RISCO Group Gardtec GT600 - Manual (Page 105)

Page 103
GT 600 / 601 Engineer’s Reference Guide
User Names
Custom Screen
Non-Volatile Memory
Quiescent Currents
Control Panel plus Keypad
Log Size
Time & Date
9 Characters
32 Characters
Yes
150mA@12V d.c
GT600, 500 Event Log
GT600, 63 Modem Log
GT601, 752 Event Log
GT601, 128 Modem Log
Log & Display
*Power Supply Rating
It should be noted that the Plastic GT 600 Control Panel has 1 Amp available for the
full system. However, for the purpose of compliance to EN and PD6662 standard, the
capacities of the power supply have to be specified differently.
For a Grade 2 system you have 72 hours to charge the battery. With the Plastic GT
600 Control Panel, 90mA is available for battery charging. This defines a theoretical
maximum standby battery capacity of 8.0Ah and a maximum of 666mA available for
system power.
If a smaller capacity battery is used then the rating has to be reduced accordingly.
For example: If a 7Ah battery is used it will recharge in 72 Hrs and will theoretically
provide 910mA (1000-90mA) for the system. However, the supply rating for that
system under PD6662 is still 7.0Ah/12hrs = 583mA. Sounders, detectors and other
auxiliary items should be included when calculating current drawn by the system.
Any damage caused through overloading the Control Panel Supply will not be covered
by the warranty.
We recommend that additional power supplies are used to supply detectors on long
cable runs.
Note: A GT 600 Plastic Control Panel can be configured as a Grade 2 system. In this
case the maximum standby battery capacity is 2.7Ah which determines a PD6662
rated supply of 225mA. Therefore an external supply would have to be used to power
the non CIE parts of the system.
Note: For a Grade 3 system where the standby battery current is sufficient for 12Hr
standby, the system must be capable of reporting mains fail to the ARC.