Guest nikki Posted May 28, 2004 Posted May 28, 2004 Hello Could anyone tell me if the readings im getting are right? Veritas Excel panel Battery 2.8Ah zone 1 magnetic contacts Tamper 0.02 Ohms zone 2 PIR Tamper 0.6 Ohms zone 3 PIR Tamper 0.6 Ohms Battery Charging Voltage 13.6Vdc Battery Charging Current 2.8mA Battery Current Unset 140mA Battery Current Alarm 5.5mA Power Supply Unset 18.2Vac Power Supply Alarm 17.5Vac Also how do you test tamper if you are using double pole? And what is the correct way to test resistance in a zone?
Service Engineer Posted May 28, 2004 Posted May 28, 2004 Hi Nikki, Tamper resistances are probably correct. Battery Charging Voltage 13.6Vdc --Sounds OK. Battery Charging Current 2.8mA --ok if battery fully charged. Battery Current Unset 140mA --sounds ok. Battery Current Alarm 5.5mA -- Wrong would of expected 350mA + Power Supply Unset 18.2Vac -- no need to measure AC voltage but looks about right. Power Supply Alarm 17.5Vac -- no need to measure AC voltage Also how do you test tamper if you are using double pole?And what is the correct way to test resistance in a zone? Zone and Tamper circuits are best checked by removing the cables from the control panel terminals and placing your meter probes across the zone/tamper wires. Ensure powered detectors are still powered up while testing. Tamper resistances should be quite low, usually between 1 and 4 ohms dependant on the lenth of cable to the detector. ........................................................ Dave Partridge (Romec Service Engineer)
ian.cant Posted May 28, 2004 Posted May 28, 2004 Surely the battery charging current should remain relativley low as he shows in alarm? You would only get 350ma if the battery was under load?
Service Engineer Posted May 28, 2004 Posted May 28, 2004 Being a Service Engineer I had assumed he/she had disconnected the mains and was checking for the full alarm condition current draw at the battery, for which I would have expected to see a reading of 350mA+, I had assumed they had already disconnected the mains for the result achieved for the "Battery Current Unset" test which gave 140mA reading. Why would you want to check the battery current draw in alarm condition with the mains still on.. ? ........................................................ Dave Partridge (Romec Service Engineer)
Guest PeteGBR Posted May 28, 2004 Posted May 28, 2004 Global tamper should do. Zone resistances are more important.
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