Main specification and technical parameter

2.1 Specification of electric energy meter:

Note: In the rated current column, the values before parentheses are the calibrated current valuesIbThe value in parentheses is the rated * high current valueImax.

2 Technical parameters

2.1 Error Limit:

Basic error limit of electric energy meter with load

2.2 Start up

In terms of reference voltage, reference frequency, andCOSΦ=1Under the given conditions,0.5The level table is0.3Ib%,1.0The level table is0.4Ib%At this time, the energy meter can start and continuously measure electrical energy.

2.3 Submersion

When there is no current in the current circuit of the energy meter and the voltage applied to the voltage circuit is at the rated value115%The test output of the electric energy meter should not generate more than one pulse.

2.4 Insulation performance

The waveform that all lines of the electric energy meter can withstand between the outer shell is1.2//50μsThe peak value is6KVPulse voltage, continuous tests at different polarities10Secondly, there is no occurrence of arc discharge or breakdown. The frequency that all circuits of the electric energy meter can withstand between the case or the metal parts that can be touched outside the case is50HzThe actual sine waveform AC voltage2KVThe test lasted for one minute without breakdown.

2.5 Working voltage limit:70%~130%Ub

2.6 Power consumption: ≤2Wand10VA

2.7 Display: LCDdisplay

2.8 Data Storage:After power failure, data should be saved at least10Year.

2.3 Digital Communication:

The instrument provides asynchronous half duplexRS485Communication interface, connected to the upper computer or backend monitoring system.

3Installation and use

3.1 Installation precautions and methods

When the electric energy meter is taken out of the original packaging box, if damage is found to the inner packaging or outer shell, do not install or power on the meter. Please contact our technical service department

3.1.2 Experienced electricians or professionals are required to install the energy meter and ensure that they have read this manual thoroughly.

3.1.3 The electric energy meter should be installed in a ventilated and dry indoor area, using35mmDINStandard rail installation.

3.1.4 When installing wiring, follow the wiring diagram on the energy meter housing or the corresponding wiring diagram in this manual. It is recommended to use multi strand copper wire to avoid abnormal operation or burning of the energy meter due to poor contact.

3.2 Instructions for use

3.2.1 When using an electric energy meter in areas with frequent lightning strikes, lightning protection measures should be taken to avoid damaging the meter due to lightning strikes.

3.2.2 The load capacity of an electric energy meter iszero point zero fiveIb~1max(Direct access type) or0.02 Ib~1max

Exceeding this load capacity between (connected through transformers) will result in inaccurate measurement of the energy meter or burning of the current coil due to heating.

3.2.3 When an electric energy meter is used with a transformer, that is, an electric energy meter connected through a current transformer must multiply its electric energy reading by the transformer multiplier to obtain the actual electricity consumption.3.2.4 Pulse indication: When the pulse indicator light is on, it indicates the detection of a power pulse (when there is a sampling signal, the pulse indicator light will light up approximately)80ms

）

3.2.5 Data Display Board Format

The LCD display types are as follows:Total energy consumption display0.00-For example, in the following figure: The total electricity value is

4KW h

Transportation and Storage4.1 The transportation and unpacking of electric energy meters should not be subjected to severe impacts, and should be carried out according toZBY002-81

According to the Basic Environmental Conditions and Test Methods for Transportation and Storage of Instruments and Meters, transportation and storage are regulated.4.2 The electric energy meter should be stored in its original packaging box at an ambient temperature of-30~+65℃, relative humidity not exceeding95%

And there should be no gas in the air that can cause corrosion, and the ambient temperature should not change dramatically.

54.3 The electric energy meter should be placed on the rack in its original packaging condition, with a stacking height of no more than five boxes. After unpacking, the stacking height of a single packaged electric energy meter should not exceed five. The electric energy meter after unpacking the inner packaging (plastic bag) should not be stored.

Measurement methodThe electric energy meter is equipped with a photoelectric coupling type electric energy pulse test output port, located on the terminal box, which connects the testing equipment+5VdcConnect the signal wire to terminal ⑥ (positive pole)

6s

Simply connect to terminal ⑤ (negative pole).

Outline drawing and wiring diagram