terminal block performance testing process

Terminal shape looks simple, but the terminal must also undergo rigorous

testing and product validation experiments cyclical production patterns .

This paper describes the content of the mechanical  HDMI CABLE properties of terminals

, electrical properties , methods and criteria .
A mechanical performance test
An object of the torque test (Tightening Torque Test) test is to test the

torque screw has sufficient mechanical strength to ensure that during the

phenomenon does not occur in the pressure line of the slide wire , if the

screw is not broken after the test , deformation of the screw head groove

did not affect the continued use of the RAC CABLE  phenomenon of corruption , it is

qualified .
2, the pressure line reliability test (Secureness TeST) pressure line

reliability test purpose was to test whether the terminal to clamp the

wire but not excessive damage wires. Terminal connected to the specified

type and nominal cross-sectional area of the wire , hang some weight to 10

revolutions per minute (10 ± 2r/min) the speed of rotation, continuous

15min. After the test , if the wire does not slide clamp terminals , there

is no break in the vicinity of the clamping member , the pressure line

terminal reliability is qualified. If there is a wire break or fall off

the terminal clamping mechanism , it is unacceptable.
3, the pull-out test (Pull Out Test) pull-out test is designed to test the

wire terminals can be firmly clamped between metal surfaces. Specifies the

type of the access terminal and rated sectional area of ​​the wire , the

choice of a certain force (lkgf), in an axial  Network Cabinet direction of the wire to

pull the wire , kept 1min. If the wire does not fall out of the terminal ,

it is qualified .
4 , the mechanical strength test (Mechanical Strength Test) The purpose of

the test is to test the mechanical strength of the terminal has sufficient

mechanical strength , especially if the test terminals of the housing has

a sufficient mechanical strength. During the test , the sample was placed

in a drum test device, 5 the rotation speed rpm , for 5 minutes after the

sample was taken off was observed , if the terminal is not damaged , the

housing cracks , damage, etc. , is qualified .
5 , the mechanical life test (Fatigue Test) Mechanical life purpose is to

test the elastic component test terminals , can withstand a certain number

of plug or other mechanical operations use, such as compression and

release the spring-loaded terminal buttons. If the elastic element to the

terminal after the test assembly , the mechanical and electrical

performance should meet the requirements , it is qualified .
Second, the terminal electrical performance test
A contact resistance test (CONtactResistance) contact resistance test is a

static test terminal contact performance , that the contact resistance

should be less than a certain value .
2, the power frequency voltage withstand test (Power-Frequency Withstand

Voltage Test) frequency voltage withstand test is to test whether the

order of the terminal housing provisions should be transient or short-time

power frequency overvoltage . During the trial , with no breakdown or

flashover phenomenon .
3 , impulse withstand voltage test (Impulse Withstand Voltage Test impulse

withstand voltage test is the test should be able to withstand the

specified terminal case transient overvoltage . Trial process should be no

disruptive discharge .
4, the voltage drop test (Voltage Drop Test) is a dynamic contact voltage

drop test performance test terminals. The voltage drop should not exceed a

certain value .
5, the temperature rise test (Temperature Rise Test) test is a test

terminal temperature rise during normal use, the temperature can not

exceed the specified value , usually UL standard terminals through the

current , the temperature rise should not exceed the ambient temperature

of 30 ℃.
6 , high and low electrical performance test (Electrical Performance Test)

test is a test without electrical performance during normal use, the

reliability of the electrical properties of screw-type terminals. The

terminal is subjected to 192 cycles, the voltage drop and the first 24 in

the last cycle is not greater than a certain value ....