Mindray DP-9900 - Page 104

Electrical Safety Inspection
A-7
ELECTRICAL SAFETY INSPECTION
5- Earth Leakage Test
OVERVIEW
Run an Earth Leakage test on the device being tested before performing any other leakage
tests.
Leakagecurrentismeasuredthefollowingways:
♦EarthLeakageCurrent,leakagecurrentmeasuredthroughDUToutletEarth
♦EarthLeakageCurrentAP‐EARTH(ALLAppliedPartsconnectedtoEarth),leakagecurrent
measuredthroughDUT
outletEarth
There is no need to attach a test lead; the 601PRO automatically connects the measuring
deviceinternally.
TEST PROCEDURE
 Perform the Test
1) FromtheMAINMENU,orwiththe outletunpowered,plugtheDUTinto the601PROfront
paneloutlet,andturnonthedevice.
2) Attachthedevice'sappliedpartstothe601PROappliedpartterminalsifapplicable.
3) Press shortcut key 4.The Earth Leakage test appears on the display, and
 the test begins
immediately:

¾ SOFTKEY1togglestheDUToutletPolarityfromNormaltoOfftoReverse.
¾ SOFTKEY2togglestheDUToutletfromEarthtoNoEarth.
¾ SOFTKEY3togglestheDUToutletfromL2toNoL2.
¾ SOFTKEY4togglestheAPtoEarth
toNoAPtoEarth.
4) Presstheprintdatakeyatanytimetogenerateaprintout ofthelatestmeasurement.
 Failure
Check any broken of the AC/DC adapter and its cable. Replace a new one if any portion
defective.
Checkanybrokenoftheenclosure.Replaceanydefectivepart.
Inspectwiringforbadcrimps,poorconnections,ordamage.
Testthewalloutlet;verifyitisgroundedandisfreeofotherwiring
abnormalities.Notifythe