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  • NR5240-.jpg

NR5240 Series Wireless Secondary Voltage Drop Load Tester

Wireless secondary voltage drop load tester, also known as online secondary voltage drop load tester and current transformer secondary voltage drop online tester; consists of two handheld measurement terminals, which can synchronously measure six-channel voltage amplitude and phase wirelessly, and can also be used as two three-phase voltage-current-phase meters separately.


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Product patent

Product description

Product Introduction
  The Wireless Secondary Voltage Drop Load Tester, also known as the Secondary Voltage Drop Load Online Tester or the Current Transformer Secondary Voltage Drop Load Online Tester, consists of two handheld measurement terminals. It can synchronously measure six voltage amplitudes and phases wirelessly, or it can be used independently as two three-phase voltage-current-phase meters.
 
Main Features
  ◆ Distributed wireless synchronous measurement of voltage, current, phase and other electrical parameters; wireless synchronous measurement of six voltage amplitudes and phases; single-phase or three-phase measurement of secondary voltage drop; automatic calculation of ratio difference and angle difference.
  ◆ Can be used independently as a secondary load online tester and a three-phase voltage-current-phase meter.
  ◆ No GPS required, avoiding prolonged star searching due to weather or tall buildings.
  ◆ No need to lay temporary cables between the electricity meter side and the PT end, avoiding PT secondary short circuits caused by cable insulation or operational problems.
  ◆ Using wireless communication avoids pollution of the secondary measurement circuit by carrier communication, affecting the accuracy of electricity metering.
  ◆ Optional wireless repeater to solve wireless communication problems in basements and well-shielded indoor environments.
  ◆ Current amplitude and phase measurement can reach a minimum of 1mA. Very suitable for load tests of main transformers in substations and current measurement in newly built stations or stations with small loads.
  ◆ Industrial-grade operating temperature range: -20 ~ 50℃.
 
 
Technical Parameters
Type
Measurement Range
Unit
Error
Resolution
Ratio Difference
0.001~99.9
%
DX=±(X×1% +Y×1 %±0.02%)
0.001
Angle Difference
0.01~999.9
σ
DY = ±(X × 1% + Y × 1% ± 0.5)
0.01
PT Secondary Admittance
1.00 ~ 99.9
mS
±1%±0.02mS
0.01
CT Secondary Impedance
0.1 ~ 50
Ω
1% + 2 characters
0.01
Voltage
5 ~ 600V
V
0.5% x Reading + 5 characters
0.1V
Current
0.001 ~ 6A (expandable)
A
0.5% x Reading + 5 characters
0.0001A

 

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