
GR-750x series
Control panel for addressable emergency
luminaires
Document number: 923750400_09_007
Date: 3/5/2022
Page: 18 of 71
[18]
3.2.3 Connecting the mains power supply cables (220-240V
AC
)
IMPORTANT
1. Any installation, repair or electrical equipment maintenance operation must be executed
with both mains power supply and batteries disconnected.
2. All mains power cables must be connected before connecting the batteries and powering
up the system.
3. The mains power fuse is located on the power management board and is rated
T2A/250V (slow blow).
4. The battery protection fuse is self-resettable, rated 900mA and is soldered on the power
management.
The power supply cable must be a 3−core double insulated wire that meets the voltage and current
requirements of the panel (Table 1 - Technical specification table).The ground terminal (marked with
on the
power management board)
must be
connected to the installation’s ground (protective earth) to ensure proper
and safe operation of the system.
Figure 7
3.2.4 Connecting/Replacing the batteries
The interior of the control panel has space suitable to hold two 12V lead-acid batteries (Pb) with nominal
capacity of 7Ah, 9Ah, 12Ah or 15Ah. Both batteries must be the same model, type and have the same
nominal capacity.
The two batteries must be connected in series. Three wires are provided to connect them, two of them are
pre-installed on the power management
board’s battery terminals. The red wire must be connected to the
positive terminal (+) of the first battery. The black wire must be connected to the negative terminal (-) of the
second battery. A jumper cable is included in the accessories bag, to connect the two other terminals
(negative terminal (-) of the first battery to the positive terminal (+) of the second battery), like it is shown in the
figure below:
Figure 8
In case of battery replacement, both batteries must be changed with two new identical batteries. Do not
discard the old batteries in common waste bins. The batteries must only be disposed of in accordance with
the WEEE directive.