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Test Equipment Co.
3393 Eddie Road
Winnebago, Illinois 61088
Doug Albright DudleyDevices@Aol.com
|Hydroelectric Turbine Control Equipment|
2011 - The Model ATE-32 PT Interface Module is a signal conditioner that converts the output of the Potential Transformer of a hydroelectric generator to a 24 Volt pulse train suitable for input to a PLC-based frequency counter. Input amplitude range is 0.2 VRMS to 180 VRMS. Input frequency range is from 6 Hz to 120 Hz. Over 2000 VDC isolation between the input and output circuits protects the governor PLC.
Immunity is enhanced by a hysteresis circuit on the input side. Input
voltage can be adjusted from 0.015 VP-P to 1.0 VP-P amplitude to block
noise input signals and prevent unwanted output responses.
ATE-31 introduced in 2003 has the
same electronic circuit and functionality as the ATE-30. Redesign into
Phoenix Contact enclosure offered several advantages that made
alternate package design modification desirable.
ATE-30 PT Interface signal conditioner was introduced in 2001 as a
replacement upgrade for
magnetic and proximity pickups and toothed wheel gears for speed
sensing of hydroelectric turbines.
The ATE-3X signal conditioner converts the electrical output of a generator into a pulse train suitable for digital counters to measure rotating speeds down to 10% speed (6Hz) with no excitation. Residual voltage output of an unexcited generator is typically > (0.2 AC VRMS) at 10% speed. This is beneficial during off-line startup when precise governor speed control is required for rapid synchronization of the generator to the electrical grid before closing the breaker contacts and for precise control of unit braking during shutdown.
The ATE-36 was designed as a high
power driver for Voith (R) voice coil torque motor drivers. Two were
North American Phoenix for use in a governor upgrade at Newfoundland
After 6+ years of service, they are still working just fine. The Data
has the specific engineering details.