JIS C 1263:1995被替代
Var-hour meters
出版：Japanese Standards Association
專家解讀視頻
This Japanese Industrial Standard specifies the var-hour meters with or without transmitter which are used in combination with instrument transformer or are used the summation measurement of energy in multicircuits of current composing system, in three-phase 3-wire system and three-phase 4-wire system. Further, matters other than specified in this Standard shall be in accordance with JIS C 1210. Also, for meters with auxiliary device, this Standard shall apply to the var-hour meter the condition where the auxiliary device is attached. In this Standard, instrument transformers used in combination with multicircuit summation meters shall be in accordance with Annex 1, and the combination with transformer and allowable limit of overall error shall be in accordance with Annex 2.
