Line Frequency Leakage - ConMed Sabre 2400 Operators & Service Manual

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4.5.6 Line Frequency Leakage

Equipment: (See UL 544 or ANSI/AAMI
HF-18)
Line Reversing Switch
Ground Switch
High Impedance Meter (Fluke 8000 A or equiva-
lent)
Frequency Compensation Network (1K resistor
in parallel with the series combination of a 10
ohm resistor and a 0.15 uf capacitor.)
Procedure:
1. With the frequency compensation network
connected across the voltage input terminals of
the meter, make the measurements indicated in
Leakage
Path
Bipolar-Neutral
Bipolar-Neutral
Bipolar-Neutral
Bipolar-Neutral
Return Electrode-Neutral
Return Electrode-Neutral
Return Electrode-Neutral
Return Electrode-Neutral
Chassis-Neutral
Chassis-Neutral
Table 4.4 Unkeyed Line Frequency Leakage Tests
4-6
Table 4.4. With the meter scale set for ac mil-
livolts, the meter reading is equivalent to micro-
amperes.
2. Since the Sabre 2400 monopolar active outputs
are disconnected by relays when the unit is not
activated, active-to-neutral leakage tests must be
performed with the unit activated in order to be
valid. To prevent RF current from affecting leak-
age readings, set all controls to zero.
3. With all power controls set to 0, measure the
leakage current as in step 1 from each of the three
active output terminals to neutral (See Table
4.5) while that output is activated in Cut by the
appropriate foot switch or hand control jumper.
Hand control cut activations are accomplished by
connecting a jumper between the lower black jack
and the red jack of the desired hand switchable
accessory jack.
Line
Polarity
Normal
Normal
Reversed
Reversed
Normal
Normal
Reversed
Reversed
Normal
Reversed
Case Test
Ground Limit
Closed 5uA
Open 5uA
Closed 5uA
Open 5uA
Closed 5uA
Open 5uA
Closed 5uA
Open 5uA
Open 40uA
Open 40uA