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C654M-E (12/08) 5
Installation
The following items are supplied:
Qty Description
1 WCS Series Power Supply
4 Output fuses (fuse model)
2 Main fuses (fuse model)
2 Spare output fuses (fuse model)
To install a WCS Series Power Supply, perform the following steps:
1. Decide where to install the unit.
2. Open the lid by removing the screw and twisting the latch.
3. Drill holes in the mounting surface. Use the unit as a template.
4. Attach the unit securely with four fasteners (not supplied) that are at least 1-inch (2.5 cm) long and 1/4-inch (0.64 cm) in diameter. You can
use fasteners up to 5/16-inch (0.80 cm) in diameter.
5. Remove the necessary hole plugs by unscrewing their wing nuts.
6. Install 3/4-inch (1.9 cm) watertight conduit fittings (conduit fittings not provided).
INPUT CONNECTIONS
Units that require a main fuse leave the factory without the fuse installed because they can support both 120 and 240 input voltages. Therefore,
you must install a fuse before operating the unit. Refer to Table B to determine which fuse to install.
*Model is not equipped with a primary input fuse;
transformer is protected with thermal breaker.
1. Verify that the on/off switch inside the box is OFF.
2. Install the appropriate fuse in the holder directly below the power switch. Find the fuse in the spare fuse holder. (Extra fuses are supplied
for spares.)
3. Set the input voltage selector switch inside the box to the appropriate line voltage. The switch is set at the factory for 120 VAC line voltage.
4. Attach the 120/240 input wires to the high voltage input connector.
a. Attach the AC high wire to the AC input terminal marked with an “L” (for line).
b. Attach the AC low wire to the AC input terminal marked with an “N” (for neutral).
c. Attach the ground wire to the stud marked with the ground symbol.
WARNING: Pelco will not be liable for any damages resulting from incorrect wiring or improper loading of a WCS Series Power Supply.
Table B. Fuse Determination Table
Main Fuse Value Required Depending on Line
Voltage
Line Voltage WCS4-20 WCS4-20B
120 VAC 5 A N/A*
240 VAC 3 A N/A*
WARNING: If 240 VAC power is applied with the selector switch set to 120 VAC, the main fuse will blow (fuse model) or the thermal
breaker will open (breaker model).