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) (ppmRD) Annex①+ppmRG②)			Maximum load Current (mA)
Range	0.1 class	0.05 level	0.02	0.1 class	0.05 level	0.02	Maximum load Current (mA)
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)			±(ppmRD) Annual accuracy①+ppmRG②)			Maximum load Voltage (V)
Current	0.1 class	0.05 level	0.02	0.1 class	0.05 level	0.02	Maximum load Voltage (V)
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
Output power stability (%/2 min)	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 *
Active power/electric energy apparent power \|cosΦ\|≥0.5	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 *
Reactive power/electric energy \|sin Φ\|≥0.5	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%
Power factor	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%