1. Stretch forming tank, no leak 2. Amorphous metals core 3. Japanese silicon steel core 4. 10 kV measuring instrument 30 yearshistory ... connected to A and C phase.The JLS-6, 10, metering tank is one upgraded product based on old product of ... voltage ct-pt measuring units combined Instrument transformer Technical dataMetering tank conforms to given provisions in GB17201-2006 ; ...