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Repair of static excitation system

  Posted by D.Devarajan on Thursday, May 11 2006

Please this informed that our company is engaged in the operation and maintenance of 30 MW power house at Al Djafra Abudhabi. The station is equip[ed with 5 Nos 7.5 MVA generators with following deatails.

Make: garbe Lahmeyer & Co.
Order No: 1102825012
Type: DSM 1400/87-10 hp
7500 kva,394 Amps,600 rpm, 50 Hz.
Inductor voltage 175, Inductor current 95 A

For their all it is noticed that brushless excitation system has been supplied by M/s GL with details as below

Type: DDE 850/6.5-32 f 160
Out put 26.4/84.5 Kva
Voltage 179/321 V
Current 85/152 A

Presently we are noticed that one no: varistor installed across the output terminals of the rotating diodes are burnt and to be replaced. However the details are not forthcoming. Thus your valuable assistance is requiered for the procurement of the same and the future requirements. For further clarifications if requiered please feel free to contact us.
Thanking you,

With regards

R.Devarajan
Senior Manager Emco.
Phone: +971 26340600
Mob:+971506671894
Fax:+97126329491



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