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1. ATS general introduction
1.1 Definition and working principle
ATS is short for automatic transfer switch. It is mostly used in emergency power supply system,
automatically switching the load circuit from one power supply to another (standby power supply)
and insuring the continuous and reliable running of important load.
1.2 Applications
(1) Switch between the grid and standby power supply (i.e. generator set)
Applicable to the system of standby power supply (i.e. generator set) or one-way power grid. The
transfer switch can automatically detect power fault of the grid, send start signal to standby
generator set and switch the load.
(2) Switch between generators
Applicable to the system with several generator sets as the main power supply. If the main
generator set goes wrong, the transfer switch will send start signal to the second generator set and
switch the load.
(3) Switch between the grids
Applicable to the multiple power grids without a standby generator set. If one grid goes wrong, the
transfer switch will automatically connect the load to the second one.
(4) Triplicate power supply
A. Applicable to the single standby power supply and dual grid system.
The grid transfer switch controls the power supplied by dual grid according to the predetermined
order. If power supply of both the grids goes wrong, the transfer switch will send start signal to
standby generator set and switch the load.
B. Applicable to the single grid and dual standby power supply system.
If the grid goes wrong, the transfer switch will send start signal to the main standby generator set
and switch the load. If the main standby generator set goes wrong, the transfer switch will send
start signal to the second standby generator set and switch the load.
1.3 ATS switching mode
(1) Open-loop switching (in-phase switching, power-off switching)
Off after On is the basic switching mode: Firstly switch off the first power supply, and then switch on
the second power supply. Users can monitor both the power supplies and start switch with the
in-phase monitor (or sync check function) in the controller, so as to avoid the problem of
out-of-phase.
Application: emergency power system, regulation specified power system and optional standby
power system; resistive load; small motor load.
Summary of Contents for KPEC Series
Page 1: ...1 KPEC Series User Manual of ATS Cabinet www kipor com...
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Page 40: ...2 User wiring diagram six together...
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Page 43: ...3 Definition of ATS cabinet remote control aviation plug option...
