ESG-400
2-8 Checking the high frequency leakage current (according to IEC 60601-2-2)
The monopolar high frequency leakage current has to be measured according to the procedure 19.3.101 a) 2)
(neutral electrode isolated from earth at high frequency) as described in IEC 60601-2-2.
The bipolar high frequency leakage current has to be measured according to the procedure 19.3.101 a) 3)
(bipolar application) as described in IEC 60601-2-2.
The high frequency current is measured from the appropriate output connector of each pole while the
electrosurgical unit is operated at maximum output power setting in an appropriate mode and the output being
unloaded and loaded at rated load. The high frequency current is measured with the electrosurgical analyzer
through an internal resistance of 200 Ω.
2-8-1 Measurement of the monopolar high frequency leakage current under loaded condition
CAUTION
A connection of a 4 mm plug to any
other receptacle except
the right-hand-side receptacle of
the MONOPOLAR 1 socket and
the MONOPOLAR 2 socket may destroy
the socket during activation.
Fig. 5.2.4 and Fig. 5.2.5 are showing an example how to set up the test to measure the monopolar high
frequency leakage current under loaded condition. The load resistor R
L
= 500 Ω (J005) is connected via the
connection cable (J007, banana) with the active pole MONOPOLAR 1 and via the connection cable J011 with
the NEUTRAL connector. The high frequency leakage current is floating from appropriate pole to the
equipotential bonding port. It is measured via the electrosurgical analyzer via a measuring resistance of 200 Ω.
Fig. 5.2.4 shows the measurement from the neutral pole; Fig. 5.2.5 shows the measurement from the active
pole.
1) Assign the footswitch to the MONOPOLAR 1 socket and select the monopolar PureCut mode with effect 3.
Set the power level to 300. (Perform the setting according to the instruction for use.)
2) Set up the measurement according to Fig. 5.2.4 (Measuring of the high frequency leakage current under
loaded condition at the neutral pole.)
3) Activate the output power by pressing the corresponding footswitch pedal.
4) Verify the leakage current is ≤ 150 mA.
5) Set up the measurement according to Fig. 5.2.5 (Measuring of the high frequency leakage current under
loaded condition at the active pole.)
6) Activate the output power by pressing the corresponding footswitch pedal.
7) Verify the leakage current is ≤ 150 mA.
8) Repeat step 2 - 7 for the monopolar SprayCoag mode with effect 3 and power level 120.
9) Record the test results in the Inspection Card (see chapter 5-3).
7.022.211 / ISSUE 5 86 / 110 Chapter 5: Inspection
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