XL-821 Single-phase Programmable Standard Power Source-Shenzhen Xinglong Technology Co., Ltd.

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XL-821 Single-phase Programmable Standard Power Source

The XL-821 single-phase programmable standard power source product is used in occasions requiring precise and certain power AC voltage and current, generally for AC calibration and inspection purposes. It is suitable for power departments, metrology departments, quality inspection departments, research institutions, universities, and production and R&D enterprises involved in electric energy meters, distribution terminals, electricity management, load control, power quality, reactive power compensation, and more.

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Product Description

Product Introduction

XL-821 Single-phase Programmable Standard Power Source Using high-performance DSP, FPGA, high-precision DA and high-fidelity power amplifier technology, it can output high-precision voltage and current with adjustable frequency, phase, and amplitude within the 40Hz to 65Hz power frequency range. Its output sine wave is pure (distortion ≤0.1%, typically 0.03%), with excellent stability (typically 0.004%RD), specially designed for power systems (electrical measurement, thermal engineering, remote control, etc.) and metering departments, used for high-precision calibration of voltage, current, power and other electrical parameter meters.

Main Functions

Main Functions	Function Description
AC Standard Source Output	Can output power frequency ( 40Hz ~ 65Hz ) frequency, phase and amplitude adjustable high-precision voltage and current, convenient for power workers to develop and verify
Transmitter Verification	Used for voltage, current, and power verification
Communication Function	Used for communication with PC and other main control modules, only supports "Programmable Power Source Interface Protocol"
Electric Energy Verification Function	Used to verify electric energy pulse input
User-defined Function	Users can customize function output (arbitrary harmonic fitting), but the function must not contain DC components
Secondary Development	Users can refer to the "Programmable Power Source Interface Protocol" to develop various functions through the communication port
Software Control Function	Equipped with XL-3900 series operation software, as long as the device power is turned on and the communication cable is connected, it can be freely controlled on the PC machine, convenient and fast
Local Function	Equipped with 320*240 LCD display, 24 buttons and rotary encoder, convenient for local operation
Alarm Function	When the device malfunctions, the system will automatically start the protection program, accompanied by sound or interface pop-up prompts. At this time, the user should power off to find and eliminate the fault, such as voltage to ground short circuit, current open circuit output

Technical Features

Waveform fitting technology far surpassing peers, with up to 50,000 data points per cycle, providing extremely high waveform resolution and very low waveform distortion;
Can output pure sine power signals with distortion of 0.03% (typical value);
Built-in 32-bit 400M digital signal synthesizer (DDS), the system has extremely high frequency resolution and stability, and has phase shifting and frequency conversion capabilities;
Excellent temperature stability, using internal devices with 1PPM temperature coefficient, can be used for years without recalibration;
Adopts hardware deep negative feedback technology, load regulation rate less than one ten-thousandth, adjustment time less than millisecond level;
Internal control accuracy index better than two ten-thousandths;
Complete overheat, overload, and short circuit protection functions 。

Technical Specifications

Accuracy (varies by model and grade)		Long-term Stability
Accuracy Grade	Class 0.05, Class 0.1	Voltage	±60PPM/year
Voltage Amplitude Accuracy	0.05%RG, 0.1%RG (RG is range)	Current	±60PPM/year
Current Amplitude Accuracy	0.05%RG, 0.1%RG (RG is range)	Frequency	0.1PPM/year
Frequency Error	0.001Hz, resolution 0.001Hz	Output Power
Electric Energy Error	0.05%, 0.1%	Voltage	25VA
Phase Accuracy	0.02 degrees	Current	25VA
Gear Settings		Output Stability
Voltage	140V, 280V, 420V	Voltage	0.01%
Current	0.2A, 1A, 5A, 10A (20A, 50A, 100A)	Current	0.01%

Device Selection

Item	XL-801	XL-821	XL-831	XL-801E
Accuracy Grade	0.05	0.05	0.05	0.05
Number of Phases	1	1	1	1
AC Range	0~420V	0~420V	0~420V	0~120V
AC Range	0~20A	0~60A	0~100A	0~6A
Output Stability	0.01%RG/1min
Load Regulation Rate	Less than ±0.01%RG
Full Load Adjustment Time	Less than 1mS
Frequency output range	40~65HZ (up to 400HZ customizable)
Frequency output resolution	0.002HZ
Frequency output accuracy	±0.002HZ
Frequency temperature drift	±0.5PPM/℃
Phase output range	0~360°
Phase output resolution	0.01°
Phase output accuracy	±0.03°
Voltage power	25VA	25VA	25VA	15VA
Current power	25VA	40VA	80VA	15VA
Electric energy pulse interface	Available	Available	Available	Not available
Human-machine interface	1024*700 LCD display, Touch operation (except XL-821)			10-inch touch operation
Communication interface	RS232 serial port
Harmonic output	49th order
Long-term Stability	±60PPM/Year

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