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General:

l Class 0.02% /0.05% for active and reactive energies, over the entire load range & independent of the measuring mode.

l There are three ports for pulses to output. And its constants can be set automatically or manually. Types of constants can be set also: active power, reactive power, apparent power, voltage, and current.

l Adjustment of electric energy error: it can adjust the estimate value of standard deviation and computation error of electric energy meters as well as calibration device for energy meter. Moreover, counts of pulse and constants of meters to be checked can be set automatically so as to work effectively. Especially for the multi-constant standard meter and the energy meter calibration device, it will be more convenient. By adopting the use of special compensation techniques, error-beating would not be large because of the small load (the low frequency of the energy pulses). It can display the current error, the value of the standard deviation estimate and the average error.

l Multiple ports for communication: RS485, RS232, USB, and baud rate can be set when using asynchronous communication.

l The measuring range can be switched manually or automatically.

Key Function:

n It has ability to measure AC voltage, current, power (active power, reactive power, apparent power) and electric energy in four-quadrant with connection modes such as 1P2W and 3P4W (Y) / 3P3W (Δ). In addition, it can measure reactive power and electric energy with ways of true reactive, cross-phase reactive power, artificial neutral point of reactive.

n Display RMS voltage, current of each input

n Display frequency & phase angle between voltage & current and defined reference

n Display power factor of each phase

n Display active power & reactive power of each phase

n Display total active, reactive & apparent power

n Display phase sequence

n Integration time can be set between 1 to 99

n Harmonic: analyze the harmonics of voltage and current up to 51st times

n Display of vector diagram.

n Waveform display, harmonic analysis, distortion calculation. Display of frequency spectrum, it can display the amplitude, contents and phase of the harmonic. Frequency spectrum can be enlarged 

n Measurement of space magnetic induction intensity.

n Measurements of voltage drop of the device’s dotted terminal.

n Measurement of the constant and frequency of the meter to be adjusted.

n Measurement of power of fundamental wave.

n It can adjust errors of three different kinds of meters (active power, reactive power, apparent power, voltage, and current).

n It can check the comprehensive error of device composed of three single-phase meters.

n It can be used as three single-phase standard meters.

n With storage function, it can store 30 groups of data records which can be searched and browsed according to the condition

Specification:

l Signal range

      Voltage:          1 - 560V (phase voltage)

      Current:          1mA - 120A (240A)

      Frequency:       40 - 70Hz

      Input pulse:      max. 2MHz (TTL)

      Output constant: with automatic constants, the frequency of the output pulse is 60 KHz when at rated range.

l Accuracy

n Voltage measurement (RMS):

      Accuracy: 0.02% Rd (class0.02)   0.05% Rd (class0.05)

      Measurement drift: 50ppm.

      Measuring range: there are five ranges of 30V, 60V, 120V, 240V and 480V; it can be changed by automatic or manual.

n Current measurement: accuracy:

Measuring range: 12 ranges are 12.5mA, 25mA, 50mA, 100mA, 250mA, 500mA, 1A, 5A, 10A, 20A, 50A, and 100A; it can be shifted automatically.

n The measuring accuracy of the active/reactive power and the active/reactive electric energy: (Referred to the value read off with optimum range selection)

n The measuring accuracy of the appearance power and the appearance electric energy:

      Class 0.02:  0.02% (50mA … 120A)   0.04% (2mA … 50mA)

      Class 0.05:  0.05% (50m … 120A)    0.10% (2mA … 50mA)

      (Referred to apparent power irrespective of measurement type)

      Appearance power/energy measurement drift:

      Class 0.02:  100ppm (50mA … 120A)  200ppm (2mA … 50mA)

      Class 0.05:  200ppm (50mA … 120A)  400ppm (2mA … 50mA)

n Frequency measurement:

     Measuring range:  40 - 70Hz;

     Resolution:        0.0001Hz;

     Accuracy:         ±0.01Hz.

n Phase measurement:

     Measuring range: 0 - 359.999° (0 - ±180°);

     Resolution: 0.001°;

     Accuracy: ±0.01°.

n Measurement of the harmonic voltage:

      2 - 10 orders: where harmonic content ≤30%, error is 0.1%;

     11 - 21 orders: where harmonic content ≤30%, error is 0.2%;

     22 - 51 orders: where harmonic content ≤30%, error is 0.5%.

n Measurement of the harmonic current:

     2 - 51 orders: where harmonic content ≤50%, error is 0.1%.

l  Input impedance

       Voltage input impedance:  ≧750KΩ

       Current input impedance: 0.001Ω.

l Work environment

      Normal temperature type:  15 – 30degree;

      Temperature coefficient:    U<5ppm/K, I<5ppm/K, P<7.5ppm/K;

      Warm-up-time:             30 minutes.

      Wide temperature type:    100C - 43oC;

      Temperature for testing:    23±1 oC

      Humidity:                  45 - 80%R.H

      Power supply:          240V/120V  ±15%  50Hz/60Hz ±1%

Power consumption:       ≤50VA.

l Volume: 355 × 185 × 145 mm.

Weight: 7.5 kilograms.