WAGNER TITANUS User Manual

TITANUS MICRO·SENS
®
Pipe Design
MS_A_04-en-e Data: 01/09 4 – 35
4.4 Power Supply
When sizing the power supply, the signal-ready status of the danger
alarm equipment and the alarm case are considered. When the plant is in
the signal-ready status, the power supply must deliver the idling current
to the air sampling smoke detection systems and guarantee charging of
the stand-by accus in accordance with DIN VDE 0833, Part 1
P18F
19
PT.
The following formulae apply in case of alarm:
Power calculation In case of alarm the current is calculated by the following formula:
Room protection
.,..,
)(
maxypowersupplareamaxquiescentareamaxalarmroomtotal
InnInII ≤−+⋅=
Equipment protection
powermax.quiescentalarmequipmenttotal
InnInII ≤−+⋅= )(
The current for charging the accus is calculated by the following formula:
Charging current
24
8,0
nominal
charging
K
I
⋅
≈
max.y,powersupplchargingquiescentequipmenttotal
IInII ≤+⋅=
,
I
total = total current of all connected air sampling systems [A]
Ipower supply, max. = max. supply current of the power supply unit [A]
n = total number of all air sampling systems connected to a
power supply unit
n
max area = total number of all air sampling systems in the area with
the highest power consumption
I
alarm
= alarm current of an air sampling system [A]
I
quiescent
= quiescent current of an air sampling system [A]
K
nominal = nominal capacity of the accumulators [Ah]
I
charging = charging current of the accumulators (within 24 h 80% of
the nominal capacity) [A]
The higher figure of the total current calculated (I
total
) is used to design
the power supply!
The power consumption of the TITANUS MICRO·SENS
P
®
P
can be found in
Chapter 3, "Technical Data".
TP
19
PT 80% charging in 24 hours
INSTRUCTION

WAGNER TITANUS Specifications

General

Power Supply	24 V DC
Operating Temperature	-20°C to +60°C
Alarm Output	Relay contacts
Certification	VdS, EN 54
Humidity Range	10% to 95% (non-condensing)