1.2 The measure ratio is about 2 to insure the meter has the highest accuracy in the measuring range.

1.3 Strong measuring functions: three phase four wires active energy, three phase three wires active energy, three phase three wires sine reactive energy, three phase four wire 90° reactive energy, three phase three wires 60°reactive energy.

1.4 Easy to operate: there are 5 operating buttons at the bottom of  the screen, which are corresponding with the reminding symbols on the screen.

1.5 The standard meter has RS-232 communication interface, which can communicate with PC in two ways. It can transmit the measuring data to PC as well as measure automatically controlled by PC.

2.1  Input characteristics

2.1.1 Voltage input

Input range（V） 40—480

Input measuring range（V） 60、120、240、480

Overload Voltate（V）600

Input load     ≤0.5mA（480V）

2.1.2 Current input

Input range（A） 0.01—100

Input measuring range（A）100、50、25、10、5、2.5、1、0.5、0.25、0.1、0.05、0.025

Overload current（A） 150

    Input overload     ≤0.2mΩ（100A—0.25A）

              ≤0.3Ω  （0.25A—0.01A）

2.2 Output characteristics               

2.2.1 Output frequency of pulse

   f =C ·P/3600        （H ）

   f =f /10000          （H ） 

2.2.2 Output level：TTL level

2.2.3 pulse constant

     Pulse constants table of high frequency  Table 1.C （P/kwh）

Pulse constant of low frequency  C =C /10000

2.3 Accuracy

2.3.1 Class ：0.05 or 0.1

2.3.2 Accuracy of power measurement

Accuracy of active power measurement: 0.05%、0.1%（PF≥0.5）

Accuracy of reactive power measurement: 0.1%、0.2%（PF≥0.5）

2.3.3 Accuracy of energy measurement

 Accuracy of active energy measurement:0.05%、0.1%（PF≥0.5）

 Accuracy of reactive energy measurement:0.1%、0.2%（PF≥0.5）

2.4 Display

2.4.1 Items of display : three phase voltage : UL1、UL2、UL3（V）

 Three phase four wires  UL1、UL2、UL3 mean U 、U 、U

     Three phase three wires U12、U23、U31 mean U 、U 、U

 Three phase current IL1、IL2、IL3（A）

 Active power：P（W）

 Apparent power：S(VA)

 Reactive power：Q（VA）

 Power factor：Pf -1.0000—1.0000

 Phase angle：θ（0°—360°）

 Frequency of input signal：F（H ）

2.4.2 Display digits：5 digits

2.5 Power supply: 220V±10%、50H ±5%  Power consumption：About20VA

2.6 Pre-heated time： 30 min

2.7 Working circumstances :

Temperature: 5℃—40℃

Relative Humidity ≤85%

Noncorrosive gas

2.8 Outline dimensions：482mm×480mm×140mm

2.9 Net weight：About 10Kg

Yueqing Gomelong Meter Co., Ltd.

Year Established: 2010

Business Type:Manufacturer and Trading Company

Management Certifiation: ISO9001

Operational Address: (Inside Zhejiang Yizhou Electromechanical Co., Ltd.) Xiangyang Ind. Zone, Liushi Town, Yueqing, Wenzhou, Zhejiang, China (Mainland)