USER GUIDE |
EAGLE TWO+
Version: 3.3
81
Checking Low Frequency Leakage Current and Ground Resistance
Check the frequency leakage current and ground resistance before returning the EAGLE TWO
+generator to clinical use.
Equipment
DVM
Leakage current tester
Output Socket and PREM Source Current
1. Set the DVM to AC volts (200 mV) and connect the leakage current test circuit.
2. Turn on the generator.
3. Measure between all the output sockets (including the PREM Patient Return Electrode socket)
and earth ground. Record the largest reading.
4. Determine the leakage current using the conventional 1 microamp per 1 millivolt.
5. Verify under normal conditions (ground closed, normal polarity) the leakage current is less
than 10 microamps. If the leakage current is greater than 10 microamps, call the Whittemore
Enterprises Inc. Service Centre.
6. Verify single fault conditions (ground open) the leakage current is less than or equal to 50
microamps. If the leakage current is greater than 50 microamps, call the
Whittemore Enterprises
Inc.
Service center.
Chassis or Earth Leakage
1. Set the DVM to AC volts (200 mV) and connect the leakage current test circuit.
2. Turn on the generator.
3. Measure between the chassis and earth ground.
4. Determine the leakage current using the conventional 1 microamp per 1 millivolt.
5. Verify under normal conditions (ground closed, normal polarity) the leakage current is less
than 100 microamps. If the leakage current is greater than 100 microamps, call the
Whittemore
Enterprises
Inc.
Service center.
6. Verify single fault conditions (ground Open) the leakage current is less than or equal to300
microamps. If the leakage current is greater than 300 microamps, call the
Whittemore Enterprises
Inc.
Service Centre.
Output Socket and PREM Sink Current
1. Set the DVM to AC volts (200 mV) and connect the leakage current test circuit.
2. Turn on the generator (110 or 220 Vac) and connect the end of the leakage current test circuit
to mains voltage through a 120k
resistor.
3. Connect the other side of the IEC leakage load to all the output sockets (including the PREM
Patient Return Electrode socket).
4. Determine the leakage current using the conventional 1 microamp per 1 mill volt.
5. Verify the leakage current is less than or equal to 20 microamps. If the leakage current is
greater than 20 microamps, call the
Whittemore Enterprises
Inc.
Service Center.
Checking High Frequency Leakage Current and Ground Resistance
Check the high frequency leakage current and ground resistance before returning the EAGLE
TWO+generator to clinical use. Check the leakage current at these times.
After calibrating the generator.
Every six months.
Equipment
200 Ω, 250 watt, noninductive resistor
Current transformer
Содержание EAGLE TWO PLUS
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