44
en | Planning
AVENAR panel
2022-07 | 5.0 | F.01U.378.910
System manual
Bosch Sicherheitssysteme GmbH
Standby Current Calculation to EN 54-4
I
max, Standby
=
C
Batt
- I
Alarm
x 0,5h
t
Standby
I
max, A
= 6A -
18h
C
Batt
(1)
(2)
I
nom
= min
[
I
max, Standby
, I
max, A
]
(3)
Formula (1) describes the maximum system current to guarantee a particular back-up time
(Imax,Standby).
Formula (2) describes the maximum system current taking into account simultaneous battery
charging (Imax.A).
The system standby current (Inom) to be selected is calculated from the lower of the two
maximum system current values, as shown in the formula (3).
Parameters:
–
t
Standby
= back-up time in hours
–
I
Alarm
= maximum alarm current (Imax,B)
–
C
Batt
= battery capacity in Ah
Possible capacities (CBatt):
–
24 - 26 Ah or 36 - 45 Ah with 2 batteries
–
48 - 52 Ah or 72 - 90 Ah with 4 batteries
3.10
Protective earth and equipotential bonding
Country-specific standards and guidelines must be considered, e.g. DIN VDE 0100-540,
particularly with regard to the protective function of the electrical safety. These must be
observed by qualified personnel.
4
The UPS 2416 A power supply is a class I electrical appliance. Protection earth is
required.
4
Protective earth must be applied to the corresponding connection point of the copper rail
in the mounting frame. The protective earth must have a safety connection to the
electrical earth (ground). In addition to the protective function of the electrical safety,
this also fulfills the functional requirements of protecting the system against interference
voltages and electromagnetic disturbances.
