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M32 107E4 GS_3 Go to cover page
Safety test requirements
3. Equipments and Connection
3.1. Equipments For example : - ChenHwa 9032 PROGRAMMABLE AUTO SAFETY TESTER - ChenHwa 510B Digital Grounding Continuity Tester - ChenHwa 901 (AC Hi-pot test), 902 (AC, DC Hi-pot test) Withstanding Tester 3.2. Connection * Turn on the power switch of monitor before Hipot and Ground Continuity testing.
All units that are returned for service or repair must pass the original manufactures safety tests. Safety testing requires both Hipot and Ground Continuity testing.
HI-POT TEST INSTRUCTION
1. Application requirements
1.1 All mains operated products must pass the Hi-Pot test as described in this instruction. 1.2 This test must be performed again after the covers have been refitted following the repair, inspection or modification of the product.
2. Test method
2.1 Connecting conditions 2.1.1 The test specified must be applied between the parallelblade plug of the mainscord and all accessible metal 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:
Condition HiPot Test for products where the mains input range is Full range(or 220V AC) HiPot Test for products where the mains input is 110V AC(USA type) Ground Continuity Test requirement
(ChenHwa 9032 tester)
Connect the "video cable"
1700VDC (1200VAC) 1 second
Test time 3 seconds (min.) Trip current (Tester) set at 100 uA for Max. limitation; set at 0.1 uA for Min. limitation set at 2 seconds
Test current: 25A,AC Test time: 3 seconds(min.) Resistance required: <=0.09+R ohm, R is the resistance of the mains cord.
or "grounding screw" to the CLIP on your tester.
Connect the power cord to 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 Inspector must be 1 minute.No breakdown during the test. 2.2.3 The test voltage must be maintained within the specified voltage + 5%. 2.2.4 The grounding blade or pin of mains plug must be conducted with accessible metal parts.
Power outlet (Rear view of monitor)
Hipot and Ground Continuity testing records have to be kept for a period of 10 years.