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Transformer Testing
Transformer testing is essential to verify the reliability and proper operation of a transformer as per applicable standards. Transformer test equipment are required for new, repaired, regularly inspected transformers for the sake of preventive maintenance or suspected faulty transformers.
ASD manufactures a set of test systems for single and three phase transformers with versatile features and capabilities.
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As per customer’s request, our systems can perform the following tests and measurements in accordance to the applicable IEEE/IEC standards. The system’s hardware and software design are customized to satisfy your rating requirements and tests you select.
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Contact us and we’ll get back to you to understand your requirements and quote you accordingly.
Whether semi or fully automated, the following features are almost common to single and three phase transformer test systems.
- Zero voltage start
- Over-current ground protection
- Over-current & over-voltage protection
- Separate main and control power circuit breakers
- Emergency shutdown button
- Safety interlock and multi layer protection
- Automated voltage ramping, stabilizing, measuring and ramping down process
- Automated tap changer selector (3-phase)
- Auto-ranging meters and precision measurements
- Automated data acquisition
In a semi-automated system data acquisition, measurements, tests sequence and reporting are automated only the lead setup between tests is manual. While in fully automated, only one time lead connection is made to the transformer and the system automatically switches lead setup between tests.
To keep systems functioning properly on the long term, our professional team offers services as on-site calibration, maintenance, upgrades and repair. Check our Services!
All ASD products are equipped with well developed software that adds further power and versatility to systems. All software share some basic features.
- LabView Platform
- User friendly, attractive visual interface
- Ability to connect to existing client database files and servers
- Password protected login with different user access levels
- Configurable hardware and software settings
- Automatic test sequence mode
- Manual test mode for troubleshooting purposes
- Hardware diagnostic tests on the system’s components
- Automatic up & down ramping of supply levels during test
- Automatic data acquisition and measurement processing
- Automatic temperature corrections when needed
- Real-time graphical charts and value displays of current, voltage and power
- Save, search, sort and retrieve test results to and from database
- Generate certified test reports in excel or other formats
A high precision measurement system is implemented in transformer testing systems. This enables accurate reading of voltage, current and power. The metered values are displayed on the software interface through controllers. Since our systems are customized to client’s needs and requirements, the measurement system design may differ respectively. Generally, the following metering specs are featured.
Single Phase Power Meter
5 digit display, accuracy : ±(0.1 % reading + 0.1 % range) for voltage, current and power at unity power factor
Three Phase Power Meter
5 digit display, accuracy : ±(0.1 % reading + 0.05 % range) for voltage, current and power at unity power factor
Data Acquisition System
61/2 digit, accuracy: ±(0.05%reading + 0.02% range) Voltage
Systems operate normally under these environmental conditions.
Temperature: 40º to 100ºF
Humidity: 5 to 95%
Three Phase Transformer Test System
Semi-automated, customizable system to test & verify distribution transformers up to 6500KVA and small power transformers up to 10MVA. Can be mobilized for field use.
Fully Automated Transformer Test System
Single station, fully-automated, customizable system to test & verify three phase transformers up to 2500KV.
Automated Multi-Station Transformer Test System
Semi-automated, customizable system to test & verify three phase transformers up to 5000KVA. Suitable for factory testing.
Single Phase Transformer Test System
Semi-automated, customizable system to test & verify single phase transformers up to 500 KVA rating. Suitable for lab use.
Fully Automated 1-Phase Transformer Test System
Fully-automated, one station and customizable system to test & verify single phase transformers up to 333 KVA rating.
Portable Single Phase Transformer test System
Semi- automated, customizable and portable model to test & verify single phase transformers up to up to 100KVA ratings. Suitable for field use.
Resistance and Ratio Test System
Fully / Semi- automated, customizable system that can be a standalone or integrated within the single and three phase transformer test systems. The system can test the winding resistance, turns ratio and phase displacement. Testing capabilities:
Resistance: 50 µΩ– 50 Ω / Ratio: 1-999
Heat Run Transformer Test System
Fully / Semi- automated, customizable system that can be a standalone or integrated within the three phase transformer test systems rating up to 7500 KVA. The system measures the temperature rise of the transformer under rated Load utilizing heating and cooling cycles.
Hi-Pot Transformer test System
Semi- automated, customizable system that can be a standalone or integrated within the three phase transformer test systems rating up to 150 KV, 40KVA. The system measures the dielectric strength in transformer at high volt / low volt.