supply of supply and testing of 03 nos abt meters with rs232 rs485 and ethernet ports with dlms protocol. system: 3 phase 4 wire, pt ratio: 132kv root3/110v root3, ct ratio : 300/1a with accuracy class: 0.2s make:secure apex150 or l&t make or similar to other make. note: the meters testing should be done at nabl lab testing in the presense of railway aptransco apspdcl officials.supply and testing of 03 nos abt meters with rs232 rs485 and ethernet ports with dlms protocol. system: 3 phase 4 wire, pt ratio: 132kv root3/110v root3, ct ratio : 300/1a with accuracy class: 0.2s make:secure apex150 or l&t make or similar to other make. note: the meters testing should be done at nabl lab testing in the presense of railway aptransco apspdcl officials.,supply and testing of 03 nos abt meters with rs232 rs485 and ethernet ports with dlms prot ocol. system: 3 phase 4 wire, pt ratio: 132kv root3/110v root3, ct ratio : 300/1a with accuracy class: 0.2s make:secure apex150 or l&t make or similar to other make. note: the meters testing should be done at n abl lab testing in the presense of railway aptransco apspdcl officials. [ warranty period: 120 months after the date of delivery ] => limited