IEC/IEEE International Standard - Station Service Voltage Transformers (SSVT)
New IEEE Standard - Active.
This document describes *electrical and mechanical requirements* of single-phase station service voltage transformers with system voltages of 46 kV or higher and with the maximum rated voltage of the power winding of 1 000 V.
This document is a basis for the establishment of performance and limited electrical and mechanical interchangeability requirements of the equipment are described. It is also a basis for assistance in the proper selection of such equipment.
A station service voltage transformer (**SSVT**) is a single-phase transformer to be connected line-to-earth on an effectively earthed system. It can be used either as an individual unit for supplying single-phase loads, or in a three-phase bank to support three-phase loads.
A typical application is to supply substation power such as lighting, pump and motor loads. The **SSVT** can be provided with a measuring winding when requested by the user.
This Standard is a basis for the establishment of performance and limited electrical and mechanical interchangeability requirements of the equipment described.
The Standard also provides assistance in the proper selection of such equipment.
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