Our Services
Transformer diagnostics, maintenance and repair services
On-site transformer maintenance
At Rymel we offer diagnostic and maintenance services both at your facilities and on site, including:
- Washing of the transformer and the cubicle with hydro-washer.
- Blowing and vacuuming of components of measurement and power cubicles.
- Washing of doors and cubicle covers.
-Correction of oil leaks.
- Change of gaskets.
- Change of insulators and low and high voltage hardware.
- Review and change of measurement and control elements.
- Electrical tests.
- Vacuuming and blowing with nitrogen to dry transformers.
Maintenance of in-plant transformers
- Active part washing and stoving
- Dielectric oil change
- Gasket change
- Tank cleaning by mechanical or chemical attack
- Tank painting
- Routine electrical tests
- Type electrical tests (optional)
- Electrical test protocol
- Instrumentation revision
On-site and in-plant transformer electrical testing
We perform a wide range of electrical tests to provide the best advice and equipment diagnostics to our customers. These tests include:
- Transformer Ratio
- Insulation Resistance
- Winding Resistance
- Vacuum Test
- Short Circuit Test
- Applied Voltage Test
- Induced Voltage Test
- Impulse Test
- Partial Discharge Test
- Frequency Response Analysis (FRA)
- Power Factor Test.
Maintenance of transformers in plant 2
- Transformer Ratio
- Insulation resistance
- Winding resistance
- Vacuum tests
- Vacuum test and maintenance of transformers in plant 1
- Short circuit test
- Applied voltage test
- Induced voltage test
- Impulse test
- Partial discharge test
- Frequency Response Analysis FRA
- Power Factor Test
Maintenance in Power Substations up to 44KV
Preventive maintenance in an electrical substation is crucial to detect failures that may affect its operation:
- Detailed physical review of structures and components.
- General cleaning of the substation.
- Lubrication of mechanical components.
- Adjustment of electrical connections.
- Performance of mechanical, electrical and dielectric tests to ensure proper operation.
Transformer Repair
- Repair , manufacture or modification of one or more coils in both dry and oil-filled transformers
- Modification of voltages in both low and medium voltage.
Repair or modification of the tank.
Physicochemical Analysis of Mineral and Vegetable Dielectric Oil
We provide specialized diagnostic services for dielectric oil. These services include:
- Dielectric breakdown voltage (ASTM D877).
- Neutralization number (ASTM D974).
- Interfacial tension (ASTM D2285).
- Color (ASTM D1500).
Relative density (ASTM D1298).
- Moisture content in PPM (ASTM D1533).
- Oil quality index.
Thermographic service
Thermography is a technique that allows measuring temperatures without contact and at a distance, and also visualizing images formed by infrared radiation. In industrial preventive maintenance it is used in:
- High and low voltage lines.
- Control and power cabinets.
- Electrical junctions and hot spots.
- Distribution and power transformers.
- Electric motors.
