The main features of the line of blocks and plugs of 14 circuits in TSB SaTECH range are the
following:
14 circuits, versatile selection, with different configuration (trips, voltages and
currents, contact type 1, 2, A and B, with the alphabetical designating currents). This
configuration should be defined prior to the order, because afterwards this
configuration can’t be modified.
Safe for the user, the user will never have access to live parts during insertion or
extraction of the test plug, and any field connection is located on safety connectors.
Safe insertion sequence, (make before break). The trip circuits are opened in the
first place, avoiding undesired operation and later on, the voltage and current circuits
are opened, ensuring that transformer circuits are shorted before opening the current
circuits.
Safe extraction sequence, the defined extraction sequence assures to have
enough time to stabilizing the system. The first step connects the voltage and the
current circuits, later on, the user must act specifically on the test plug before being
able to extract it completely.
Unique test plug for different test block configuration for the same number of
circuits (14).
Installation Orientation, there are two options: vertical and horizontal, the user is
able to choose the installation orientation.
Avoid errors in the maneuver: Using the cover plugs available in the plug:, User
errors are avoided blocking access to field voltages and currents.. (plug odd
terminals in case of model 14, terminal pairs in the case of model 14RC) in type
contacts 2, A and B, and / or avoiding the injection of other power sources in type 1
contact. Cover plugs are compatible for all test plug terminals.
Type 1 contacts are referenced to circuits that open in the first phase (trips, signals and
protection power supply).
Type 2 contacts are referenced to circuits that open in the second phase (voltage).
Type A contacts correspond to the current circuits with automatic short-circuited.
Type B contacts are referenced to current circuits with automatic short-circuited, indicating the
end of the shot-circuit group.
