Single Phase Energy Meter Calibration Equipment For Electric Power
The XL-821A single-phase programmable standard power source is a
new generation of high-precision standard power source based on 1.2
G MAC DSP, large-scale FPGA, high-speed and high-precision DA and
high-fidelity power amplifier. Applicable to electric power system,
electric power, remote control, dispatching and other power
departments and enterprises that need measurement, inspection and
high-precision standard signal sources. It is also suitable for
other occasions where high-precision standard signal sources are
required for measurement and inspection.
XL-821A can output high-precision voltage and current with
adjustable frequency, phase and amplitude at power frequency
(40Hz~65Hz). It is a highly accurate adjustable voltage and current
standard source. The XL801 can output very pure sinusoidal voltage
current with a distortion of no more than 0.1%, typically 0.03%.
The XL-821A's voltage-to-current output has very high output
stability, typically 0.004% RD. Therefore, it is very suitable for
work situations requiring high-precision inspection and
calibration, such as the measurement department for the detection
of various voltage, current, power and other electrical parameter
2. Main features
1) It is possible to output a pure sinusoidal power signal with a
distortion of 0.03% (typical).
2) Each harmonic output can be superimposed on the fundamental
3) The frequency output can be adjusted from 40Hz to 65Hz, the
resolution is 0.002Hz, and the accuracy is 0.002Hz.
4) The phase 0~360 degrees can be adjusted arbitrarily, which can
easily simulate various power supply situations and even reverse
5) Strong load capacity, can carry capacitive, inductive, resistive
load or composite type load, and the load regulation rate is better
than 0.01% RG.
6) Excellent temperature stability, the core device is a military
grade product with a temperature coefficient as small as 1PPM,
which can guarantee the output precision in the outdoor temperature
7) It is powerful and flexible with 32-bit MCU+DSP processor.
8) The waveform of the power frequency is up to 50,000 points per
week. The internal signal output is smoothed without filters, which
ensures the accurate output of the waveform, so that the system can
output accurate harmonics and the system has excellent harmonic
9) It can be easily connected to the PC through an RS232 to expand
10) Perfect overcurrent, overvoltage, overheat, short circuit, open
circuit, overload protection.
11) Hardware PID, the response is extremely fast, and the change of
load will not cause the fluctuation of the output.
12) 320*240 liquid crystal display, Chinese interface, easy to
13) Open communication protocol to facilitate secondary development
(factory automatic verification of RTU/FTU/power management
terminal/common measurement terminal).
14) It can be loaded with pure capacitive load, and the power meter
can be checked with PC software.
3. Main functions
Main 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, verify
Transmitter verification for voltage, current, power verification
Communication function Used to communicate with PC and other main
control modules, only supports "Programmable Power Interface
Power check function for verifying energy pulse input
User-defined functions User-definable function output, but requires
functions that do not contain DC components
Secondary development Users can refer to the "Programming Power
Interface Protocol" to develop various functions required through
the communication port.
Software control function Equipped with XL-3900 series operating
software, as long as the device power is turned on and the
communication line is connected, it can be controlled freely on the
PC, which is convenient and quick.
Local function with 320*240 LCD display, 24 buttons and rotary
encoder for local operation
Alarm function When the device is abnormal, the system will
automatically start the protection program, accompanied by a sound
or interface pop-up prompt. At this time, the user should power off
and find the cause of the fault and eliminate it, such as voltage
to ground short circuit, current open circuit output.
4. Main Technical Indicators
4.1 AC voltage output
|Name:||Energy Meter Calibration Equipment||Output Range:||0V～420V|
|Adjustment Fineness:||0.01% RG||Accuracy:||Better Than ±0.05% RG|
|Stability:||Better Than 0.02% RG /1min||Harmonic Number:||21 Times|
|Long-term Stability:||60PPM/year||Gear Setting:||0V～140V, 140V～280V, 280V～420V|
4. 2. AC current output
Adjustment fineness 0.01% RG
Accuracy is better than ±0.05% RG
Stability is better than ±0.01% RG/1min
Distortion better than 0.1% (non-capacitive load)
Output power rated at 25VA per phase
Full load regulation is less than ±0.01% RG
Full load adjustment time is less than 1mS
Output range 0A～60A
Gear setting 0A～0.2A, 0.2A～1A, 1A～6A, 6A～10A, 10A～50A
Temperature drift ±8PPM/°C
Long-term stability 60PPM/year