Interface Test System (ITS)

VDE Standard

The ITS is a flush-mount test block engineered to establish safe interfacing between substation devices, such as protection relays, fault recorders, revenue meters, and various components within the power grid’s system side, including voltage and current transformers.

Complementing the ITS test blocks, the STP is a purpose-designed test plug precisely matched to the specific configuration of ITS test blocks. Upon insertion into the corresponding test block, the STP plug effectively isolates the substation devices from the system side equipment. Simultaneously, it facilitates the connection of test equipment, enabling the execution of secondary injection tests with precision and accuracy.