Functional 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 120 A, meet the requirements of 1.2 In current test for a full 100 A energy meter.
◉ DC small signal voltage output: up to ± 4.4 V, can be used as the current input for indirectly connected DC 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.
◉ DC+AC output mode: Each DC output can superimpose AC components with adjustable frequency, phase, and amplitude for ripple effect testing.
Auxiliary power supply: It can provide DC ± 24 V/48 V or AC 220 V power supply for Class A energy meters (independent power supply type).
The voltage variation time of the power supply can be set arbitrarily within 20 ms to 1 min to complete voltage sag and short-term interruption tests.
◉ Power consumption measurement: Each power supply module of the meter has a loop current measurement function to detect the power consumption of the tested meter.
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.

Voltage sag and short interruption test for AC power supply/Voltage sag and short interruption test for DC power supply

DC voltage output DCV

DC current output DCI

DC small signal voltage output DCIu

DC energy index

DC energy measurement uncertainty: DC voltage measurement uncertainty+DC current measurement uncertainty (or small signal voltage measurement uncertainty)
Standard power pulse output: High frequency full-scale value corresponds to 60 kHz, low frequency full-scale value corresponds to 6 Hz, frequency jitter<10 μ s
Standard power pulse transmission: Received pulse frequency: ≤ 150 kHz, input voltage level: ≤ 5 V
Automatic display power error with a resolution of 0.0001%

Auxiliary power supply/clock daily timing error

Each meter has three power supply modes: AC 220 V (isolated from electricity), DC ± 24 V, DC ± 48 V, other types can be customized
AC 220V load capacity: 30 mA/meter position, with replaceable fuse protection, power consumption measurement uncertainty better than: 0.2 VA
DC ± 24 V load capacity: 300 mA/meter position, with short circuit and overload protection, power consumption measurement uncertainty better than: 0.1 VA
Each meter has its own power consumption measurement function
Device standard clock accuracy: ± 2×10^-7There are two error display formulas for timing error: s/d and ppm/ppb

Selection Guide