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Type I Static Transfer Switch (STS) – Powerware Type I STS
are high-speed, open-circuit switches that can transfer electrical
loads from one AC power source to another in a fraction of a
single electrical cycle. Because the Powerware Type I STS uses
modular, cost-effective SCRs, it is fused for protection during
a fault to protect the SCRs from rupture. |
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Powerware
Type II Static Transfer Switch (STS) – Powerware Type II
STS transfer electrical loads from one source to another, but
provides more power availability. The Type II STS eliminates
the chance of a loss of power to critical loads by properly
coordinating with the electrical distribution system. During
a fault condition, the Type II STS will continue to conduct
current, allowing downstream circuit breakers to work selectively.
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Powerware
Zero Footprint Integrated STS/PDU - The Powerware Zero Footprint
Integrated STS/PDU System combines the power protection of a
digital static transfer switch with a power distribution unit
into one space-saving unit. This unique arrangement minimizes
floor space requirements without compromising system availability.
In fact, the Powerware Zero Footprint STS/PDU is the size of
just the PDUs in a typical STS/PDU configuration – a savings
in floor space of more than 40%. |