Date: August 2013
Company: Pucobre / Copiapó – 3º Region.
Service of unite substation reparation 1500 KVA 23000/4160 – 2402 V, Comtrafo brand, and the integral maintenance to the medium voltage cell.
- Complete visual reparation of parts and pieces of the substation.
- Initial electric check and measuring to the transformer.
- Enrolled resistance 23 kV, 4.16 kV
- Insulation resistance 5000 Vdc
- Disarming, revision, cleaning and washing of the active part of the transformer (coils and nucleus)
- Oven thermic treatment to evacuate the humidity in the active part of the transformer.
- Integral replacement of the three coils AT/MT, 23/4160 kV, 1500 kVA
- Replacement of the section of the damaged nucleus of the transformer.
- Internal connexion and change of the damaged insulations.
- Change of tap packages and transformer insulators.
- Change of the internal damaged insulators of the substation.
- Integral arming of the transformer.
- Change of the dielectric mineral oil endowment (1090 l.)
- Vacuum pond treatment and filling the oil endowment to the transformer.
- Leak tests with nitrogen 0,75 kg/cm2.
- Weather-type epoxy painting treatment (pearl grey) to the substation.
- Complete electric tests to the transformer and cells in our laboratory according to ANSI C-57.12.90 norms, with the appropriate emission of proves certificate.
- Packaging of the substation for transport.
Details of the transformer: Year: Nov. 2010 Number Serial: 42837
Condition | REVISION | Insulating Lquid | Liquid Mineral Oil | Nominal Tap: 4 | |
Charge | _____2334____ | Quantity | 1090 Lts. | Tap 1: 24255 | |
Power | 1500 kVA | Total Weight | 4000 Kgs. | Tap 2: 23678 | |
Tests Date | 02/08/2013 | Frequency | 50 Hz | Tap 3: 23100 | |
Primary Voltage | 23000 Volts | Altitude Operation | 1000 M.S.N.M. | Tap 4: 22523 | |
Secondary Voltage | 4160 – 2402 V. | Class | 25 kV | Tap 5: 21945 | |
Connection | Dy-1 | BIL | 150 kV | Fases: 3 | |
MT Current | 37,49 Amp. | Refrigeration | ONAN | TYPE: DISTRIBUTION | |
BT Current | 208,18 Amp. | Polarity | SUBTRACTIVE | ||
PROPRIERTY: Pucobre | Archivo: |