Oil-Cooled Distribution Transformer with OLTC (On Load Tap Changer)
RANGE : Upto 10 MVA in 11, 22, 33 & 66 KV Class.
Golden Transformer & Servo offers an extensive range of Oil-Filled Distribution Transformers with On-Load Tap Changer (up to 10000 KVA in 11 KV & 33 KV Class) that adhere to international standards of quality and safety. These transformers are designed and developed using the latest technologies and can be equipped with various terminations to meet the demands for new installations or replacements.
Optimum efficiency is ensured through careful proportioning of core and winding losses, employing CRGO M3 to M5 MOH Lamination, Electrolytic Grade 99.9% pure copper, along with transposition in L.V. coils for current sharing in parallel conductors, electric-grade press paper, boards, and mineral oil. This approach results in improved regulation, leading to an extended lifespan. Meticulous design also minimizes noise levels to the bare minimum.
| STANDARD SPECIFICATIONS |
|
| Capacity |
Up to 10 MVA |
| No. of Phases |
3 Phase |
| Frequency |
50 Hz. |
| Voltage Range |
11 KV / 22 KV / 33 KV / 66KV |
| Tapping |
+5% to -5% Taps on H.T. Side in steps of 2.5% each. |
| Insulation |
Class ‘A’ |
| Vector Group |
Dyn 11 |
| Duty Cycle |
Continuous |
| Winding |
Copper Wound |
| Terminals |
As per required |
| STANDARD FITTINGS |
|
| Rating & Diagram plate |
Earthing terminals |
| Lifting lugs |
Thermometer pocket |
| Oil Conservator with drain plug |
Air release hole with plug |
| Oil Level indicator |
Explosion vent with diaphragm |
| Top-filter Valve |
Inspection cover. |
| Silica gel breather |
Drain –cum-bottom-filter valve |
| Cooling radiators |
Uni / Bi- directional rollers |
| OPTIONAL FEATURES |
|
| Buchholz relay with alarm and trip contact |
Magnetic oil level gauge with alarm contact |
| Pressure Release Valve |
Marshalling box to house O.T.I. and W.T.I |
| Cable Box on H.T. Side |
Cable Box on L.T. Side. |
| Oil Temp. Indicator with alarm & trip contact |
RTCC (Remote Tap Changer Control) Cubicle |
| Winding Temp. indicator with alarm & trip contact |
Electronic Automatic Voltage Controller |
