( high-pressure metering box ) on-site inspection of the content , including what ? Let us enumerate need to check the contents of the next .
voltage sensor one , check the external
there should be no impact on the correct measurement factor.
there should be more pressure around the case of electricity metering devices ;
Second, check the seal and related wiring and metering
access through current transformer secondary current energy meter connection before the table should not be shorted or open , the insulation should not be damaged , and with the power meter ( or energy metering dedicated junction box ) connected correctly good and reliable ;
meter boxes, meter junction boxes, meter housing , energy measurement special junction box cover , box , current transformer secondary wiring side button closure and other electricity sector or verification of measuring instruments sector plus the seal should not be is turned on or forged , all seal number should be the last inspection or installation numbers ;
contiguous voltage meter connected to the junction box should be a good and reliable ; special junction box metering current and voltage connection piece should be positioned properly and well-connected and reliable ;
meter into the outlet should not
hall effect transducer be short-circuited before the table or scorched , damaged ; meter boxes and junction boxes dedicated energy metering should not scorch marks ;
low voltage lines measured in contact with the power line should be a good and reliable and should not be broken or damaged insulation , insulation wrapped connection point should be intact ; pressure measured secondary voltage wire in contact with the terminals should be a good and reliable ; measured voltage line with the energy meter ( or energy metering dedicated junction box ) connections should be correct, good and reliable .
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