GE Voluson 730, Руководство по обслуживанию

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GE M
EDICAL
S
YSTEMS
- K
RETZTECHNIK
U
LTRASOUND
D
IRECTION
105844, R
EVISION
1 V
OLUSON
® 730 S
ERVICE
M
ANUAL
10-20 Section 10-7 - Electrical Safety Tests
10-7-8-1 Data Sheet for ECG Leakage Current
The test passes when all readings measure less than the value shown in the table below. Record all
data on the PM Inspection Certificate.
Table 10-16 Maximum Allowance Limit for ECG Leakage Current
AC Power
Source
Maximum
Allowance Limit
GROUND OPEN
GROUND
CLOSED
Patient Lead to Ground Leakage Current Test
and
Patient Lead to Lead Leakage Current Test
115V 10uA 10uA
220/240V 500uA 10uA
Table 10-17 Maximum Allowance Limit for ECG Leakage Current
AC Power
Source
Maximum
Allowance Limit
Patient Lead Isolation Current Test
115V 20uA
220/240V 5mA
Table 10-18 Typical Data Sheet for ECG Leakage Current
ECG
Power
Tester
Polarity
Switch
Tester
Ground
Switch
Tester Lead Selector
RL RA LA LL C
ON NORM CLOSED
ON REVERSE CLOSED
ON NORM OPEN
ON REVERSE OPEN
OFF NORM CLOSED
OFF REVERSE CLOSED
OFF NORM OPEN
OFF REVERSE OPEN