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TS 870 Transfer Switch
PM062 REV 11 16/04/19
17
Thomson Power Systems
4.2.3. MO- STYLE ATS MECHANISM (1000A-1200A OPEN & CLOSED
TRANSITION)
The ATS mechanism consists of 2 power
switching devices which are mounted in a vertical
stacked configuration. Each power switching
device uses a 120VAC motor operator with
individual spring charging mechanism and shunt
trip/close coils. The transfer switch mechanism
utilizes the power from the source to which the
electrical load is being transferred to. Open
Transition type transfer switches are equipped
with a cable interlock mechanism to prevent both
power switching devices being closed at the
same time.
Closed Transition type transfer switches allow a
make-before-break transfer sequence when both
sources of power are available. For Closed
Transition operation, the TSC 900 transfer
controller provides in-phase closing protection to
ensure all transfers are in synchronism prior to
closing.
Содержание TS 870
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