Application - GE Digital Energy STS-230-25-2-RM Installation And Operating Manual

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Digital Energy Static Transfer Switch
Relay communication terminal port
X01
PE
PRIMARY
SOURCE
X03
X02
OUTPUT
SECONDARY
SOURCE
Figure 4. High current terminals (view without front covers)
2.3

Application

The STS-230-XX is designed to operate with two electrically separated electrical power sources connected to
terminals X01 PRIMARY SOURCE and X02 SECONDARY SOURCE. The sources are connected to the STS
with a three-wire cable each (one wire for phase, one for neutral and one for PE). Electrical parameters of the
input sources (PRIMARY SOURCE and SECONDARY SOURCE) and output external circuit (STS OUTPUT)
should meet specification for the STS. Three cables coming into the STS, two from sources and one from the
load, create three outgoing lines on the diagram showed on figure 1. Lines going from the sources are called
input lines and consequently the line going to the load is called output line. Input lines voltages and output line
currents values should not exceed acceptable ranges.
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OPM_STS_230_25A_2RM_1GB_V012 GE DE STS: installation and operating manual 1.2 (GB)