Fire-Lite ECC-50/100E Emergency Command Center - Manual (Page 94)

94
Emergency Command Center Manual —
P/N LS10001-000FL-E:A 4/10/2013
Power Supply Calculations
Calculating the System Current Draw
6.3.2 How to use Table 6.2 to calculate system current draws
1. Enter the quantity of devices in both columns.
2. Enter the DC current draw where required. Refer to the Fire•Lite Device Compatibility
Document
for compatible devices and their current draw.
3. Calculate the current draws for each in both columns.
4. Sum the total current for each column.
5. Copy the totals from Column 1 and Column 2 to Table 6.3 on page 95.
Following are the types of current that can be entered into Table 6.2:
 Calculation Column 1
- The standby current load that the audio panel must support (from
the batteries) during a non-fire alarm condition and a loss of AC power.
 Calculation Column 2
- The alarm current draw that the audio panel must support (from
the batteries) during a fire alarm condition and a loss of AC power
Table 6.2 contains two columns for calculating current draws. For each column, calculate the cur-
rent and enter the total (in amps) in the bottom row. When finished, copy the totals from Calcula-
tion Column 1 and Calculation Column 2 to Table 6.3 on page 95.
Device Type
Calculation Column 1
Secondary (Battery) Power Source
Standby Current (amps)
Calculation Column 2
Secondary (Battery) Power Source
Alarm Current (amps)
Qty
X [current
draw] =
total Qty
X [current draw]
=
total
ECC-50/100 Primary Console
(Not including speaker load)
1 X [0.272]= 0.272 1 X [0.446]= 0.446
ECC-50W-25/70V
Optional Audio Amplifier Module
1
[ ]
(1 max.)
X [0.100]= [ ]
[ ]
(1 max.)
X [0.235]= [ ]
ECC-CE6 Speaker Circuit Expander [ ]
(1 max.)
X [0.020]= [ ]
[ ]
(1 max.)
X [0.189]= [ ]
ECC-LOC Local Operator Console 2 [ ] X [0.085]= [ ] [ ] X [0.100]= [ ]
ECC-RM Remote Microphone 2 [ ] X [0.050]= [ ] [ ] X [0.064]= [ ]
ECC-RPU Remote Page Unit 2 [ ] X [0.050]= [ ] [ ] X [0.068]= [ ]
ECC-50/125DA 3 [ ] X [0.012]= [ ] [ ] X [0.012]= [ ]
ECC-FFT Firefighter Telephone [ ] X[0.120]= [ ] [ ] X[0.230]= [ ]
Speakers (50 watts maximum/amplifier)
1/4 Watt [ ] X[0.017]= [ ]
1/2 Watt [ ] X[0.033]= [ ]
3/4 Watt [ ] X[0.050]= [ ]
1 Watt [ ] X[0.068]= [ ]
2 Watts [ ] X[0.132]= [ ]
Additional Current Draw from TB17 Special
Application Auxiliary Power Output
(0.5 amp maximum)
[ ] X [ ]= [ ] [ ] X [ ]= [ ]
NAC Circuit Output (2.0 amps maximum) [ ] X [ ]= [ ]
Power Supervision Relays 4 [ ] X [0.025]= [ ] [ ] X [0.025]= [ ]
AIM-1A, RSM-1A Isolators [ ] X [0.0145]= [ ] [ ] X [0.0145]= [ ]
SP-SVC Volume Control [ ] X[0.010]= [ ] [ ] X[0.010]= [ ]
Sum each column for totals Secondary Standby: Secondary Alarm:
Table 6.2 System Current Draw Calculations
1 In backup configurations, the optional amplifier draws no additional current in alarm.
2 Maximum combined total of eight (8) operator interface devices.
3 Maximum combined total of eight (8) remote amplifiers.
4 Must use a compatible, UL-listed Power Supervision Relay