Emerson Liebert Static Transfer Switch- User Manual
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Table of Contents:
- Page 2 – ters within 3 feet (1 meter) of the unit; STS
- Page 3 – Liebert Static Transfer Switch 2 Guide Specifications
- Page 4 – Up to 10% THD with notches and ringing transients.; D. Operating Altitude
- Page 5 – Submittals with the proposal shall include:
- Page 6 – A list of recommended spare parts shall be furnished upon request.; QUALITY ASSURANCE
- Page 12 – FIELD QUALITY CONTROL
- Page 13 – throughout the country.
SL-20610 (R 11/02)
1
CSI 16262 - Static Transfer Switches
Liebert Static Transfer Switch 2
Automatic Static Transfer Switch
GUIDE SPECIFICATIONS
for 100A – 1000A
1.0 GENERAL
1.1 SUMMARY
These specifications describe the requirements for an automatic static transfer switch (STS). The STS is a
solid-state, three-pole, dual-position transfer switch designed to automatically and manually switch
between two synchronized three-phase AC power sources without an interruption of power to the load
longer than 1/4 cycle. The input power shall be supplied from two different AC power sources, which are
nominally of the same voltage level, phase rotation, and frequency. The primary purpose of the STS is to
allow virtually uninterrupted transfer from one source to the other in case of failure of one source or by
manual initiation for test or maintenance. The switching action shall not connect together the two sources
of power that would allow back feeding one source to the other. The STS shall allow for either source to
be designated as the “preferred source” to which the switch will automatically transfer to and remain
transferred to until manually initiated to transfer or until the selected source fails, at which time, the STS
shall transfer without interruption greater than 1/4 cycle to the other source, or “alternate source”. The
STS shall be furnished with key-interlocked static switch isolation and bypass breakers to each source
which allow uninterrupted manual transfer to and from either source for maintenance.
1.2 STANDARDS
The specified system shall be designed, manufactured, tested, and installed in accordance with:
•
American National Standards Institute (ANSI)
•
Canadian Standards Association (CSA)
•
Institute of Electrical and Electronics Engineers (IEEE)
•
ISO 9001
•
National Electrical Code (NEC)
•
National Electrical Manufacturers Association (NEMA)
•
National Fire Protection Association (NFPA)
•
Underwriters Laboratories (UL) (ULc)
•
EN 50091-2
•
EN 61000-6-3 & 6-2
•
EN 60947-6-1
•
IEC 62310
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Summary
Liebert Static Transfer Switch 2 Guide Specification The STS shall be UL and UL listed per UL Standard 1008 for Automatic Transfer Switches. The STS shall comply with the latest FCC Part 15 EMI emission limits for Class A computing devices and the emission limits of EN50091-1, 2, 3 Class A. The STS ...
100 – 1000 Amps SL-20610 (R 11/02) 3 settings. All setting must be adjustable; the settings shall be adjusted/configured from the LCD display. A. Normal Mode. The unit is fed by two sources with the output connected to the load. In normal operation, the load shall be connected to the preferred sourc...
Liebert Static Transfer Switch 4 Guide Specification components without access to hazardous voltages when the unit is in maintenance bypass. 1.4.3 Performance Requirements A. Nominal Input/Output Voltage: [(200) (208) (220) (240) (380) (400) (415) (480) (600) ( )] volts three phase, [(3) (4)]-wire-p...
