Kestrel in collaboration with Broy Engineering Ltd supplies a selection of hardware products focusing on the testing and monitoring of utility-scale generators and their controls. Decades of experience in on-line testing have led to the development of transducers and recording equipment designed to safely interface to large generators.

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please  contact us

PowerVu Data Recorder

The PowerVu data acquisition system is a multi-channel device designed specifically for measuring the response of utility generators and other three-phase power system devices during staged tests or under ambient operating conditions. In its standard configuration, the system measures three-phase voltages and currents (six channels) and up to ten other quantities using a combination of isolated and non-isolated inputs. Calculations are performed on the ac input channels to determine quantities such as RMS voltage amplitude, reactive power, sequence components and frequency. These calculations replace the conventional hardware transducers that would have formed part of previous power system data acquisition systems.

The PowerVu includes a fully isolated multi-channel test output facility that allows the generation of a variety of output signals for time-domain and frequency-domain testing of generators, excitation systems, power system stabilizers and governors.

PowerVu Front View

The PowerVu is configured and controlled through any laptop computer running the Client software. The Client computer communicates with the Server over a network or through a direct Ethernet connection. The Client software allows the user to configure and control the Server, display data being calculated in real-time and capture data records. The PowerVu Client provides advanced tools for visualizing test results in real time and archiving them for future reporting.

PowerVu Client Meters Screen

ISOCH Frequency Recorder

The ISOCH (derived from the term isochronous, the constant frequency mode of governing) frequency recorder is a microprocessor-based data acquisition system that has been designed specifically to perform un-attended measurement of power system frequency and governor quantities. The ISOCH continuously monitors the input frequency and initiates a recording based on various triggers. It has been designed for high resolution and accuracy and uses various trigger algorithms to automatically identify events that will be of interest to power system planners, operations specialists and station maintenance staff.

Unlike other standalone frequency recorders, the ISOCH is capable of measuring four other analog quantities allowing the system to be used as a rugged, highly portable recorder for governor system tests and troubleshooting. It is also capable of generating an analog output signal proportional to frequency for use with other recording equipment or metering.

ISOCH Front View

ISOCH Rear View Showing Connection Points

The ISOCH Client software provides a real-time display of frequency and other measured quantities and provides the interface for configuring the ISOCH triggering and recording.

ISOCH Client Real-Time Display

Transducers

Kestrel has designed a number of analog transducers and isolators for use in monitoring generator terminal quantities safely. For further information on these products contact Broy

3 Phase Terminal Voltage Transducer

Produces three outputs based on a set of balanced three-phase voltage inputs:

The amplitude output has an adjustable gain and a low time constant (10 ms) for use in recording terminal voltage transients during testing or for ambient monitoring purposes. Nominal input is three-phase 115 Vac RMS.

DC Isolators

A series of isolators designed for connection to the field windings or excitation system outputs of utility-scale generators. These isolators provide high-voltage isolation for safety, high common-mode rejection for measurement accuracy and adjustable filters to provide clean outputs while still maintaining high bandwidth for measurement purposes. Versions are available for use as portable test equipment and for permanent installation. Common specifications for each of these units include: