Atec Chroma-19032 - Manual (Page 4)

SAFETY TEST OF INFORMATION TECHNOLOGY PRODUCT (IEC 60950)
POWER SUPPLIES, ADAPTER AND CHARGER SAFETY TESTING
Product Application
In digital time, information technology is so close to our life. Desktop,
notebook, LCD monitor, UPS, printer and projector are the products that
human may use at any time. To ensure the safety, all products should
do electrical safety test. The 19032 offers all functions of safety tests
and Normal/Reverse as well as Single Fault switch function (LC Test) to
reduce the load of manufacturing personnel.
Besides, the output floating of Telecommunication Network in IEC 60950
to perform dynamic leakage current test is required. The equivalent
stray capacitance will also be generated on isolated transformer even
it is floating circuit. The stray capacitance results in leakage current,
electrical damage to users. The 19032 along with 6000-05 /07/08
leakage current scanner have P1/P2 measurement function which is
able to measure dynamic leakage current on output terminal. It is the
best solution for testing information technology products.
Main Test Item
• Open Short Check
• Ground Bond
• AC/DC Hipot Test
• Earth Leakage Current Test
• Output Leakage Current Test
Power supply of electronic products including SMPS, Adapter and charger need to perform electrical safety test. According to various power
design methods and test conditions, the 19032 offers programmable edit and solution to let you complete all tests at one time.
A lot of designs of power product, the insulation capability of input terminal (Primary) to output terminal (Secondary) is required to protect the
damage inside component. Thus, the output terminal of Floating needs to perform Hipot test. The 19032 provides isolation test point with high
voltage which allows you not to change the fixture or cable manually but perform P-S Hipot test directly after P-G Hipot test.
Moreover, if there is danger to touch output
terminal (Secondary), dynamic leakage current
test also needs to be performed. Test item
Power supply sources
Open
&
Short
(OSC)
Ground
Bonding
Withstanding
voltage
from primary
to
Ground
Withstanding
voltage
from primary
to
Secondary
Leakage
Current
Three-wire power supply
class 1 (Secdonary Floating)
V V V V V
Three-wire power supply
class 1
V V V - V
Two-wire power supply
class 2
V - - V V
LIGHTING INDUSTRY AND LED RELATED ELECTRICAL SAFETY TEST
LED on the lighting industry is widespread gradually in the daily life. Each LED and power product need to be tested for withstand voltage,
insulation, grounding resistance and leakage current for protection from personal electric shock hazard.
Test item Test Condition
Leakage Current Test IEC 60990,Measure network Figure4,Configuration Figure 6
Withstanding Voltage Test
Working voltage＜DC42V WV Test Voltage 500V
Working voltage≧DC42V WV Test Voltage (2U+1000)V
Ground Bonding Test
Current from AC source of 25A passed for 1min between earthing
terminal and each of the accessible metal parts(IEC 61347-1)
LED Driver / Power Supply
AC
Line
L
N
Ground
Bound
Leakage
Current Withstand
Voltage
PE
Electronic
Circuit
Transformer N
AC MAINS
SUPPLY
C
I
C
IEC 469/99
N
L
T
Optional Test
Transformer
for Isolation
(Earthing Conductor)
B A
Measuring Network
PE
N
L
e
P1
(Polarity)
Point of connection to AC MAINS SUPPLY
EUT
(Test Switch)
P2
(Polarity)
Telecommunication
Network Connection
Port (not connected)
S
Chroma19032 with 4HV/4GC Scanner