Kidde VS1 - Equation method

Appendix A: Panel specifications
P/N 3102351-EN • REV 005 • ISS 28DEC18 187
VS1 panel VS4 panel
Loop circuit
Maximum loop resistance: 66 Ω
Maximum loop capacitance: 0.5 µF
Communication line voltage: Maximum 20.6 V peak-to-peak
Operating current (fully loaded loop)
Stand by: 55 mA/45 mA
Alarm: 125 mA/115 mA (this does not include two-wire smoke modules)
Circuit current: 0.5 A max.
Max. resistance between isolators: Limited only by overall wire run lengths
64 isolators maximum per loop (total both isolator bases and modules)
Batteries
Type: Sealed lead acid
Voltage: 24 VDC
Charging current: 2.47 A max.
Amp hour capacity: 26 Ah
Standby operation: 24 hour or 60 hour
Placement: Up to two 10 Ah batteries will fit in the VS1
control panel cabinet and two
18 Ah batteries will fit in the VS4 control panel cabinet. If larger batteries are
required, you must use an Edwards battery cabinet.
SA
-DACT dialer Phone line type: One or two loop-start lines on a public, switched network
Phone line connector: RJ-31/38X (C31/38X)
Communication formats: Contact ID (SIA DC-05)
Operating current
Standby/Alarm: 41 mA
Max.: 100 mA
FCC registration number: GESAL01BSADACT
Industry Canada Registration number: 3944A-SADACT
Ringer equivalence number: 0.1B
Ground fault impedance
0 to 5 kΩ
Alarm contact
Class E, Form C N.O. 24 VDC at 1 A (resistive load)
Trouble contact
Class E, Form C 24 VDC at 1 A (resistive load)
Supervisory contact
Class E, Form A N.O. 24 VDC at 1 A (resistive load)
Environmental
Temperature: 0 to 49°C (32 to 120°F)
Relative humidity: 0 to 93% noncondensing
Terminal rating
All terminals rated for 12 to 18 AWG (0.75 to 2.5 mm²)