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TD4550 Three-phase Watt-hour Meter Portable Check Device

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Product Overview

TD4550 is a special for the verification of three-phase AC watt-hour meter, power meter portable instrument, its built-in three-phase standard source, with 0.02/0.05/0.1 level of three specifications optional. The basic electric energy error detection, watt-hour meter constant test, standard deviation, starting test, latent test and so on can be completed by using one equipment. Reference criteria: GB/T 11150-2001、JJG 597-2005、JJG 307-2006、JJG 596-2012, etc.


Functional Characteristics

  • At full load, the maximum output of the three-phase standard source V /120A,456 can guarantee the stability of the output value.

  • Current output minimum to 2 mA, is the basis for starting test of the tested energy meter.

  • Value adjustment has rotary encoder, bit adjustment, step ratio and other ways, can be three-phase adjustment or phase adjustment.

  • Phasor diagram shows: arbitrarily adjust the phase between three-phase electricity, and through the form of phasor diagram visual display.

  • Man-machine function: equipped with large-scale LCD touch color screen, visual value display, convenient operation.

  • Harmonic function (optional): can load 2~21 times, amplitude / phase adjustable harmonics, harmonic impact test.

  • Professional software (optional): support semi-automatic, automatic verification; data management, certificate export.


Main Application (0.05 level)

  • Calibration or verification of a three-phase active power watt-hour meter S 0.2 and below, a three-phase reactive power meter of 0.5 and below

  • Verification or calibration of a three-phase active power meter S 0.2 and below, a three-phase reactive power meter of 0.5 and below

  • Verification or calibration of three-phase AC voltmeters, ammeters, frequency meters, power factor meters, etc. of Class 0.2 and below

Technical Specifications


Three-phase voltage output

Range

Short-term   stability (%/ min)

Measurement   uncertainty (k =2)

(ppm*RD)   Annex①+ppm*RG②)

Maximum load

Current (mA)

0.1 class

0.05 level

0.02

0.1 class

0.05 level

0.02

57.7 V

0.02

0.01

0.005

600+400

300+200

120+80

500

100V

0.02

0.01

0.005

600+400

300+200

120+80

300

220V

0.02

0.01

0.005

600+400

300+200

120+80

130

380V

0.02

0.01

0.005

600+400

300+200

120+80

80

Note :1 RD read value ,2 RG range value, the same   below

  • Three-phase voltage output range :6 V ~456 V, distortion :<0.5 per cent

  • Degree of symmetry: voltage over 0.2%, phase over 0.5°

  • Protection function: voltage short circuit protection, overload protection


Three-phase current output

Current

Short-term stability (%/ min)

±(ppm*RD) Annual accuracy①+ppm*RG②)

Maximum load

Voltage (V)

0.1 class

0.05 level

0.02

0.1 class

0.05 level

0.02

20mA

0.02

0.01

0.005

600+400

300+200

120+80

24

50 mA

0.02

0.01

0.005

600+400

300+200

120+80

24

100 mA

0.02

0.01

0.005

600+400

300+200

120+80

24

200mA

0.02

0.01

0.005

600+400

300+200

120+80

24

500mA

0.02

0.01

0.005

600+400

300+200

120+80

24

1A

0.02

0.01

0.005

600+400

300+200

120+80

24

2A

0.02

0.01

0.005

600+400

300+200

120+80

6

5A

0.02

0.01

0.005

600+400

300+200

120+80

6

10A

0.02

0.01

0.005

600+400

300+200

120+80

2

20A

0.02

0.01

0.005

600+400

300+200

120+80

2

50A

0.02

0.01

0.005

600+400

300+200

120+80

0.6

100A

0.02

0.01

0.005

600+400

300+200

120+80

0.6

  • Three-phase current output range :2 mA ~120 A, distortion :<0.5

  • Symmetry: current is better than ±0.5, phase is better than ±0.5°

  • Protection function: current open circuit protection, overload protection


Frequency/phase/harmonics

  • Frequency range :45.000 Hz~65.000 Hz

  • Regulation fineness :0.001 Hz; annual measurement uncertainty (k=2):±0.01 Hz

  • Phase adjustment range :0.000°~°359.999

  • Regulation fineness :0.005°; annual measurement uncertainty (k=2):±0.1°

  • Harmonic (optional):2~21; amplitude 0~25, phase 0.0°~359.9° adjustable


Power/power measurement

Type

Current range

0.1 class

0.05 level

0.02

Output power stability (%/2 min)

50 mA ≤I≤120 A

0.05

0.02

0.01

2 mA ≤I<50 m   A

0.05

0.03

0.02

Active power/electric energy

apparent power

|cosΦ|≥0.5

50 mA ≤I≤120 A

0.1% RD *

0.05%* RD *

0.02%* RD *

2 mA ≤I<50 m   A

0.2% FS *③

0.1% FS *

0.05%* FS *

Reactive power/electric energy

|sin Φ|≥0.5

50 mA ≤I≤120 A

0.2% FS *

0.1% FS *

0.05%* FS *

2 mA ≤I<50 m   A

0.5% FS *

0.2% FS *

0.1% FS *

Power factor

50 mA ≤I≤120 A

0.1%

0.05%

0.02%

2 mA ≤I<50 m   A

0.2%

0.1%

0.05%

Note 3 FS = Voltage range value × current range value

  • Power/electricity measurement range: combination of AC voltage range and AC current range

  • Power factor measurement range :-1.000 00…0.000 00…1.000 00

  • Standard power pulse output: high frequency full range value corresponds to 60 kHz, low frequency full range value corresponds to 6 Hz

  • Standard power pulse input: frequency ≤150 kHz, voltage :0.3.3 V…24V

  • Power Error Display: Automatic, Resolution 0.0001%

General Technical Specifications


  • Power supply: AC (220±22) V,(50AC (220±2) Hz

  • Working environment :0℃~40℃,20~80% not exposed

  • Storage environment :-20℃~70℃,<80% not exposed

  • Size :490 mm (W)×485 mm (D)×200(H)

  • Equipment quality: approximately kg 29.0

  • Communication interface: RS232


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