All electronic turbine governors from Hymatek Controls can be delivered with built-in over–speed protection. This function is also available in a separate apparatus, TUVA.
TUVA measures the rotation speed of the machine and provides output signals for different speed levels which in turn is used in the control and monitoring of the machine. Total 8 speed levels are available. The levels can be adjusted and covers the area from standstill to overspeed.
TUVA also acts as a protection unit that signal critical speed. TUVA is designed as a standalone product, but is often installed together with a turbine governor. Redundancy in the functionality can be achieved by the use of a turbine governor or alternatively with a secondary TUVA device.
The device is available in several versions:
- TUVA 20: Over-speed protection, standard single-channel design delivered on the Connexi® platform
- TUVA 22: Over-speed protection, two-channel design with redundant electronics delivered on the Connexi® platform