supply of ht static tri-vector energy meters for consumer metering. , isi marked, class-0.5s, three phase four wire, 110 volt, 5 amp. static ht tri-vector energy meter ( for consumer metering ) conforming to is:14697 / 1999, iec:62053-22 and cbip report no. 325, with its latest amendment and as per detailed technical specification given in annexure-vi ( a ) meeting all the minimum requirement specified in gtp appended in schedule-iv with supply of 1hhu free of charge for 100 meters along with gsm ( gprs enabled ) modem with accessories such as built in supply, external 5dbi helicalantenna with optical cable etc. as per technical specification given in annexure-vi ( c )