NRAS-500A DC Vircuit Breaker Tester

The NRAS-500A DC circuit breaker tester is specially designed for testing overhaul and maintenance in substations. Meet the overload and short circuit characteristics test of DC circuit breakers thereby improving the health level of the DC system of the substation and avoiding skipping trips and large-scale blackouts caused by DC distribution networks.

Product Features
(1) The main control part adopts high-performance industrial computer Windows XP operating system real-time display of various parameter curves and values.
(2) Keyboard and touchpad input (USB mouse can be connected); 5.7-inch TFT true color LCD screen display. The operation is simple the interface is beautiful and all the parameters are clear.
(3) Switching constant current control technology new power devices 1A～500A self-setting constant current output high constant current accuracy strong load capacity and stable work for a long time.
(4) It is suitable for the ampere-second characteristic test of DC circuit breakers with a rated current of 1A～500A and can be used for the ampere-second characteristic test of 6A～100A DC fuse.
(5) The measurement method adopts full-point test or sampling point test with fast response speed high test accuracy and safety and reliability.
(6) DC circuit breaker tester has protection functions of over-heating over-current and over-voltage good electromagnetic compatibility and strong anti-interference ability.
(7) The test management software can automatically complete the test of the ampere-second characteristic of the DC circuit breaker and analyze the test data to draw the circuit breaker protection characteristic curve (ampere-second curve) and generate report output.
(8) The industrial computer comes with 4G storage space which can store test records at will and is equipped with two USB ports to facilitate the extraction and printing of test records.
(9) The DC circuit breaker tester adopts an integrated design which is easy to carry.

Working voltage	AC220V、50Hz
Ambient temperature	-20℃～50℃
Working humidity	≤90%RH
Test current	1～500A
Ripple coefficient of test current	< 2%
Stability of output current	≤±1%
Time record range	1ms～1000s
Minimum time resolution	0.1ms
Operation mode	keyboard touchpad (USB mouse can be connected)
Dimensions	530mm×470mm×200mm
Instrument weight	25kg
Instrument shell	aluminum alloy instrument box