Oil cooled Current Transformer
cooled transformers are made for use on various systems ranging from
11kv to 33kv. the basic construction of the CT is similar to CT of
all voltage classes in that the core is placed in a tank mounted on
top of the bushing and adequate paper insulation is provided on it.
The secondary leads are run through the bushing to the secondary
terminal box placed at the bottom of the bushing.
specification for a 11 kV CT
Insulation level voltage (ILV) : 12/28/75 kV
200/1 - 1 - 0.577 A
Core 1: 1A, metering, 15 VA/class 1,
Core 2: 1 A, protection, 15 VA/5P10
0.577 A, Class PS, KPV>= 150 V, Imag at Vk/2 <=30 mA,
RCT at 75 C<=2 ohms
Short time rating:20 kA for 1 second