Toa VX-3000DS CE-GB - Manual (Page 25)

25
Battery Connection
Clean Contacts
Take care that the connection terminals are clean before connecting
the cables. Clean them if necessary.
Ensure that the battery cables are inserted correctly into the battery
terminals of the VX-3000DS and the screws are fastened tight.
Add one crown gear (toothed washer) on one side of the battery’s
terminal connection.
Secure Battery Connection
When no AC-mains is connected to the VX-3000DS, then the batteries can be connected without sparks. Be
careful when connecting the batteries to the VX-3000DS – the battery can easily provide some hundreds up to
thousand amperes in case of a short circuit! This can destroy many devices easily. Connect the battery cables
in the order described below. When disconnecting the batteries, then proceed in opposite order. Doing so will
cause no damage of devices when accidently touching metal parts of the cabinet or device with the battery
cables.
1. Connect the plus terminal of the battery to the VX-3000DS (check on correct polarity and fixation in the
battery cable clamp at the VX-3000DS).
2. Connect the minus terminal of the battery with the plus terminal of the second battery.
3. Connect the minus terminal of the second battery to the VX-3000DS.
(Steps 1 and 2 can be proceeded in opposite order)
Hints on Preservation
Check the batteries on cleanliness and clean if necessary at every maintenance and inspection of the voice
alarm system. Be careful using solvents! We recommend to read the instructions for the batteries carefully.
Organic solvents must never be used!
Use of other batteries than the recommended models
When not using the certified batteries, then the following specifications shall be provided by another battery
model:
- charging voltage of the full battery at 25°C: 13.65 V (±0.15 V) *
- temperature coefficient of the charging voltage: -20 mV/°C (-3.3 mV/°C per cell)
- internal resistance of the battery: < 0.01 Ω
Temporary Shutdown of the Voice Alarm System
When shutting down the system longer than one month, then disconnect the batteries.
Figure 2: Connection to the battery
terminal with a crown gear