Portable Three Phase Testing Source for Instrument Calibration

Features:1. Built-in digital multi-functional standard meter with Integrated structure of meter and power source, parameters read via software
2. adopts DDS, CPLD and 32 bit embedded system, featured with high stability of signal source output, small fineness, low distortion
3. RAM system large color LCD display, display 3 phase U,I, VA, VAR, ...vector diagram, waveform analysis chart.
4. use digital power amplifier with above 90% efficiency and 300KHz carrier frequency, low distortion, little heating, high efficiency
5. Perfect protection function: voltage short circuit alarm, open circuit and over load alarm
6. Built-in OCXO for 50KHz impulse output, to calibrate energy meter clock, test day error/hour segment error via software (optional)
7. With 485 communication interface, for various communications test for multifunctional meters (optional)
8. can work without PC to auto calibrate energy meter by built-in software, storage capacity up to 1,000 calibrated meters' data
9. USB interface, can upgrade, output data, connect mouse for direct operation
10.Instrument accuracy level: 0.05 or 0.1
11. PC connection terminal: RS232 interfaceThree phase source parameters
1) output voltage:
3*57.7V Y3*100V
3*220V Y3*380V
Regulation range: 0~120% continuously adjustable, fineness:better than 0.01%
2) Output current
Range: 25mA,0.1A,1A,5A,25A,100A
Mimimum output current: 1mA ( accuracy <5%)
3). Output power: voltage circuit 3x50VA voltage circuit 3x150VA
4).Stability of output voltage current power : ≤0.02%/120S
5).Output voltage current waveform distortion: ≤ 0.5%
6).Three phase degree of symmetry: better than 120o±0.3o
7).Frequency range: 45Hz~65Hz regulation fineness: 0.1Hz
8).Phase range: -180.0°~180.0°regulation fineness: 0.1°
9). Indicating instrument accuracy level: voltmeter,ammeter ±0.01%
Phase meter accuracy ±0.01°
Frequency meter accuracy: ±0.01Hz
1) Input voltage
scope: 40-480V
Input voltage range: 60,120,240,480
overload capacity: 600V
input load ≤0.5mA(480V)
2) Input current
Scope: 0.01 - 100A
Range: 100,50,25,10,5,2.5,1,0.5,0.25,0.1,0.05,0.025A
Overload capacity: 150A
3) Accuracy:
Level: 0.05 (0.1A~120A)
Power measuring accuracy:
Active power measuring accuracy: 0.05%/0.1%(PF≥0.5)
Reactive power measuring accuracy: 0.1%/0.2%(PF≥0.5)
4) electric energy measuring accuracy
Active power measuring accuracy: 0.05%/0.1%(PF≥0.5)
Reactive power measuring accuracy: 0.1%/0.2%(PF≥0.5)
Protection function: Voltage short circuit, current open circuit, over-load, display over-voltage protection
2~21th order harmonic test, voltage interruption and drop test, harmonic amplitude adjustable
power supply: 230V±10%~50Hz
Maximum power comsumption: 300VA
Working environment: temperature 20ºC±5ºC relative humidity≤85%