Panel board smart Watt-Hour Meter
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Panel board smart Watt-Hour Meter

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Panel board smart Watt-Hour Meter

I Specifications and Parameters

1.Specifications

TYPE

CLASS

RATED  OLTAGE

STANDARD CURRENT

Three Phase Three Wire

Class 1.0

Class 2.0

3×100V

3×1.5(6)A

3×380V

3×1.5(6)A

Three Phase Four Wire

3×57.7/100V

3×1.5(6)A

3×220/380V

3×1.5(6)A

3×2.5(10)A

3×5(20)A

3×10(60)A

3×15(60)A

3×20(80)A

3×30(100)A

2. Basic Error(balanced load basic error limit)

Current   Value

Power   Factor(COSφ)

Error   limit(%)

Direct   Connection

CT   Connection

Class1

Class2

0.05Ib≤I<0.1Ib

0.02In≤I<0.05In

1.0

±1.5

±2.5

0.1Ib≤I<Imax

0.05In≤I<Imax

1.0

±1.0

±2.0

0.1Ib≤I<0.2Ib

0.05In≤I<0.1In

0.5(Inductive)

±1.5

±2.5

0.8(Capacitive)

±1.5

0.2Ib≤I≤Imax

0.1In≤I≤Imax

0.5(Inductive)

±1.0

±2.0

0.8(Capacitive)

±1.0

Note:(Ib is basic current  In is rated current  Imax is maximum current)

The error limit(%) between each current point with unbalanced load: Class1,±2.0; Class2,±3.0


3.Starting

When the rated voltage, rated frequency and power factor is 1.0, the loaded current is 0.004Ib(class1)、0.005Ib(class2), the meter shall starts and measures energy continuously.


4.Creeping

When the voltage circuit is loaded with a voltage 1.15 times of the rated voltage and there is no current in the current circuit, the meter is supposed not to output more than one pulse.


5.Working Voltage Range

 Normal Working Voltage:0.9Un~1.1Un

 Working Voltage Limit:0.0Un~1.15Un


6.Power Loss

Power loss of the voltage line in each phase≤2W/10VA

Power loss of the current line in each phase≤4.0VA


7.Environment condition

standard working temperature:-10℃~+45℃,    

working temperature limit:-25℃~+55℃

Storage and transport temperature limit:-25℃~+70℃

Relative humidity: annual average≤75%


8.Configuration and Dimension


9.Safety Performance

The product meets each safety index and requirement stipulated in GB/T 17215-2008

Display


10.The Energy is displayed on LCD in 7 digits, when the meter is on , it will first display the constant and then display the total energy as below.  

IV.Functions

1.Energy Measurement

It measures total active energy.With three phase power supply, the meter will keep measuring energy accurately even with one or two phases cut off.


2.Pulse output interface

Passive pulse output interface with optocoupler isolation. The pulse width is 80ms.

Schematic diagram of active pulse test port


3.Phase missing indication function

Three light indicators are used to indicate whether there is phase missing. Indicators A, B, and C indicate the missing of Phase A, Phase B and Phase C correspondingly.  


4.Communication Function

The meter has IR and RS485 interfaces. It is very convenient and reliable for the users to read the data via communication interface. The Baud rate of RS 485 9600.  


V. Installation and

Terminal Wiring



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