User manual
Strona 30 z 36
IU_M710P_MANUAL_05i00_ENG
3.13.2.
CBCT - Circuit Breaker Control Test
Menu > Management > Diagnostics > CBCT – Circuit Breaker Control Test
CBCT - Circuit Breaker Continuity Test
checks the continuity of the control lines of the breaker coils and
auxiliary voltage. Lack of continuity is indicated by a message on the LCD display, the LED diode and the relay
UP output (memorized signalization). Signaling can be reset by pressing UP button on the operator panel.
The CBCT can be blocked in the device settings independently for opening and closing circuits.
3.13.3.
HVT - High Voltage Test
Menu > Management > Settings > Settings X >Autotest > HVT
HVT – High Voltage Test
checks the cable insulation
using external high voltage generator. It allows testing
cable insulation and verify the operation of the
generator using an external test resistor. HVT can work
in manual and automatic modes. In the manual mode,
the test is triggered by operator request. In the
automatic mode, it is possible to test the generator at
the request of the operator, and the test runs
automatically before each closing of the circuit breaker.
3.13.4.
PAT - Protection and Automation Test
Menu > Management > Settings > Settings X >Autotest > PAT
PAT – Protections and Automation Test
check
operation of the protections and the automatic functions
using external testers. It allows to check protections and
automatic functions including inputs circuits (measuring
and digital inputs) used by the algorithm. PAT requires
the test signal generators that are attached to the inputs
of the bay controller. After the start, test signals are
attached to inputs and PAT checks the response to the
signals. PAT can work in manual and automatic modes. In
the manual mode test are initiated by an operator while
in the automatic mode tests run periodically at preset
hours.