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| Item | Technical index |
| accuracy class | Active level 1/level 2 |
| voltage specification | 3*220 / 380V |
| Current specification | 3*1.5(6)A 3*5(20)A 3*5(30)A 3*10(40)A 3*15(60)A 3*20(80)A 3*30(100)A |
| Reference frequency | 50Hz or 60Hz |
| operating voltage range | 0.9Un - 1.1Un |
| operating temperature range | -25℃ - +55℃ |
| power dissipation | ≤2W/10VA |
| display usage | LCD, Six integer,2 decimal places |
| technical standard | GB/T17215.321-2008,GB/T18460.3-2001 |










| problem describe | specific reasons | how to resolve |
| The kilo-watt-hour meter can't read the card,or the card can't recharge | 1.the card surface polluted or corrosion | clean the surface of card or replace a new card |
| 2.Not reset(zero clearing) before use | reset(zero clearing) before recharge | |
| 3.The card is inserted in the wrong direction | retry in the direction of the arrow | |
| 4.The card not corresponds to the meter | replace a new card | |
| 5.Card writing failed in charging management system | reading card information,reset or replace a new card | |
| 6.kilo-watt-hour meter problem | replace a new kilo-watt-hour meter | |
| 7.the card is damaged | replace a new card |
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