
DAPRO SRL
Founded in 2013, it is a service company , specialized in the commissioning, maintenance and electrical checks of medium and high voltage equipment.
The highly specialized technical staff has extensive work experience in the field of:
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Maintenance, installation and commissioning of power, distribution, furnace, rectification, PST and reactor transformers
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Low voltage (off-line) electrical tests on transformers
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Maintenance and commissioning of variable frequency drives (VFD) for electric motor drives
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Electrical tests on CTs and measuring TVs
Our aim is to provide our partners with immediate and high quality service, maximising the duration of the intervention in order to minimise plant downtime.
INSTALLATION, COMMISSIONING AND ELECTRICAL TESTS ON TRANSFORMERS
DAPRO proposes itself as the ideal partner of the major manufacturers of electrical transformers, producers, distributors and users of electrical energy for the maintenance and diagnostics of the status of their power transformers, distribution, rectification, PST and reactors
Over the years we have specialized in commissioning and low voltage electrical testing, with particular attention to the use of cutting-edge instruments such as the Testrano 600 and Franeo 800 by Omicron or the IDAX300 by Megger for DFR tests, in order to have precise and reliable results.
We offer high quality services to ensure the efficiency and safety of electrical systems.
The electrical tests we perform at low voltage are:
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Measurement of Transformation Ratios, Vector Group and Magnetizing Current
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Measurement of Ohmic Resistance of Windings
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On-Load Tap Changer (OLTC) Dynamic Scanning
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Measurement of Capacitance and TanDelta of Windings and Bushings
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Short Circuit Impedance Measurement
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Insulation Resistance Measurement
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FRSL (Frequency Response of Stray Losses) measurement
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Moisture Detection Measurement (DFR)
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Frequency Response Measurement (FRA)
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Transformer-loaded thermography
COMMISSIONING AND ELECTRICAL TESTING ON MEDIUM VOLTAGE INVERTERS (VFD)
DAPRO has been operating for several years in the commissioning of VFD (Variable Frequency Drive) for medium voltage electric motor drives.
Commissioning and electrical testing of VFDs are essential procedures to ensure that the frequency converter is operating correctly before being put into service.
The main activities we carry out are described below:
- Supervision of installation and wiring of power and signal cables
- Check power supplies, earthing and insulation
- Power supply and first parameterization of the control
- Check signal interface with DCS and/or external signals
- Blank tests and verification of protection intervention
- Empty tests
- Load tests and fine tuning
REFERENCES
The success of DAPRO is the success of the companies that have chosen it.
To them, the best, the DAPRO group dedicates quality, efficiency and flexibility, in a successful entrepreneurial story.

CONTACT US FOR MORE INFORMATION
If you would like to receive more information about our services or if you need a free quote, call the number: +39 3661510112 or fill out the following contact form.

REGISTERED OFFICE:
VIA ANTONIO STOPPANI 52
20025 LEGNANO (MI)
OPERATIONAL HEADQUARTERS:
VIA CASTELFIDARDO 1 BIS
21052 BUSTO ARSIZIO (VA)
DAPRO SRL
VAT number 08397660963
SHARE CAPITAL: 10,000.00 IV
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We are committed every day to training our technicians in order to strengthen the skills of our Team, improve safety and develop problem-solving skills.
CONTACTS
+39 3661510112