Features

◉ DC voltage output: up to 1150 V, required for a voltage test of 1.15 Un on a full 1 kV energy meter.
◉ DC current output: up to 600 A, can be used as an electric steam charger tester, directly connected to an electric energy meter, or indirectly connected to an electric energy meter with an external shunt for current output
◉ DC small signal voltage output/measurement: up to ± 4.4 V, can be used as the current input for indirectly connected electric energy meters (corresponding to shunt voltage).
When checking, using low thermoelectric potential terminals and wires for four wire Kelvin connection can minimize the impact of thermoelectric potential or contact potential on electrical energy measurement.
Data analysis function: electricity stability testing, trend change curve, statistical analysis (maximum/minimum value, average value, standard deviation, etc.).
Auxiliary power supply: It can provide DC ± 24 V or AC 220 V power supply for Class A energy meters (independent power supply type).
Clock verification function: It has the functions of second pulse output/measurement and absolute clock reception, used to calibrate the timing error of the tested meter or perform Beijing time synchronization.
◉ Mobile measurement and control platform: It can observe or control the output of measurement values through its LCD touch screen, and can be manually checked.
◉ Specialized verification software: Full automatic or full automatic calibration of the verified table, data recording, analysis, management, and certificate export.

Main applications

◉⽀ Hold three directly connected DC standard energy meters or indirectly connected (shunt connected) DC standard energy meters with a level of 0.02 or below for full automatic verification
◉⽀ Holding a fully automatic calibration tester for electric steam DC chargers with a level of 0.02 or below

DC voltage output DCV

DC current output DCI

DC small signal voltage output DCIu

DC energy index

Optimal measurement uncertainty of electrical energy: 0.01% * RD
High frequency power pulse output: 60 kHz corresponding to full-scale value
Low frequency power pulse output: Full scale value corresponds to 6 Hz
Frequency jitter<10 μ s
Standard power pulse transmission frequency: ≤ 150 kHz, transmission voltage level: ≤ 5 V
Automatic display power error with a resolution of 0.0001%

Clock calibrator

Pulse signal input: BNC socket, microwave signal, amplitude: 0-5Vpk
Measurement range: 0.5 Hz to 10 MHz, 12 bit display
Standard second signal output stability: 2.0 × 10-10/h
Best measurement uncertainty: 2.0 × 10^-8
Clock verification: GPS absolute clock receiving function, real-time clock display.