PSN-1000 POWER EXPANDER-5403599-REV C-04/17
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Figure 2
Separation of Circuits - Power Limited, Non-Power Limited, High Voltage Wiring
The main AC power connection is considered high-voltage and non-power limited. Battery conductors, and
the alarm, supervisory, and trouble relays are non-power limited. All remaining circuits are low-voltage, power
limited connections.
Proper separation must be maintained between the circuits listed above. All separations in the different wiring
must be maintained by at least 0.25 inches and the wire insulation must be for the higher voltage.
In the enclosure there are sufficient knock outs located around the periphery of the cabinet to allow the installer
to maintain separation between power limited and non-power limited connections. The main AC power connec
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tion should be made on the left side or top left of the cabinet.
Notification Appliance Circuits (NACs)
The PSN-1000 is equipped with six NAC circuits. Each of the circuits is rated for a continuous 3 amps at 24
VDC. The outputs are supervised and regulated. The NACs reverse polarity upon activation and the board and
illustrations are marked accordingly.
The NAC circuits can be configured for Class A operation. Class-A operation is accomplished by using a pair of
NAC circuits. Therefore, the PSN-1000 can provide 3 Class A circuits, each rated for a continuous 3 amps at 24
VDC. The outputs are supervised and regulated.
NAC circuits are power limited and the type of output is selectable. The NACs may be configured for strobe
synchronization with Potter/AMSECO, Wheelock, Gentex, or System Sensor strobe devices as shown compat
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ible in this document and the installation instructions.
The maximum impedance is a function of the load being applied to the circuit. In order to calculate the maxi
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mum impedance as follows
(Alarm Current of Notification Appliances) X (Wire Resistance) < 3 volts.
The NAC circuits may be configured for Class A, Style Z or Class B, Style Y.
The panel has ground fault detection on the NAC circuits. The impedance to ground for ground fault detection is
0 ohms.
BATTERY
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+
12 V
Battery
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+
12 V
Battery
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+
