ETA Systems SM5505 - Manual (Page 18)

Conditioned Power Center 18
5.3 Outer Panel Removal
The side panels, the back panel, the top panel and the front panel have all been designed for easy removal prior
to installation. The side panels must be removed first. Turn the quarter turn fasteners counterclockwise and
remove the side panels.
A bonding strap is attached to the bottom of each side panel with a hand fastener
and lock-washer. The bonding strap electrically grounds the side panel to the
frame during normal operation. This bonding strap must be disconnected for
complete removal of the side panel taking care not to misplace the fastener and lock-washer. It is
extremely important that the bond strap be reconnected to the side panel when the side panel is
replaced. Failure to reconnect the ground strap may result in an electrical shock hazard in the event of
an electrical fault.
The back panel, top panel and front panel are held in place by threaded fasteners, which are accessible once the
side panels have been removed. Removing these fasteners will allow the top, back, and front to be removed.
5.4 Alternate Conduit Landing Locations
In the event, it is not possible to land conduits on the power conditioner top, rear, or bottom panels, consult with
the manufacturer. Although less desirable, alternate conduit landings can be accommodated. The manufacturer
can provide information, detailed drawings, and instructions for landing conduits at alternate locations.
5.5 Main Input Circuit Breaker
Depending on the primary voltage configuration of the power conditioner’s isolation transformer, the conditioner
will be equipped with one of two types of circuit breakers. If the power conditioner uses a single voltage primary
(i.e. 480 volts) the power conditioner will come equipped with a circuit breaker rated at the proper amperage to
accommodate the power conditioner’s power rating at the specified input voltage. If the isolation transformer has
a primary voltage configuration capable of accepting multiple input voltages through the use of changeable taps,
the power conditioner will be equipped with a programmable circuit breaker. Prior to being shipped, a tag is
attached to the main circuit breaker of each power conditioner on the front panel. The tag indicates the
transformer primary configuration, breaker type, and input voltage setting. Based on the type of circuit breaker
shown on the tag, consult either Sec. 5.5.1 or 5.5.2 for more information
5.5.1 Fixed Input Circuit Breakers
Before beginning installation, check the tag on the circuit breaker. The power conditioner has been
manufactured and shipped according to the input voltage specified at the time the order was placed. If the input
voltage information shown on the tag does not match the voltage available at your site and if the tag indicates the
transformer in the power conditioner has a single voltage primary, then the input circuit breaker will have a fixed
value. Under the circumstances, you will not be able to proceed with the installation. Contact the company who
Section 5 - Installation