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XCITE
1.
Introduction
The Xcite 1001P Field Test Hydraulic Power Supply is designed to fulfill the power
requirements for Xcite Series Controlled Force hydraulic Exciters and other
actuators that do not require an average flow of more than 1.2 GPM. This power
supply is completely portable and can be used in a wide variety of test
environments. It has been "human-engineered" for ease of operation and
maintenance. All control functions can be handled by a Xcite Master Controller,
enabling a single test operator to effectively run the entire operation.
2.
Theory of Operation
2.1.
Hydraulic System
A 1.2 GPM constant displacement gear pump is driven directly by a 3 HP
1800 RPM 115 VAC/ 230 VAC electric motor. At 1725 RPM the pump ports a
nominal 1.2 GPM which is directed to the pressure quick disconnects through
a 2 micron filter. A relief valve maintains a constant 3000 psi output pressure
by bleeding flow to the reservoir.
The user must be aware that when more than 1.2 GPM is demanded by
the exciter head (low frequency stoke or weak structure stiffness at higher
frequencies), the pump pressure will drop. For maximum force capability from
the system, the stroke must be limited to ranges which allow the pump to
maintain 3000 psi pressure.
A time delayed cooling fan provides air flow across a heat exchanger which is
in the return line to cool the hydraulic fluid returning from the exciter head.
For ease of filling and draining of the reservoir before transporting the power
supply, a transfer pump is used. When the ball valve is in the FILL direction, fluid
is pumped from the reservoir fill hose directly into the reservoir. See Drawing
B-30220 - Item #26 In the EMPTY direction, hydraulic fluid is pumped out of the
quick disconnect nipple which is removed from the top of the reservoir for the
emptying operation. (See photo below.)
Field Test Power Supply
FTPS - 1
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