Малогабаритные модульные высоковольтные ячейки в металлических корпусах серии TPS

Малогабаритные модульные высоковольтные ячейки в металлических корпусах серии TPS-V 

Моноблочная система высоковольтных элегазовых ячеек серии TPR6

Introduction
TPS MV switchboards are constructed of standardized modules in metal sheets. These modules contain SF6 insulated devices for switching and earthing. The main advantages of TPS switches are reduced installation and maintenance time and small dimensions. All this is obtained by ensuring maximum personnel safety.
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Construction characteristics
The switchboard is made of a metal structure composed of galvanized steel sheets that are assembled using rivets and bolts. This structure is built to withstand the electrodynamic stresses during the operation. A three position earthing switch is fixed to this structure. An envelope made of epoxy resin makes the isolation possible between the structure and live parts.
An operating mechanism, a movable mimic and a voltage indicator are positioned in the front of the panel. The position of the switch is given by the movable mimic whereas the voltage signalling lamp indicates the voltages.
It is possible to inspect the inside of the switch through an inspection window positioned above the operating mechanism. In the front of the panel there is a door giving access to different compartments, e.g. cables, fuses and measurement. When the door is closed it is possible to see inside the switch through the inspection window.
If the module is equipped with a low voltage auxiliary compartment it is situated in its upper part.
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Safety characteristics
The personnel safety is obtained by mechanical interlocks which guarantee correct operations of the device. In
this way involuntary mistakes which could be dangerous for the operator can be prevented.
Metal screens prevent access to electrical parts during maintenance operations. It is possible to block the switch
in three positions with key locks.
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Series
TPS is available in the following two series:
Standard series: The series guarantees the internal arc proof on the frontal side up to 12.5kA for 1 sec.
Internal arc proof series: The series guarantees the internal arc proof on the four sides up to 16 kA for 1 s.