arjun_athi
Member
- Location
- SAUDI ARABIA
Please assist me to get the calculation for the stabilizing resistors to be used in high impedance bus bar protection for the current operated relays.
Below are the details for the same
Relay to be used: 7 SJ64
CT Ratio: 2000/1
Number of Feeders: 10
Loop resistance two way: 1.28 Ohms
CT Resistance; 5 Ohms
Number of CTS in Parallel: 05
Number of Zones: 4+ Check Zones
Operating current for the disc Zone: 1 A
Check Zone: 0.75 Ohms.
Please let me know how to select the resistor value and wattage level.
Thanks in advance.
Arjun Athiyaman.
JAL International.
Below are the details for the same
Relay to be used: 7 SJ64
CT Ratio: 2000/1
Number of Feeders: 10
Loop resistance two way: 1.28 Ohms
CT Resistance; 5 Ohms
Number of CTS in Parallel: 05
Number of Zones: 4+ Check Zones
Operating current for the disc Zone: 1 A
Check Zone: 0.75 Ohms.
Please let me know how to select the resistor value and wattage level.
Thanks in advance.
Arjun Athiyaman.
JAL International.
