017 17:11

s.alex5 s.alex5

Level 8

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Post #8
16167625 02 Jan 2017 17:11

Or?
You know I'm a beginner I would be grateful if you would describe more or less how to measure it.
Helpful post

#9 16167633 02 Jan 2017 17:15

zbich70 zbich70

Level 43

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Helpful post
Post #9
16167633 02 Jan 2017 17:15

Link
Helpful post

#10 16167643 02 Jan 2017 17:21

Hajna Hajna

Level 24

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Helpful post
Post #10
16167643 02 Jan 2017 17:21

The question is what type of network and heater you have, what is the voltage and what is the device.
#11 16167673 02 Jan 2017 17:35

s.alex5 s.alex5

Level 8

» | Topic author Helpful post? (+1)

Post #11
16167673 02 Jan 2017 17:35

It is to be a ceramic oven. I think 230v, but I don't know completely.
When ordering, I told the seller what they are about to be three heaters of 2kw and gave the temperature to which they are to heat.
Everything is controlled by a thermostat and contactless contactors.
Helpful post

#12 16167680 02 Jan 2017 17:38

Hajna Hajna

Level 24

» | Helpful post? (+1)

Helpful post
Post #12
16167680 02 Jan 2017 17:38

This is a wrong wiring diagram, but the author will probably say where he lives and based on its location zbich70 we will guess.
#13 16167692 02 Jan 2017 17:42

s.alex5 s.alex5

Level 8

» | Topic author Helpful post? (0)

Post #13
16167692 02 Jan 2017 17:42

What is going on???
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#14 16167707 02 Jan 2017 17:47

Hajna Hajna

Level 24

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Helpful post
Post #14
16167707 02 Jan 2017 17:47

Tel. 600 97 44 03 call the author of the topic
#15 16167712 02 Jan 2017 17:53

zbich70 zbich70

Level 43

» | Helpful post? (0)

Post #15
16167712 02 Jan 2017 17:53

s.alex5 wrote:
What is going on???

The point is that this furnace (or anything else) should be joined by an individual who has the knowledge and skills ... documented .
Otherwise, the insurer will cry out, but the prosecutor will start rummaging.
#16 16167724 02 Jan 2017 17:58

s.alex5 s.alex5

Level 8

» | Topic author Helpful post? (0)

Post #16
16167724 02 Jan 2017 17:58

Thank you for your help.
greetings
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Topic summary

The discussion revolves around the connection of three identical 2kW resistance wire heaters configured in a star connection. The main query is whether a neutral conductor is necessary, given that the heaters have resistances of approximately 25.4 Ohms each. Responses indicate that in a symmetrical load configuration, a neutral conductor is not required unless there is a voltage imbalance. The author later questions the need for a neutral conductor after measuring slight variations in resistance among the heaters. Additional inquiries about protective conductors and the specifics of the heating system, which is intended for a ceramic oven, are also made. The importance of proper installation by a qualified individual is emphasized to avoid safety and legal issues.
Summary generated by the language model.