Safety Test Requirments; Safety Test Requirements - Philips 240PW9EB/00 Service Manual

90
240PW9 LCD
86
220BW8 plus LCD
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 parallel-
blade 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 Hi-Pot Test for
products where
the mains input
is 220V AC
Test 2820VDC
voltage (2000VAC)
Test time 3 seconds
Trip current Set at 100uA for
Max limit;
(Tester)
Set at 0.1uA for
Min limit.
Ramp time Set at 2 seconds
(Tester)
2.2.1 The minimum test duration for Quality Control Inspector
must be 1 minute.
2.2.2 The test voltage must be maintained within the specified
voltage + 5%.
2.2.3 There must be no breakdown during the test.
2.2.4 The grounding blade or pin of mains plug must be
conducted with accessible metal parts.

Safety Test Requirements

Hi-Pot Test for Ground Continuity
products where
Test requirement
the mains input
is 110V AC
1700VDC Test current:
(1200VAC) 25A, AC
1 seconds
Test time:
3 seconds
5mA
Resistance required:
<=0.09+Rohm,
R is the resistance
of the mains cord.
3. Equipments and Connection
3.1. Equipments
For example :
- Zentech 9032 PROGRAMMABLE
TESTER
3.2. Connection
* Turn on the power s witch of monitor before H ipot and
G round C ontinuity tes ting.
(Z entech 9 032 tes ter)
C onnect the clip to the monitor.
C onnect the power cord
to the monitor.
4. Recording
Hipot and Ground Continuity testing records have to be kept
for a period of 10 years.
AUT O SAFETY
C lip
P ower outlet
(R ear view of monitor)