Eaton Static Transfer Switch 2000A 3-Pole Installation and Operation Manual 164001127—Rev 01 27
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.
55..11..66 PPhhaassiinngg VVeerriiffiiccaattiioonn PPrroocceedduurree
With all Circuit Breakers (MCCBs and MCSWs) open, verify correct phasing by verifying the following
measurements:
• Zero volts between the phase A poles on the line side of all input Circuit Breakers.
• Zero volts between the phase B poles on the line side of all input Circuit Breakers.
• Zero volts between the phase C poles on the line side of all input Circuit Breakers.
• Zero volts between the phase A poles on the line side of all bypass Circuit Breakers.
• Zero volts between the phase B poles on the line side of all bypass Circuit Breakers.
• Zero volts between the phase C poles on the line side of all bypass Circuit Breakers.
55..22 AAddddiittiioonnaall IInnssttaallllaattiioonn RReeqquuiirreemmeennttss
55..22..11 CCoommmmuunniiccaattiioonnss IInnssttaallllaattiioonn
After acceptance testing, the unit should be configured for communications, including dry contacts, if not
already done. See Chapter 6 Customer Communications Connections
55..22..22 SSTTSS SSeettuupp
After installation, start-up, and communications configuration, the STS should be set up in three categories:
• Administrative setup: assign user PINs, passwords, and access levels. See
Chapter 9 System Setup: Administration.
• Operational setup: configure transfer parameters. See Chapter 10 System Setup: Operation.
• Network setup: configure networking options and addresses. See Chapter 11 System Setup: Networking.
Installation and Startup Procedures
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