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Difference Between Grade2/grade 3 Door Contacts


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Guest anguscanplay
Posted
But i thought we were discussing G3?

But re tampering of BT joint, where would you stop?

As a tool is required to disconnect the block it isnt tampered, if the line was disconneted at the block, to dp, the pole etc the panel will report a line fault. Same with IP as long as a tool is required then its ok, what you cant do is use a std cat 5 socket and patch lead as no tool is req to disconnect. There is a whole guide on signalling connection location etc coming from the BSIA. Ie no comms in entry routes etc

But again this is all only G3, G2 as a low to medium risk can just be plugged in which is why IMO G2 will over the next few years be accepted less and less.

but more likely someone is going to have a look inside a BT block than a door contact - thats what brought it to mind here (sorry)

Posted

agreed, but looking in the block or the dp or the road cabinet etc is fine. If its disconnected a line fail would be detected. While i used to think personally that blocks should be secure etc then you think about the rest of the bt network and tampering the one adj panel is pointless unless your gonna do the lot ie all the way back to exhange. Thats why redcare and its varients/competing versions, is so popular

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Posted
they are old Grade 3 ones then, from before the reg change, cqr by any chance?

So there is an old and new Grade 3 !!! :angry2: Yes they are cqr type, are they still acceptable? The rules seem to be changing all the time. Where can i find the rules/document for grade 2/3 systems, i cant seem to find much on the net. The national company i work for have provide this info to all engineers but there seems to be alot more to this.

Grade 2

user must allow Engineer access

4 digit codes are allowed

12hr battery back up

max entry time 45 secs

set indicators max 180 seconds

system to be set by, contact set, p.t.s, external reader,chubb lock or ARC

Linefault/network fail should indicate on keypad

code/fob to display faults

Grade 3

user must allow Engineer access

5 digit codes must be used

12hr battery back up

max entry time 45 secs

set indicators max 180 seconds

system to be set by, contact set, p.t.s, external reader,chubb lock or ARC

Linefault/network fail should indicate on keypad

code/fob to display faults

panel to perform load test on all batteries

motion sensors to report ant-mask

back tampers to be used on motion sensors

Posted

its a start that but yes there is a lot more to it than that. The only way to be sure is you will need copies of the current std's

There are many parts to 50131 and you will need them all but you could start with part 1.

The reason for the old and new G3 is there was a dual running period using the old ones, that ran out a while ago.

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Guest anguscanplay
Posted
So there is an old and new Grade 3 !!! :angry2: Yes they are cqr type, are they still acceptable? The rules seem to be changing all the time. Where can i find the rules/document for grade 2/3 systems, i cant seem to find much on the net. The national company i work for have provide this info to all engineers but there seems to be alot more to this.

Grade 2

user must allow Engineer access can be a on permenant allow

tamper required on all detection devices

4 digit codes are allowed

12hr battery back up only if mains fail signalled

max entry time 45 secs

set indicators max 180 seconds

system to be set by, contact set, p.t.s, external reader,chubb lock or ARC or timed

Linefault/network fail should indicate on keypad

code/fob to display faults

Grade 3

user must allow Engineer access as above

5 digit codes must be used 5 digit?

12hr battery back up as above

max entry time 45 secs

set indicators max 180 seconds except on an external device - no limit

system to be set by, contact set, p.t.s, external reader,chubb lock or ARC

Linefault/network fail should indicate on keypad

code/fob to display faults

panel to perform load test on all batteries should do this at grade 2

motion sensors to report ant-mask

back tampers to be used on motion sensors

TBH no one ( and i mean no one) actually knows what the regs say, maybe that will change when they are finally issued

Posted
er.

Yes they do gus. And they are issued

They you go, two posts two different views :D

TBH no one ( and i mean no one) actually knows what the regs say, maybe that will change when they are finally issued

Timed set and permanent engineer access?

also on the subject of grade 3 contacts what a pain in the butt they are. getting the distance of the gap right, getting the magnet the right way up, making sure the tamper is closed, man :( old contacts 2mins, grade 3 15-20 mins

Guest anguscanplay
Posted
They you go, two posts two different views :D

told you didnt I............ James only sees what James wants to see

Timed set and permanent engineer access?

yeah - you can have a G2X - that doesnt need to be user action setting

the regs allow for the user to autherise the engineer once for life

also on the subject of grade 3 contacts what a pain in the butt they are. getting the distance of the gap right, getting the magnet the right way up, making sure the tamper is closed, man :( old contacts 2mins, grade 3 15-20 mins

try the knight plastic ones - best out of the bunch IMO

Guest anguscanplay
Posted
what the hell is a G2X ?

Grade 2notification option"X" = non signalling

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