Fire alarm system

[headingdown]

Why is so important to maintain fault monitoing for the fire system.

[Wiz]

Why is so important to maintain fault monitoing for the fire system.

Is there any specific type of fault monitoring you are enquiring about? Zone? Sounder? Power Supply?

What do you mean by maintain? Do you mean keep functioning due to servicing? Or, maybe, as in the case of non-addressable zone circuits maintained even after a device might be removed? etc. etc.

[Benzerari]

Why is so important to maintain fault monitoing for the fire system.

I think it is obvious to keep the system under normal working operation by checking its functioning in a service visit, all sort of faults can be hidden in some how and the system may show healthy, the service visit I think is normally for this purpose...

I used to see in the base i.e. the negatives connected together and positives too, instead of L1in and L1out... where the head removed would normally be monitored...  or fitting an EOL in the zone terminal to hide open circuit in the zone.... and many others...

For what so ever... the system has to be then brought back to its normal working order ...

[kurnal]

Headingdown
As you see from the previous posts there are people willing to help answer your question but need to know the level of information you are seeking. As I asked before- is this school, college, university or a work related enquiry?

[headingdown]

First of all, thanks a lot you guys.
I have to tell you this is my part of lab report its quite difficult for me to find out the solutions
I am just a plumber and a part time evening student so I need some pro advices,
My lab topic is ~ demonstration of internal fault detection of battery and mains supply failure.
I cant find out the solution can anyone help me?

[Chris Houston]

It's your choice if you want to get through your course by posting your quetions on here, but I would encourage you not to duplicate the topics you start.

I would advice you further that if you fully explain what information you are looking for then you will get a better reply.

Is the answer to your question perhaps "it is important to monitor for faults on fire alarm systems because if an undetected fault develops and the system fails to work properly, a fire might not be detected and this coudl lead to death or injury of occupants"? or are you looking for something more technical?

[headingdown]

It's your choice if you want to get through your course by posting your quetions on here, but I would encourage you not to duplicate the topics you start.

I would advice you further that if you fully explain what information you are looking for then you will get a better reply.

Is the answer to your question perhaps "it is important to monitor for faults on fire alarm systems because if an undetected fault develops and the system fails to work properly, a fire might not be detected and this coudl lead to death or injury of occupants"? or are you looking for something more technical?

Yes, you are right may be I am wrong
so please tell me more about technical.
I think I can learn a lot from here.

[Wiz]

First of all, thanks a lot you guys.
I have to tell you this is my part of lab report its quite difficult for me to find out the solutions
I am just a plumber and a part time evening student so I need some pro advices,
My lab topic is ~ demonstration of internal fault detection of battery and mains supply failure.
I cant find out the solution can anyone help me?

I am assuming that you are talking about power supplies for fire alarm systems for buildings (as opposed to dwellings) if so, the precise requirements of the performance of such power supplies are detailed in the document BS EN 54-4.
In basic terms the monitoring requirements for the power supply include, mains supply failure, mains supply outside described limits, battery disconnection, charge failure and a failure of any protective device within the power supply.
How this monitoring is achieved is not specifically described in the document and is left for equipment manufacturers to meet the recommendations as they see fit. Each may go about it in a different manner. In all cases the electronic circuitry to provide the monitoring will be reasonably sophisticated and would require a good knowledge of electrical and electronic principles to understand how it works.

[headingdown]

First of all, thanks a lot you guys.
I have to tell you this is my part of lab report its quite difficult for me to find out the solutions
I am just a plumber and a part time evening student so I need some pro advices,
My lab topic is ~ demonstration of internal fault detection of battery and mains supply failure.
I cant find out the solution can anyone help me?

I am assuming that you are talking about power supplies for fire alarm systems for buildings (as opposed to dwellings) if so, the precise requirements of the performance of such power supplies are detailed in the document BS EN 54-4.
In basic terms the monitoring requirements for the power supply include, mains supply failure, mains supply outside described limits, battery disconnection, charge failure and a failure of any protective device within the power supply.
How this monitoring is achieved is not specifically described in the document and is left for equipment manufacturers to meet the recommendations as they see fit. Each may go about it in a different manner. In all cases the electronic circuitry to provide the monitoring will be reasonably sophisticated and would require a good knowledge of electrical and electronic principles to understand how it works.

Thanks a lot but wht is the main point to provide this system?
Is it to see if any fault lights are showing how do you know your system is healthy?

[kurnal]

The Health and Safety ( Safety Signs and Signals) Regulations require that any illuminated safety sign or any safety signal that relies on a power supply must have a back up power supply so that the sign or signal still works if the mains power fails. Fire alarms and emergency lighting have a battery backup supply. They also have a light or LED on the panel to show that the main power supply is healthy and sometimes more sophisticated warnings to indicate faults have occurred.

The mains power may fail as a result of a fuse blowing or even someone accidentally isolating the supply to the alarm. If you assume that the fire alarm battery will operate the system for say 48 hours and then be flat, what would happen if there were no fault monitoring systems and nobody had the job of checking the panel say on a daily basis to check for faults?

[Chris Houston]

Judging by the email address, Headingdown is not UK based, but Hong Kong based, so not sure if UK regulations are relevant.