Electrical Transformers
Reference: 3544/2020 12/2/2020, Location: Middle East
Category: Transformers
Scope of Work
The company announces its need for Electrical Transformers.
- 3.3 KV/400-231 V, 3 Phase, 50Hz, oil filled naturally cooled, outdoor type, DYN11 as group factor:-
a- Cable box for HV\LV IP55.
b-Transformer with offload taps changer the tap ±5% in step of 2.5%.
c- Transformer size shall be based on 55șC
1- Conservator.
2. Bucholes relay with alarm and trip contacts
3. Dial thermometer with alarm and trip contacts
4. Bi-directional roller.
5. Winding temperature rise should be 50c above ambient temp.
6. Oil temperature rise should be 45c above ambient temp.
7. Oil drain valve for maintenance
8- Voltage impedance 6%
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