Liquid Filled Transformers

UP TO 30 MVA, 72 kV Class, 350 kV BIL

INSULATION SYSTEM
Standard : 105°C Insulation System

WINDING TEMPERATURE RISE
Standard : 65°C Average Winding Rise
Option : 55°C Average Winding Rise

TYPE OF COOLING
Standard : Natural Convection Cooling
Options : Natural Convection Cooling plus Forced Air Cooling with Fans to obtain 33% additional capacity

WINDING MATERIAL
Standard : Copper
Options : Aluminum
Combination of Copper and Aluminum

TAPS AND TAP CHANGER
Standard : Off Load Tap 2 -2.5% FCAN and 2-2.5% FCBN Tap Links and Terminal Board
Option : Designed to customer specification
On-Load Tap Changer

TERMINATIONS
Standard : HV and LV Top Cover Mounted Bushings
Option : Side Wall Bushings c/w Throat to customer specification or coordinated to switchgear/bus duct
Side Cable Boxes
Air Terminal Chamber

BASIC IMPULSE LEVELS
Standard : Designed to CSA Standard C88
Option : Higher Basic Impulse Level to customer specification

TYPE OF TANK
Standard : Sealed Tank c/w Bolted Cover
Options : Sealed Tank c/w Welded Cover
Suitable for Full Vacuum

COLOUR OF TANK
Standard : ASA 61 Grey Interior and Exterior
Option : ASA 61 Grey Exterior with White Interior
Painted to customer specification

RADIATORS
Standard : Welded On
Option : Bolted On
Removable Radiators c/w Shutoff Valves

IMPEDANCE RANGE
Standard : Designed to CSA Standard C88
Option : Designed to customer specification subject to constructional and short circuit performance constraints

AVERAGE AUDIBLE SOUND LEVEL
Standard : Designed to CSA Standard C88
Option : Designed to customer specification subject to physical constraints

TESTS
Standard : All Production Tests per CSA Standard C88
Options : Temperature Rise
Sound Level
Radio Influence Voltage
Partial Discharges (Corona)
Basic Insulation Impulse Level

STANDARD ACCESSORIES
Liquid Temperature Gauge
Liquid Level Gauge
Pressure Vacuum Gauge
Pressure Relief Valve
Pressure Relief Device
1” Filling Valve with Plug
1” Drain Valve with Sampling Plug

OPTIONAL ACCESSORIES
Winding Temperature Indicator
Fiber Optic Temperature Probes with Monitor
Sudden Pressure Relay
Fans
Power Supply Transformer
Lightning Arrestors
Special Identification
Tamperproofing
Interlock Switch
etc