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  • Model HLY-400  (100A/200A/300A/400A)
Model HLY-400  (100A/200A/300A/400A)

Model HLY-400 (100A/200A/300A/400A)

Brief description


The equipment is suitable for measuring contact resistiance and loop resistance of switching control device. It can directly measure the loop resistance under current of 100A/200A/300A/400A with digital display and print the test result. The instrument has the characters of measurement accuracy, performance and stability. It can meet the requirements of power sector field and high-voltage switch factory to test loop resistance. There are 100A /200A/300A/400A four scales for adjusting.



1) Measurement range:    100A  0 ~ 40mΩ  last 120S

                     200A  0 ~ 20mΩ  last 120S

                         300A  0 ~ 13mΩ  last 60S

                         400A  0 ~ 10mΩ  last 30S

2) Measurement precision: better than 0.5%±0.2uΩ

3) Resolution: 0.01μΩ

4) Operating mode: continuous measurement

5) Display mode: LCD

6) Computer interface: RS232

7) Print way: thermal printing   

8) Environment condition:

           Temperature: -10℃ ~ 50℃

           Relative humidity: < 90%25℃


           Power supply frequency: 50HZ±1HZ

9) Power: ≤2100W

10) Size: length 460 mm*width 400mm*height 380mm

11) Weight: 22 Kg



Sr no





Power supply cable

1 unit


Test cables

1 set


Soft driver

1 unit


Printer paper

1 unit


Factorys calibration report

1 unit


Operating manual

1 unit


Pack/Aluminium alloy box for


1 unit


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