OLTC with diverter switch in the vacuum chamber
OLTC with diverter switch in the vacuum chamber
(OP)
We are in the process of procuring 33/11.5 kV, 40/50 MVA, Delta/wye power transformers for an oil & gas processing plant. The 11 kV side neutral is resistively earthed though 400 A Neutral Grounding Resistor (NGR).
The transformers are specified to have On Load Tap Changer (OLTC). One of the vendors is offering the OLTC with diverter switch in the vacuum. Conventionally, the OLTCs are with oil filled diverter switch. If the OLTC operation is frequent, the OLTCs with oil filled diverter switch are prone to give trouble.
I am accustomed with the conventional OLTC having oil filled diverter switch. I would like to know whether anyone has experience in the OLTC having the diverter switch in the vacuum. I would appreciate your view and share your experience on this.
The transformers are specified to have On Load Tap Changer (OLTC). One of the vendors is offering the OLTC with diverter switch in the vacuum. Conventionally, the OLTCs are with oil filled diverter switch. If the OLTC operation is frequent, the OLTCs with oil filled diverter switch are prone to give trouble.
I am accustomed with the conventional OLTC having oil filled diverter switch. I would like to know whether anyone has experience in the OLTC having the diverter switch in the vacuum. I would appreciate your view and share your experience on this.






RE: OLTC with diverter switch in the vacuum chamber
RE: OLTC with diverter switch in the vacuum chamber
Is the vacuum type OLTC so common in use?
Is it more reliable than oil type?
Appreciate your inputs.
RE: OLTC with diverter switch in the vacuum chamber
http://www.spxtransformersolutions.com/assets/documents/ARDB2.pdf
RE: OLTC with diverter switch in the vacuum chamber
RE: OLTC with diverter switch in the vacuum chamber
RE: OLTC with diverter switch in the vacuum chamber
RE: OLTC with diverter switch in the vacuum chamber
RE: OLTC with diverter switch in the vacuum chamber