52
Eaton PDI WaveStar TFA Static Transfer Switch Installation and Operation Manual P-164001113—Rev 01
c.
Zero volts between the phase C poles on the line side of all input MCSWs.
d.
Zero volts between the phase A poles on the line side of all bypass MCSWs.
e.
Zero volts between the phase B poles on the line side of all bypass MCSWs.
f.
Zero volts between the phase C poles on the line side of all bypass MCSWs.
6.
Perform initial bring-up, which
must
be performed in Bypass Mode:
a.
Close Bypass 1 MCSW and verify output voltage is present.
b.
Open Bypass 1 MCSW; close Bypass 2 MCSW; and verify output voltage is present.
66..11..11
C
Coom
mm
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Acccceeppttaannccee TTeessttiinngg
As part of acceptance testing, the STS should pass a Performance Test at 80% load minimum. A Eaton service
technician will perform or witness acceptance testing.
66..11..22
N
Noottee oonn S
STTS
S TTeessttiinngg aanndd C
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mm
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Meetthhooddoollooggyy
The Eaton PDI WaveStar TFA Static Transfer Switch has built in redundant logic and transfer abilities. The
primary logic is connected to the line side of input Molded Case Switches (MCSW) and output bus in the static
switch to detect upstream events – this then allows the switch to sense and transfer sources. The primary
logic has embedded software that controls both the low inrush algorithm and the concurrent recording of any
switch transfer events with its real-time wave form capture feature. The secondary logic is connected to the
load side of the input MCSWs in the static switch and is used to trigger the switch to transfer upon opening of
the input MCSWs along with the primary logic.
When performing transfer testing / operation of the static switch, the recommended method is to perform
transfers automatically by using the front touch screen / graphics on the static switch or alternatively to
manually use the redundant operation interface panel. When performing outage testing, the preferred method
is to perform any outage operation by opening the upstream breaker suppling power to the either source on the
static switch. This simulates a true site event and allows the primary logic to detect a real event upstream of
the switch. If an outage is performed by opening the MCSWs at the static switch, the switch will still fail safe
and transfer, however some of the primary logic has been bypassed and thus, this is not the recommended
method for initiating an outage.
When connecting load banks to the static switch to test the switch operation under load conditions, it is
important that the fan logic on the load banks is connected to a separate power source. The reason for this
method is that in some cases, the load bank’s fan logic may not sustain power during the 4 ms to 8 ms transfer
of the switch – this may cause the load banks to drop power during an event that is seen by the switch to be
normal and recorded on the switch as a "good" transfer event as per the design of the switch.
66..22
A
Addddiittiioonnaall IInnssttaallllaattiioonn R
Reeqquuiirreem
meennttss
After Startup and Acceptance Testing, the following tasks should be completed:
1.
Connect and configure communications, including dry contacts, if not already done. See paragraph
Customer Communications Connections
2.
The TFA STS should be set up in three categories:
a.
Administrative setup: assign user PINs, passwords, and access levels. See paragraph
b.
Operational setup: configure transfer parameters. See
c.
Network setup: configure networking options and addresses. See paragraph
Summary of Contents for PDI WaveStar TFA STS 250-600A
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