Transformer and substation secondary equipment

In order to apply electronic transformer substation automation system, one of the key issues to be resolved is the transformer substation secondary equipment with the interface between. Electronic  Circuit breaker  secondary output is divided into two kinds of digital and analogue outputs. Analog output is to use existing analog interface  Air circuit breaker  secondary equipment, is a transitional measure. The digital output is a new electronic transformer substation on request. International  electric meter  Commission developed a standard file electronic transformer IEC60044-7/8, which includes parts of the interface described.