Automatic Safety Test System

The LS9955/LS9956 Automatic Safety Test System (electrical safety analyzer) combines the following functions: Withstand Voltage Test (AC / DC), Insulation Resistance Test (IR), Leakage Current Test (LLC), Grounding Resistance Test (GR) and Power Test (LS9956 includes Power Test, LS9955 does not include Power Test). The equipment is mainly used for lighting fixtures, household appliances and motor tools safety test on the production line or in the R&D laboratory.

Standard:
IEC/EN 60335-1:2023/GB 4706.1-2024 “Household and similar electrical appliances – Safety – Part 1: General requirements”
UL 60335:2022 “Standard for Safety of Household and Similar Appliances, Part 1: General Requirements”
IEC 60598:2024/GB 7000-2023 “Luminaires – Part 1: General requirements and tests”
IEC 60950:2020 “Information technology equipment Safety –Part 1: General requirements “
IEC 62368-1:2023/GB 4943-2022 “Audio/video, information and communication technology equipment – Part 1: Safety requirements”
IEC 60601-1 3.1:2012/ GB 9706.1-2020 “Medical Electrical Equipment – Part 1: General Requirements For Basic Safety And Essential Performance”

Specification:
• Remote control device and can control by software (Optional)
• Display all setting parameters and testing results in the same big LCD screen
• PASS/FAIL limit values can be set. If the object fails the test, there will be a light/sound alarm
• Test mode is programmable;  50 groups settings are available, 8 test steps per group
• Quick discharge. Support 50Hz and 60Hz frequency; Electric safety wall detecting feature
• The LS9955 can test Withstand Voltage (AC/DC), Insulation Resistance (IR), Leakage Current (LLC) and Ground Resistance (GR)
• The LS9956 can test Withstand Voltage (AC/DC), Insulation Resistance (IR), Leakage Current (LLC), Ground Resistance (GR) and Power

What’s the test method of Automatic Electrical Safety System?
Pls. note that the DC high voltage output is a negative voltage, and the ground is a positive. When testing capacitance, there is a charging process when voltage is applied to both ends of the capacitor. At this time, there is a charging current in the test circuit. When the current is greater than the set leakage current value, the withstand voltage tester will alarm to interrupt the test , it cannot be proceed. Therefore, when the safety tester is testing, the voltage should be increased slowly, and the charging current should be less than the set leakage current value until the test voltage is specified, and the test should be performed. It is not possible to use a fixed voltage, reset-start method for testing. In the AC circuit, it is equivalent to the resistance in the DC circuit. […more…]

LISUN LS9956 Automatic Safety Test System – After-sales Frequently Asked Questions (FAQ).
LISUN LS9956 Automatic Safety Test System were in the market for more than 10 years, LISUN engineers service team already summary the most of the After Sales Questions and Answers in the above link. Please read it carefuly, you can solve the most of the problems by yourself if you have some questions while using the instruments. LISUN will be continue to update this pages and more FAQ can be found in this topic link. 

Lee Yanan

2020-02-12

The product is very good, the service is very professional👍

Automatic Safety Test System - Introduction Video

Automatic Safety Test System - Operation Video