Guest advent750 Posted November 8, 2004 Posted November 8, 2004 The transformer has two 12v tappings, how much voltage can be put into the board and what is the required amount. I thought the 12v with a high va would be ok.
Service Engineer Posted November 8, 2004 Posted November 8, 2004 I think that doubling the tappings to get 24Vac could probably blow the regulator, because after rectifying & smoothing it`ll be nearer 36VDC into the regulator. There aren`t many regulator`s that will tolerate that voltage input. Best bet is to replace it with an 18VAC TX of simillar rating. ........................................................ Dave Partridge (Romec Service Engineer)
Brian c Posted November 8, 2004 Posted November 8, 2004 The transformer has two 12v tappings, how much voltage can be put into the board and what is the required amount. I thought the 12v with a high va would be ok. 30792[/snapback] The manual specifies 18Vac. i don't like to see them much over 20Vac on any panel. 24Vac (across both tappings) may be ok, but, I think the panel struggling with under or over voltage will cause problems in the end. If you don't know......ask.
Brian c Posted November 8, 2004 Posted November 8, 2004 Best bet is to replace it with an 18VAC TX of simillar rating. 30793[/snapback] ditto If you don't know......ask.
Guest advent750 Posted November 8, 2004 Posted November 8, 2004 Ok I will try and get an 18v transformer and change that. One more thing can anyone recommend anything to fit at the end of the driveway which is approx 100yds from the house to indicate when anything comes onto the drive. Prefer a wireless option at the moment.
Guest advent750 Posted November 9, 2004 Posted November 9, 2004 What size of battery would you recommend fitting. I was only replacing what was originally there, as fitted by a Professional company.
Service Engineer Posted November 9, 2004 Posted November 9, 2004 I dont see the problem in fitting a 7AH battery with this panel, its charging circuit can easilly cope with it. We fit 7AH batteries as standard in most panels we fit. Also the cost of the battery and TX would still be less than the price of most companies callouts, and his time is free so no charge for that. Ok I agree that most engineers wouldn`t have changed the TX in the 1st place, so that was a needless cost. ........................................................ Dave Partridge (Romec Service Engineer)
Paul Giles Posted November 10, 2004 Posted November 10, 2004 Pete, most if not all endstations are capable of 7ah. I agree the likes of 9448+ etc can only handle 2.1 ah but the books clearly state the panels capacity of each one, some now up to 17ah. Paul PG Security Systems Somerset SSAIB Certificate of Merit Installers. www.pgsecurity.co.uk
Monteey Posted November 10, 2004 Posted November 10, 2004 I was under the impression that the new EN regs will mean that we will all have to fit bigger batteries to accomodate the required longer standby times hence the reason why panel boxes have got bigger while the pcbs get smaller. Mark Hawks Ex BT Openreach Field Service Now Self employed telecom and data engineer www.mphtelecom.co.uk Also back doing sub contract work in the security industry. Retained firefighter Devon and Somerset Fire and Rescue
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