Phone: 503-595-5418
Fax: 503-595-0091
Email:milt@rmaglobal.com
Email: sales@rmaglobal.com Phone: (503) 595-5418 Fax: (503) 595-595-0091 Copyright 1995-2006: RMA Inc.
ONE 100MVA TRANSFORMER NEEDED
169kV / 34.5kV Y-Y 60Hz.
Or Alternatives Needed
Contact
Milt Fyre for more details.
Phone: 503-595-5418 milt@rmaglobal.com
Requirements:
Type Three Winding
Rated frequency Hz 60
Phase 3
Primary Voltage kV 169kV Gnd. Wye
Secondary Voltage kV 34.5kV Gnd. Wye
Tertiary Winding Configuration Buried Delta (MVA rating equal to 35%)
Class ONAN/ONAF/ONAF
Coolant Mineral Oil per ASTM D3487 - latest revision
Temperature Rise
By Resistance 55°C/65°C
Hottest Spot 65°C/80°C
Continuous rating (ONAN) MVA 60
Continuous rating (ONAF) level 1 MVA 80
Continuous rating (ONAF) level 2 MVA 100
BIL Levels, Windings
HV Windings 750kV
LV Windings 200kV
BIL Levels, Bushings
HV Windings 200kV
LV Windings 150kV
HO Neutral
Transformer Impedance % 9.5
Number of DETC tapping positions 5
Tapping range and steps % (+)5% to (-)5% in 2.5% steps
Surge Arresters MCOV Rating
Primary Side (Station Class) 98kV
Secondary Side (Station Class) 22kV
Auxiliary source voltages Vac
240 Vac, single phase
125 Vdc
161 kV Bushing Current Transformers
Metering/Relaying
qty 2 per bushing
Current ratio 600:5 MR
Thermal Rating Factor 1.0
ANSI Accuracy Class C800
Neutral Current Transformer qty 1 per bushing
Current ratio 1200:5 MR
Thermal Rating Factor 1.0
ANSI Accuracy Class C800
34.5 kV Current Transformers
Metering/Relaying
qty 2 per bushing
Current ratio 2000:5 MR
Thermal Rating Factor 1.33
ANSI Accuracy Class C800