Energy Digital Meter For Public Area, Energy Meter With OEM ODM

Q Are you a factory or trading company?

AAs a manufacturer and supplier of electricity meters.Our sales center was located in Shanghai, with factory in Tongxiang city, Zhejiang province.

Q How is your quality and price?

AWe have strict and complete quality control system, and most favorable price will be given after evaluating your design and needs.

Q What is warranty of your products?

AGenerally speaking,the same as our industry,usually 2 years for components,15~20 years for meters, based on pratical situation.

Q What is the damage rates?

AAround 1%, in fact we believe that's conservative estimate value, no matter how we'll pay high attention on defective products and take action to make up our loss.

Q What is the full voltage loss condition of smart electric energy meter?

AIn the three-phase power supply system, if the three-phase voltage is lower than the critical voltage of the energy meter, and there is any phase or multi-phase load current greater than 5% of the rat...

Q What is the phase-off working condition of smart electric energy meter?

AIn a three-phase power supply system, when the voltage of a certain phase is lower than the set upper limit of the phase failure event voltage, and the phase current is less than the upper limit of th...

Q What is the loss-of-current operating condition of smart electric energy meter?

AIn a three-phase power supply system, at least one of the three phases' load current is greater than the lower limit of the current trigger event, and the voltage of a certain phase is greater tha...

Q What is the power-off condition of smart energy meters?

AThe supply voltage of the single-phase energy meter is lower than the starting working voltage of the energy meter; the supply voltage of the three-phase energy meter is lower than the critical voltag...

Q What is the reverse working condition of smart electric energy meter?

AIn a three-phase power supply system, when the direction of the total active power changes direction, at the same time, the active power is greater than the set active power reverse event active power...

Q What is the critical voltage of a smart energy meter?

AThe minimum voltage that the smart energy meter can start to work is the critical voltage, which is generally 60% of the reference voltage. The critical voltage stipulates the minimum voltage for the ...

Q What is the voltage imbalance of smart energy meters?

AWhen any of the three-phase voltages is greater than the critical voltage of the energy meter, the voltage imbalance rate is greater than the set voltage imbalance rate limit, and the duration is grea...

Q What is the current imbalance of smart energy meters?

AWhen any of the three-phase currents is greater than 5% of the rated (basic) current, the current imbalance rate is greater than the set current imbalance rate limit, and the duration is greater than ...

Q What is the voltage (current) imbalance rate of smart energy meters?

AIn a three-phase power supply system, the voltage (current) unbalance rate is the difference between the maximum phase voltage (current) and the minimum phase voltage (current) as a percentage of the ...

Q What is starting current of meter？

AThe starting current is the current value that determines the relevant characteristics of the meter, also called the calibration current value, which is determined by the starting current of the elect...

Q What are the general minimum starting currents?

AGenerally there are 0.2%, 0.4%, 0.5%. Take the current of 10 (80) A, IB 0.5% as an example. The starting current of this electric meter is 10*0.5%=0.05, which means that the electric current must reac...

Q What is the starting current value for direct and mutual inductance?

AFor the direct connection type electric energy meter, the starting current is: 0.004IbFor the electric energy meter with mutual inductance access, the starting current is: 0.002In.