Download DESCRIPTION OF SUPER SWITCH OPERATION The Super switch

DESCRIPTION OF SUPER SWITCH OPERATION
The Super switch is an automatic static transfer switch designed to provide fast automatic
transfers between two independent, synchronous AC power sources to provide continuity
of AC power to critical equipment, such as information technology equipment. One of
the two AC inputs is designated as the “preferred” source to which the super switch will
connect the load as long as the designated input source is within acceptable voltage
limits.If the preferred source falls outside the acceptable limits, the Superswitch is
designed to transfer the output load to the other “alternate” input source, as long as the
alternate source is within acceptable voltage limits and is synchronized with the preferred
source within the selected phase synchronization window. The Superswitch provides fast,
break-before-make transfers to prevent interconnection of the two sources, even under
faulted source conditions. The maximum sense and transfer times are within the tolerance
of IEEE Standard 446 susceptibility curve for information technology equipment to allow
uninterrupted load equipment operation. Incase of overload, Superswitch gives the alarm.
Short circuit condition of the load is protected by a fast acting semi conductor fuse.The
Superswitch consists of two modules. Fixed module consists of the input and output
connections and manual bypass transfer control switch. Second module is hot swappable
plug in type removable electronics & static switching module. The bypass / transfer
control switch is located behind a key locked hinged access cover to restrict access to
qualified or designated operators. The plug in module likewise contains key locked
latches to prevent unauthorized removal of the module. The Superswitch is designed to
allow replacement of the removable electronics /switching module without having to deenergize the load equipment.The Superswitch has a live mimic to display the current
status of the unit. This mimic is located on the removable electronics module. Mimic is
active as long as at least one source is on.The fixed module of the Superswitch also has
live mimic indicating the status ofsource & load even if hot swappable electronic module
is removed.
SUPER SWITCH
TECHNICAL SPECIFICATIONS
1 : GENERAL SPECIFICATIONS
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Manual and Automatic Transfers.
Sense and transfer time: Less than 6 milliseconds.
Break-Before Make-switching.
Selectable Preferred Source.
Selectable Auto/Manual Retransfer.
In-Phase Transfer Window: Adjustable from 20 V to 100 V
Convection cooling.
Hot swappable electronic static switching module
Live mimic on electronic static switch module for indicating load supply
status & alarms.
Live mimic on fixed module to indicate supply status even with electronic
module removed.
Make before break manual bypass switch to transfer load from static switch
to direct source 1 or source 2.
: ELECTRICAL SPECIFICATIONS
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Nominal Input Voltage
220, 230 or 240 volts singe phase, 2W+G, 50 Hz.
Solidly grounded power sources.
Source unhealthy status – Adjustable from -10 to –20 % of nominal voltage
Maximum continuous source 25 A, 50 Hz
Load Power factor range: 0.5 to 1.0 leading or lagging
Load Crest factor: up to 3.5.
Source voltage distortion: up to 10% THD
Overload capability: 125% of continuous current for 2 hours, 1000% for two
cycles minimum.
Over current Protection: By semi conductor fuse
Short circuit withstand capability: up to 20,000 symmetrical amps, protected
by internal fusing.
Redundant Control Power supplies.
Integral Maintenance Bypass.
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Eight Isolated Normally Open alarm & static switch Status Contacts.
: ENVIRONMENTAL SPECIFICATIONS
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Storage temperature range - -40 to +60
Operating temperature range – 0 to 40 C
Relative Humidity – 0 to 95 % without condensation
Operating Altitude – up to 5000 feet (1500 meters) above sea level without
derating.
Storage / Transport Altitude – up to 40,000 feet (12,000 meters) above sea
level.
Audible Noise – less than 45 dBA at 5 feet (1.5 meters).
DESCRIPTION OF SUPERSWITCH OPERATION
The Superswitch is an automatic static transfer switch designed to provide fast automatic
transfers between two independent, synchronous AC power sources to provide continuity
of AC power to critical equipment, such as information technology equipment. One of
the two AC inputs is designated as the “preferred” source to which the superswitch will
connect the load as long as the designated input source is within acceptable voltage
limits. If the preferred source falls outside the acceptable limits, the Superswitch is
designed to transfer the output load to the other “alternate” input source, as long as the
alternate source is within acceptable voltage limits and is synchronized with the preferred
source within the selected phase synchronization window. The Superswitch provides
fast, break-before-make transfers to prevent interconnection of the two sources, even
under faulted source conditions. The maximum sense and transfer times are within the
tolerance of IEEE Standard 446 susceptibility curve for information technology
equipment to allow uninterrupted load equipment operation. In case of overload,
Superswitch gives the alarm. Short circuit condition of the load is protected by a fast
acting semi conductor fuse.
The Superswitch consists of two modules. Fixed module consists of the input and output
connections and manual bypass transfer control switch. Second module is hot swappable
plug in type removable electronics & static switching module. The bypass / transfer
control switch is located behind a key locked hinged access cover to restrict access to
qualified or designated operators. The plug in module likewise contains key locked
latches to prevent unauthorized removal of the module. The Superswitch is designed to
allow replacement of the removable electronics /switching module without having to deenergize the load equipment.
The Superswitch has a live mimic to display the current status of the unit. This mimic is
located on the removable electronics module. Mimic is active as long as at least one
source is on. Fig. 1 indicates the status and alarm indicators in mimic. The fixed module
of the Superswitch also has live mimic indicating the status of source & load even if hot
swppable electronic module is removed. This is also indicated clearly in Fig 1.