Wuhan Wei the Austrian three high Electrical Equipment Co., Ltd. - WAAS-500A DC circuit breaker safety second characteristic tester main features: 1) the main control part using high-performance industrial computer, Windows XP operating system, real-time display of the parameters of the graph and numerical . 2) keyboard, touchpad input (external USB mouse); 5.7-inch TFT color LCD display. Simple operation, beautiful interface, all parameters at a glance. 3) switching constant current control technology, new power devices, 1A to 500A set their own constant current output, high precision constant current load capacity, can be a long time stability. 4) applies to the rated current of 1A to 500A DC circuit breaker safety characteristics test can be used to 6A to 100A DC fuse safety second characteristic test. 5) measurement using full testing or pumping test, fast response, high precision, safety and reliability. 6) The instrument has overheating, overcurrent, overvoltage protection, electromagnetic compatibility, anti-interference ability. 7) test management software can automatically complete the DC circuit breaker safety characteristics of the test, and analyze the test data to map out the circuit breaker protection characteristic curve (An S curve), and generate the report output. 8) IPC comes with 4G memory space can be stored test records, and equipped with two USB ports, convenient test record extraction and print. 9) instrument with integrated design, easy to carry. Main features: overcurrent protection circuit breaker standards in accordance with the GB10963-1999 for household and similar provisions breaker trip characteristic test should be done. 1) Time - current characteristics test (1) starting from cold circuit breaker through to 1.13In (the conventional non-tripping current) current to the agreed time, the circuit breaker should not trip. 5s current stability rose 1.45In (Conventional tripping current) current, the circuit breaker should trip within the agreed time. Starting from cold, the circuit breaker at all levels through current 2.55In, off time should be greater than 1s, and less than or equal to the rated current 63A circuit breaker opening time shall be less than 60 seconds for the rated current The 63A breaker opening time should be less than 120. 2) instantaneous trip test (1) B-type circuit breaker: starting from cold, the circuit breaker at all levels through 3In the current off-time should be greater than 0.1s; then starting from cold, the circuit breaker at all levels through 5In the current opening time shall be less than 0.1. For C-type circuit breakers: starting from cold, the circuit breaker at all levels through 5In the current off-time should be greater than 0.1s; then starting from cold, the circuit breaker at all levels through 10In Current, off time should be less than 0.1s. And D-type circuit breaker: starting from cold, the circuit breaker at all levels through 10In current off time should be greater than 0.1s; then starting from cold, the circuit breaker at all levels through 50In Current, off time should be less than 0.1s. Specifications Operating voltage: AC220V, 5