-
-
EMC Service
-
-
-
Contact Tianhai
Voltage drop test
Voltage drop test
The voltage sag test tests the effects of sudden voltage dips or other power interruptions on the device. This replicates the effects of a power loss, as well as the normal fluctuations in the AC power network that the device may experience. In the voltage sag test, the tapped autotransformer and the immunity test system will perform a series of simulations, with drops and leaks of different lengths and severity.
Reference standard: IEC61000-4-11
You can refer to the instructions in the IEC61400-21-2008.
It means that the power supply voltage suddenly drops from the rated value to a certain potential point, which will cause a sudden change in the line current of the electrical equipment, forming a potential impact and causing damage. An intermediate transformer or converter can be used to limit the impact of the impact energy.
Class 1: Suitable for protected power supplies whose compatibility level is lower than that of public power supply systems. It involves the use of equipment that is sensitive to power disturbances (e. g. laboratory instruments, certain automatic control and protection equipment, computers, etc.). (Equipment installed in Class 1 environment requires protective devices such as UPS, filters or surge suppressors.)
Category 2: Generally applicable to the common coupling point PCC in the commercial environment and the internal coupling point IPC in the industrial environment. The compatibility level of this class is the same as that of the utility power supply system. The elements relating to utility systems are therefore also suitable for use in such industrial environments.
Category 3: Only applicable to IPC in industrial environments. The compatibility level of some harassment phenomena in this category is higher than that of category 2. When the following equipment is connected, it should be considered as such an environment: a. most of the load is powered by the converter; B. welding equipment; C. large motors that start frequently; D. rapidly changing loads.
Voltage drop test according to standard
According to the standard
IEC 61000-4-11/GB T17626.11: Voltage dips, short interruptions and voltage variations immunity tests
IEC 61000-4-29/GB T17626.29: Voltage dips, short interruptions and voltage variations at the input port of the DC power supply
The test level of the voltage sag is expressed in% UT (the remaining voltage after the sag is the percentage of the reference voltage): 0%,40%,70%,80%.
Short-term interruption, generally refers to the power supply completely interrupted for 250 cycles (50Hz) or 300 cycles (60Hz).
Voltage change, generally refers to the mutation to 70% after maintaining 1 cycle, and then after 25/30 cycles to restore to the reference voltage.
Tianhai Testing Laboratory
Tianhai testing is set up and operated in accordance with the laboratory accreditation system specification ISO 17025. The testing instruments are made up of Germany's Rohde & Schwarz, Switzerland's EMTEST, YYOKOGAWA, Agilent, Tektronix and other world's top instrument manufacturers. The equipment is advanced and sophisticated, the site environment control is reliable, traceability is strong, the technical team is senior and efficient, and close cooperation with international authoritative organizations is maintained.
Contact Us
传导骚扰测试
Conduction immunity test
Electric fast pulse
Voltage drop test
传导骚扰测试
Conduction immunity test
Electric fast pulse
Voltage drop test
ENTERPRISE ADVANTAGE
Inspection Guarantee
Inspection and Testing Agency Qualification Certificate (CMA), American Laboratory Accreditation Association (A2LA); Government-approved third-party testing service agencies, in strict accordance with national standards for testing, issued a report with legal effect.
Quickly get the certificate.
55 engineers with more than 10 years of experience in EMC design and rectification, quickly out of the design; The introduction of German RS,SCHWARZBECK and Swiss TESEQ imported precision instrument testing, 24-hour operation, short test cycle, half an hour out of the program, 3 days to get the report.
Testing Laboratory
Has EMC electromagnetic compatibility, safety laboratory, 966 anechoic chamber, automotive electronics laboratory, medical electronics testing laboratory, 5G RF CCC laboratory, RF laboratory, private anechoic chamber laboratory, providing a wide range of testing; The laboratory has won CMA, A2LA and other qualifications;
Enterprise strength
15 years of industry experience, deep-rooted in the field of electromagnetic compatibility, efficient solution to product electromagnetic compatibility and other issues; National high-tech enterprise, with CMA and A2LA certificates, has been recognized by UL, TUV, Intertek, TIMCO, FCC, EMCC, NEMKO, SGS, etc. in the United States, serving the world.
