Electric Generator Tester
The Generator Tester includes voltage, current, regulation, resistance, hipot, core loss, rated speed and over speed tests on a computer-based, fully automatic equipment designed to test electric generators in a production line environment. Regulator programming is also available as a part of the test sequence.
Electrical tests
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Open circuit voltage and balance
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Short circuit current and balance
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Circulating currents for main and PMG coils
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Automatic voltage regulation with DC power supply excitation and flashing current for excitation coil
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For 1-phase and 3-phase generators
Resistance test
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4-Wire Kelvin connections are used to provide the best measurements for low resistances
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Resolutions from 0.1µΩ are available for very low resistance components
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Ambient temperature compensation is standard
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Optional non-contact infrared spectrum temperature measurement is available
Hipot test
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Voltage ranges from 50 to 5000 volts, AC or DC
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Arc detection to sense breakdowns
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Capacitive current compensation to measure only the resistive portion of the current
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Ramped turn-on voltage to avoid high inrush currents
Regulation
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Automatic regulation through DC power supply for the excitation coil. The system automatically rotates the generator to the specified speed, regulates the output and performs the measurements.
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The generator’s digital regulator can be also automatically programmed via bus interface such as RS232, USB or Ethernet.
Speed and Core Loss
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Generator is rotated using a computer-controlled motor-drive set to automatically perform both the rated-speed and the over-speed tests.
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The core loss is measured by using the power measurement from the drive spinning the generator.
Fixturing
ALM offers a complete range of fixture options, from manual to fully automated systems. Standard fixtures include 4-Wire Kelvin clips, manual mount, and coupling for generator under test, as well as physical safety curtains.
Software
- Windows operating system based.
- Automatic mode for fully automated testing.
- Database for Test Limits and Tests Results.
- Option for ALM 4.0 SCADA interface.
Options and Accessories
Each tester is a semi-custom system. Additional features not listed on this datasheet are available to integrate upon client’s request, such as:
- Specific instruments and tests such as temperature measurements.
- Automatic test-pass markers, printers, touch panels and QR readers.
- Integration with existing databases for part numbers download/validation and for data storage.
Please give us a call, we’ll be glad to discuss your requirements to include them in your system.
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