Det-Tronics EQP Fire and Gas Detection/Releasing System User Manual
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3-6
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EQP21X0PS(–X) Power Supplies
The EQP2110PS(–P) and EQP2120PS(–B) Power
Supplies are used in pairs where the primary source of
input supply is connected to one and the secondary
source is connected to the other. Each power supply may
be backed up by another power supply of the same
model or by a DC-DC converter (see Figures 3-23A, B
and C for available configurations). A maximum of eight
power supplies operated in parallel can be connected to
each input supply. Both the primary and secondary sets
must be individually capable of operating the system
without the other supply. The secondary source is
required to be continuously powered.
The use of these supplies is based upon acceptance
of the local AHJ of the secure supply system that
provides the secondary supply. These supplies must
be used in a redundant configuration, where one
bank of supplies is fed from the primary source and
the other bank from the secondary source. Both
primary and secondary supplies shall be continuously
available and both rated for a minimum 100% of load.
Refer to Table 3-3B for power supply ratings.
IMPORTANT
The EQP21X0PS(–X) Power Supplies provide
EQP System devices with power from input
supply 120 to 220 V ac. Use of this power supply
does not provide the source of the secondary
supply such as secondary source batteries, their
supervision or charging, or UPS. Per NFPA
72-2010 requirements, such power supply
related requirements must be separately
provided for and be accepted by the local
Authority Having Jurisdiction (AHJ).
EQP2410PS(–P) Converter
The EQP2410PS(–P) Converter converts the DC input
voltage to an adjustable, controlled and galvanically
separated 24 Vdc output voltage. The converter is
always connected to the secondary source.
Standby Current
Standby Time*
Standby Amp Hours
X
=
24 Hours
Alarm Current
5 Minute Alarm Time*
Alarm Amp Hours
X
=
0.083 Hours
Sum of Standby and Alarm Amp Hours
=
Multiply by 1.2 (20% Safety Factor)
X
Total Battery Amp Hour Requirement
T0014B
* FM MINIMUM REQUIREMENT FOR EXTINGUISHING SYSTEMS
IS 24 HOURS STANDBY TIME AND 5 MINUTES ALARM TIME.
Table 3-4—Backup Battery Requirements for Automatic Release of Extinguishing Systems Except Deluge
Standby Current
Standby Time*
Standby Amp Hours
X
=
90 Hours
Alarm Current
10 Minute Alarm Time*
Alarm Amp Hours
X
=
0.166 Hours
Sum of Standby and Alarm Amp Hours
=
Multiply by 1.2 (20% Safety Factor)
X
Total Battery Amp Hour Requirement
T0040B
* FM MINIMUM REQUIREMENT FOR DELUGE SYSTEMS IS
90 HOURS STANDBY TIME AND 10 MINUTES ALARM TIME.
Table 3-5—Backup Battery Requirements for Deluge and Pre-Action Applications