THREE PHASE TRANSFORMER PEDESTAL TYPE 500 KVA, 10.5/0.23 KV
FOR WORKING IN ALTITUDE OF 3500 M.O.S.L.
Ítem | Descriptión | Unit | Required | Guaranteed |
1 | GENERAL DATA |
|
|
|
1.1 | Manufacturer |
| To indicate | HEMG |
1.2 | Country |
| To indicate | P.R.China |
1.3 | Brand |
| To indicate | HEMG |
1.4 | Power | KVA | 500 | 500 |
1.5 | Number of coils |
| 2 | 2 |
1.6 | Number of phases |
| 3 | 3 |
1.7 | Altitude of operation |
| 3500 | 3500 |
1.8 | Mounting |
| Outdoor | Outdoor |
2 | NOMINAL DATA AND CHARACTERISTICS |
|
|
|
2.1 | NominalFrequency | Hz | 60 | 60 |
2.2 | Nominal Voltage High voltaje side without load | KV | 10.5+/-2x2.5% | 10.5+/-2x2.5% |
2.3 | Nominal Voltage low voltage side without load | kV | 0.230 | 0.230 |
2.4 | Insulation level high voltage |
|
|
|
| Insulation Class | KV | 12 | 12 |
| Impulse Withstand Voltage 1.2/50 of external insulation | kVp | 125 | 125 |
| Impulse Withstand Voltage 1.2/50 of internal insulation | kVp | 75 | 75 |
| Withstand voltage industrial frequency | KV | 28 | 28 |
| Number of terminals in the primary side |
| 6 | 6 |
| Material of the coils |
| Copper | Copper |
| Bridge capacity for work in mesh or ring. | Amps | 200 | 200 |
2.5 | Insulation level low voltage side |
|
|
|
| Insulation Class | KV | 1.1 | 1.1 |
| Withstand voltage industrial frequency | KV | 3.0 | 3.0 |
| Material of the coils |
| Copper | Copper |
| Number of terminals in the secondary side | u | 3 | 3 |
2.6 | ConnectionGroup |
| Dyn5 | Dyn5 |
2.7 | Type of working |
| Meshor ring | Meshor ring |
2.8 | Shortcircuit voltage at 75 C | % | 4 | 4 |
2.9 | Losses | VA | 30 | 30 |
| Losses in the iron (% Nominal Power ) |
| 1179 w | 1179 w |
| Losses in the copper with full load (% Nominal Power ) |
| 6540 w | 6540 w |
2.10 | On temperature rise ( Limit Max Power ONAN ) |
|
|
|
| On temperature rise in the hot point of the coils | C | 65 | 65 |
| On temperature rise of the oil in the top side of the tank | C | 60 | 60 |
2.11 | Type of Oil
|
| Mineral, free of PCBs | Mineral, free of PCBs |
2.12 | Standard for design, manufacture and test reports |
| Indicate | IEC60076 |
2.13 | Standard for capacity of overload |
| Indicate | IEC60076 |
2.14 | Standard for insulation oils |
| Indicate |
|
2.15 | Standard for the bushing plug type |
| Indicate | IEC60076 |
2.16 | Standards for guaranteed losses |
| Indicate | IEC60076 |
3.0 | Equipments |
|
|
|
3.1 | Cabin of Medium Voltage |
| Yes | Yes |
| Load Break switch submergible in oil, arranged such as to allow the primary network continue without interruption even when the transformer is out of service. |
| Yes | Yes |
| Hold fuse Bay -O-Net type
|
| Yes | Yes |
| Fuses system Bay -O-Net current sensing |
| Yes | Yes |
| Current limiting fuses |
| Yes | Yes |
| Resyn insulators for system of connector plug-in |
| Yes | Yes |
| Lock of the door |
| Yes | Yes |
| Support of parking |
| Yes | Yes |
| Plugs connector for Medium Voltage cubit type |
| Yes | Yes |
| Kit of grounding of plugs connectors |
| Yes | Yes |
3.2 | Cabin of low voltage |
| Yes | Yes |
| Porcelain Insulators |
| Yes | Yes |
| General Circuit Breaker for low voltage |
| Yes | Yes |
| Auxiliar Circuit Breaker for low voltage |
| Yes | Yes |
| interlocking for the door |
| Yes | Yes |
| Lock of the door |
|
|
|
3.3 | Transformation Module |
| Yes
| Yes
|
| Indicator of oil level |
| Yes Yes | Yes Yes |
| Drain tap |
| Yes | Yes |
| Lifting ears |
| Yes | Yes |
| Nameplate |
| Yes | Yes |
| Vacuum tap changer |
| Yes | Yes |
| Terminal for grounding |
| Yes | Yes |
| Viwefinder of oil level |
| Yes | Yes |
| Well for measure temperatures |
| Yes | Yes |
3.4 | Telescopic pole operation of 6 bodies, 33 KV |
| yes | yes |
