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Actuation Test Equipment Co.
3393 Eddie Road
Winnebago, Illinois 61088  
Doug Albright
(815) 335-1143  
Flag & Eagle
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.    

Noise Immunity is enhanced by a hysteresis circuit on the input side. Input threshold voltage can be adjusted from 0.015 VP-P to 1.0 VP-P amplitude to block spurious noise input signals and prevent unwanted output responses. 
ATE-32 Data Sheet Link

ATE-31 PT Interface

The ATE-31 introduced in 2003 has the same electronic circuit and functionality as the ATE-30. Redesign into the Phoenix Contact enclosure offered several advantages that made this alternate package design modification desirable.

The enclosure provides more room inside for additional or alternate circuitry and an optional magnetic shield that can be added to suppress EMI/RFI from the AD-210 switching power supply. An optional "spring cage" connector provides an alternative to traditional screw-terminal connectors.
ATE-31 Data Sheet Link

ATE-30 The 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. 

Original Data Sheet Link

ATE-36 Power Module  ATE-36_PCBoard

2006- The ATE-36 was designed as a high power driver for Voith (R) voice coil torque motor drivers. Two were sold to North American Phoenix for use in a governor upgrade at Newfoundland Hydro. After 6+ years of service, they are still working just fine. The Data Cut Sheet has the specific engineering  details.

ATE-36 Data Sheet  Link

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