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Форум / Электрика / Вентиляция туелетов. |

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Berlioz гость

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Школа. 13 санузлов. В каждом по датчику движения. От этих датчиков-должен включаться вентилятор на крыше. (таково задание на проектирование). Как реализовать? Приходит в голову одно: завести все 13 кабелей 2х1,5 (от каждого датчика) на катушку А1-А2 контактора вентилятора. А можно так много заводить? Клемник надо, наверное, модульный рядом с контактором? А то немцы, что выпускают датчики оные, вот что понаписали (каюсь, не читал, времени в обрез-проект горит):
"Dear Mr. Arminas,
when we are talking about the technical possibility about switching 13 motion-detectors in parallel to switch the ventilator it is possible. But we can not
recommend it for the following reasons:
1. Technical background: As you can see from our planning brochure on the page 10 we give some details regarding the recommended and maximum quantity of
parallel switched motion-detectors. The reason for our recommendation is that we can not know all the details and perhaps problems with the existing wiring
or electrical components or systems. So the risk for getting distortions and fail switchings is getting bigger and bigger with the quatity of the parallel
used detectors. The result can be, that the ventilator never stops working. Another important point is that it would be very wasteful to find one special
detector in this system of 13 that might have a malefunction. So the electrician had to check 13 detectors. But the general switching is possible and
nothing will be damaged, but what can not recommend that.
2. Savings background: When we are talking about a building with 13 toilets we are talking about a lot of people using toilets. The detectors are only used
for switching the ventilation so we are talking about a delaytime of about 10-15min.. For switching the light we could use shorter delaytimes like 1-5min.
To give you an impression: At 8.00 in the morning the first employee goes to the toilet the ventilator starts as wanted because of the motion. After the
employee leaves the toilet the delaytime starts to count down (e.g. mentioned 15min). Lets say the first person left the toilet 8.05 then the delay time
would be ended at 8.20 and the ventilator would stop. In the case that another employee enters another toilet ( it is not important which, because all
detectors are in parallel switching) at 8.15 the detector would start the delaytime once again so the ventilator would go on running till 8.30. This might
happen all the time during the day, because of the huge quantity of employees and my impression is that the ventilator only stops in the evening when
nobody is working. Regarding the delaytime it make no sens to reduce the delaytime, because the ventilation would not work properly.
So i am sorry but it is on you now to do this project or not.
For the above mentioned reasons i wouldn´t recommend it.
If you have any further questions do not hesitate to contact me."
"Dear Mr. Arminas,
when we are talking about the technical possibility about switching 13 motion-detectors in parallel to switch the ventilator it is possible. But we can not
recommend it for the following reasons:
1. Technical background: As you can see from our planning brochure on the page 10 we give some details regarding the recommended and maximum quantity of
parallel switched motion-detectors. The reason for our recommendation is that we can not know all the details and perhaps problems with the existing wiring
or electrical components or systems. So the risk for getting distortions and fail switchings is getting bigger and bigger with the quatity of the parallel
used detectors. The result can be, that the ventilator never stops working. Another important point is that it would be very wasteful to find one special
detector in this system of 13 that might have a malefunction. So the electrician had to check 13 detectors. But the general switching is possible and
nothing will be damaged, but what can not recommend that.
2. Savings background: When we are talking about a building with 13 toilets we are talking about a lot of people using toilets. The detectors are only used
for switching the ventilation so we are talking about a delaytime of about 10-15min.. For switching the light we could use shorter delaytimes like 1-5min.
To give you an impression: At 8.00 in the morning the first employee goes to the toilet the ventilator starts as wanted because of the motion. After the
employee leaves the toilet the delaytime starts to count down (e.g. mentioned 15min). Lets say the first person left the toilet 8.05 then the delay time
would be ended at 8.20 and the ventilator would stop. In the case that another employee enters another toilet ( it is not important which, because all
detectors are in parallel switching) at 8.15 the detector would start the delaytime once again so the ventilator would go on running till 8.30. This might
happen all the time during the day, because of the huge quantity of employees and my impression is that the ventilator only stops in the evening when
nobody is working. Regarding the delaytime it make no sens to reduce the delaytime, because the ventilation would not work properly.
So i am sorry but it is on you now to do this project or not.
For the above mentioned reasons i wouldn´t recommend it.
If you have any further questions do not hesitate to contact me."
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Ответы
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Владимир_43 профи

Сообщений: 891 |

2Berlioz:
клеммник обязательно
Выполним работы. КАЧЕСТВЕННО, БЫСТРО, ДЕШЕВО. Выбирайте ДВА любых критерия.
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Василич профи

 Сообщений: 296 |

это пока сидишь на унитазе и махаешь руками и ногами вентиляция работает?!!
Я использую реле времени, хотя наверно у вас уже нет выбора...
И сказал Бог: да будет свет. И сказали электрики: А на этом можно подзаработать...
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Василич профи

 Сообщений: 296 |

конечно ставь клемник
И сказал Бог: да будет свет. И сказали электрики: А на этом можно подзаработать...
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Al Ща профи

 Сообщений: 3291 |

2Василич:
Я использую реле времени и сколько отводите на "подумать"?
А пуркуа-бы и не па?
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Василич профи

 Сообщений: 296 |

сразу после включения света срабатывает и отключается через 10 мин после отключения... чтобы школьники накурились и затем все вытянуло
И сказал Бог: да будет свет. И сказали электрики: А на этом можно подзаработать...
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К.З. ученик

 Сообщений: 22 |

Я только вначале понял " Дорогой мистер Арминас", дальше сумбурно )))))
Ну а раз дорогой - значит делай что хочешь, руками маши, прыгай, девушек в гости води, кури, пей сколько хочешь, все равно свет тебе будет и тепло
Своих не бьет.
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Al Ща профи

 Сообщений: 3291 |

2Василич:
чтобы школьники накурились и затем все вытянуло- тогда уж лучше сигнал на сплинклерную систему подавать - чтобы гасила сигареты на корню...
А пуркуа-бы и не па?
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lehn ученик

 Сообщений: 29 |

зачем на сплинкер , лучше свето-звуковой сигнал к рабочему месту злобной вахтерши или в кабинет завуча))
We keep power under control
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Бригадир профи

Сообщений: 478 |

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