Introduction; Warranty; Description - GE Digital Energy STS-230-25-2-RM Installation And Operating Manual

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Digital Energy Static Transfer Switch
2.1

Warranty

GE Digital Energy, operating through its authorized agents, warrants that the standard products will be free of
defects in materials and workmanship for a period of 24 months after the date of invoice, or such other period
as may be specified.
NOTE
This warranty does not cover failures of the product which result from incorrect
installation, misuse, alterations by persons other than authorized agents, or abnormal
operating conditions
2.2

Description

Static Transfer Switches type STS-230-XX (STS-230-25, STS-230-40 and STS-230-63) are designed for
switching between two alternative electrical power sources without supply interruption for energy receivers. The
static transfer switch (STS) is connected to two sources of electrical power with terminals called X01 PRIMARY
SOURCE and X02 SECONDARY SOURCE. The rated voltage of both sources is 230V AC and the frequency
is 50Hz. Depending on the current settings and the state of the system, one of the two sources (PRIMARY
SOURCE or SECONDARY SOURCE) is "connected" to the output terminal called X03 STS OUTPUT. Possible
methods for transferring the load from one source to other one are explained in chapter 4.
Optionally the device is equipped with a Switch Board. The Switch Board consists of an Integrated Switch (K1,
K2, K3, K4 and K5) and it functions as manual bypass that allows uninterruptible exchange of the STS.
Mechanical arrangement of the Integrated Switch ensures "brake before make" type of switching and their
proper sequence.
Figure 1. Electrical diagram of Static Transfer Switch (STS) with manual bypasses
Each single line on the diagram represents two wires inside the STS-230-XX.
PRIMARY SOURCE, SECONDARY SOURCE and STS OUTPUT connections consist of three wires each
including Protective Earth (PE).
OPM_STS_230_25A_2RM_1GB_V012

2 - Introduction

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GE DE STS: installation and operating manual 1.2 (GB)
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