22 104S CM23 GSIIISafety test requirements
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All units that are returned for service or repair must pass the3. Equipments and Connection
original manufactures safety tests. Safety testing requires both
Hipot and Ground Continuity testing.3.1. Equipments
For example :
HI-POT TEST INSTRUCTION- ChenHwa 9032 PROGRAMMABLE AUTO SAFETY
TESTER
- ChenHwa 510B Digital Grounding Continuity Tester
1. Application requirements- ChenHwa 901 (AC Hi-pot test), 902 (AC, DC Hi-pot test)
Withstanding Tester
1.1 All mains operated products must pass the Hi-Pot test as
described in this instruction.
3.2. Connection
* Turn on the power switch of monitor before Hipot and
1.2 This test must be performed again after the covers haveGround Continuity testing.
been refitted following the repair, inspection or modification
of the product.
Clip
2.Test method
2.1 Connecting conditions
2.1.1 The test specified must be applied between the parallel-
blade plug of the mainscord and all accessible metalClip
parts of the product.
2.1.2 Before carrying out the test, reliable conductive
connections must be ensured and thereafter be
maintained throughout the test period.
2.1.3 The mains switch(es) must be in the "ON" position.
2.2 Test Requirements
All products should be HiPot and Ground Continuity tested as
follows:
(ChenHwa9032tester)
Condition HiPot Test forHiPot Test forGround Continuity
Video cable
products whereproducts whereTest requirement
the mains inputthe mains input is
range is Full110V AC(USA
range(or 220Vtype)
AC)
Connect the "video cable"
or "grounding screw"
Test2820VDC1700VDCTest current:to the CLIP on your tester.
voltage(2000VAC)(1200VAC)25A,AC
Test time:
Test time 3 seconds1 second3 seconds(min.)
(min.)Resistance
required:
Grounding screw
Tripset at 100 uA5 mA<=0.09+R ohm,
currentfor Max.R is the
(Tester)limitation; setresistance of
at 0.1 uA forthe mains cord.
Min. limitation
Rampset at 2Connect the power cord
timesecondsto the monitor.
2.2.1 The test with AC voltage is only for production purpose,
Service center shall use DC voltage.
2.2.2 The minimum test duration for Quality Control InspectorPower outlet
must be 1 minute. No breakdown during the test.
4. Recording
(Rearviewofmonitor)
2.2.3 The test voltage must be maintained within the specified
Hipot and Ground Continuity testing records have to be kept for
voltage + 5%.
a period of 10 years.
2.2.4 The grounding blade or pin of mains plug must be
conducted with accessible metal parts.
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