1) Grid synchronous voltage signal: The synchronous voltage signal of the trigger is taken from the grid voltage.
2) Thyristor zero-crossing synchronization signal: The synchronous voltage signal of the trigger is taken from the cathode and anode of the thyristor.
3) Thyristor trigger current rate of change: Refers to the steepness of the thyristor trigger current, the MA value of trigger current rising in 1US. Generally >40MA/US.
4) Trigger pulse width (US): The time from when the trigger current rises to 10% and falls to 10%, in US. Generally >50US.
5) Thyristor trigger current intensity (MA): Generally 5 to 7 times the thyristor trigger current, >500MA.
6) Pulse train triggering: The thyristor trigger current of TSC is not a single pulse or double pulse, but a train of pulses. The width of the pulse train can be 120, 180, or even 360.
7) Latching current: The plateau of the gate trigger current. It requires a "shoulder"; the higher the "shoulder", i.e., the larger the peak value of the "latching current", the more reliably the thyristor can be turned on; the wider the "shoulder", i.e., the larger the RMS value of the "latching current", the more reliably the thyristor can be turned on.
8) Insulation level of the trigger: Refers to the voltage level that the trigger can withstand, i.e., the voltage level that can be withstood between the high potential on the grid side of the trigger output and the low potential of the trigger input.
9) TSC trigger action time (MS): Refers to the time from when TSC stops to when it is re-triggered. A fast trigger is 20MS. It is not the time from when TSC receives a command to when it acts.
10) Harmonic current characteristics of the TSC trigger: When there is a large amount of harmonic current in the main circuit, the trigger can still make the thyristor work normally. 11) Trigger characteristics of the SC trigger in low-order filter circuits: Check whether the trigger can still make the thyristor work normally in low-order harmonic circuits, such as a 3rd-order filter circuit.
12) Unbalanced trigger and balanced trigger: An unbalanced trigger can trigger each phase thyristor separately, while a balanced trigger requires all phase thyristors to act when a command is received.
13) No surge in conduction current: When the trigger goes from stop to trigger, the thyristor current does not significantly exceed the normal steady-state value. Generally, the surge current during conduction is not greater than 1.7 times the normal current peak.
