GE Security Vigilant VS1 User Manual

Appendix B: Worksheets
200 Vigilant VS1 and VS2 Technical Reference Manual
The source voltage is the theoretical operating minimum for the power supply, and is
calculated as 85% of 24 volts.
The load factor is a measure of how the power supply voltage reacts when a load is
applied. The load factor measures the voltage drop per ampere of current drawn by
the load.
The power type reflects the type of power supplied to the NAC terminals at minimum
voltage. The current draw of notification appliances can vary substantially with the
type of power supplied: full-wave rectified (VFWR) or direct current (VDC). It is
important to know the power type at minimum terminal voltage.
You’ll need to calculate the following values relating to your power supply and to the
NAC circuit current. These are:
• Minimum voltage
• Voltage drop
The minimum voltage is the lowest voltage measured at the NAC terminals when the
power supply is under the maximum load for that circuit (i.e. for the appliances that
constitute the NAC.)
The voltage drop is the difference between the minimum voltage and 16 V. This value
is for use with the worksheet only.

GE Security Vigilant VS1 Specifications

General

Brand	GE Security
Model	Vigilant VS1
Category	Control Panel
Language	English