Current transformer for GIS is installed inside of GIS. It provides current signals for secondary measuring instruments.

Reference standard: GB1208-2006  Current Transformer

Voltage class：  110Kv-500Kv

Primary current: 50A-5000A

Secondary current: 1A /5A

Rated short time thermal current: 40KA/3s   50KA/3s    63KA/3s

Profile dimension: As per customer request
 
Product structure: secondary winding is wounded around the annular core. The instrument transformer and the supporting shielding cylinder can be connected by casting soldering.
 
Product features：We use high quality raw materials and optimize calculation, thus the product provides higher precision and higher load while meeting all the constraint conditions.

Acceptance inspections: 
1、 Visual inspection
2、 Terminal identification test
3、 Insulation resistance measurement
4、 Power frequency voltage withstand test for the secondary winding
5、 Polarity check
6、 Turn-to-turn Overvoltage Test
7、 Determination of accuracy and error
8、 Composite error determination
9、 Transient error determination(Only for transient transformer)