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Hi All,
clause 8.4.2 c) states that following parts are excluded from the touch current mearsurement
– accessible contacts of connectors;
– contacts of fuseholders that are accessible during replacement of the fuse;
– contacts of lampholders that are accessible after removal of the lamp;
– parts inside an ACCESS COVER that can be opened without the use of a TOOL, or where a TOOL is needed but the instructions for use instruct any OPERATOR other than SERVICE PERSONNEL to open the relevant ACCESS COVER.
provided that if the probability of a connection to a PATIENT, either directly or through the body of the OPERATOR, through which a current exceeding the allowable TOUCH CURRENT could flow, is negligible in NORMAL USE, and the instructions for use instruct the OPERATOR not to touch the relevant
part and the PATIENT simultaneously.
continuously, the standards regulated the voltage limits( 42.4v peak or 60v dc) and energy limits ( 240va, 60s/2J, at potential up to 2J) for such parts.
and has a note : If voltages higher than the limits specified in 8.4.2 c) are present, the LEAKAGE CURRENT limits referred to in 8.4.2 b) apply.
questions is, such as an illuminating lamp derives its power from the manis directly (ac 240v), conductive parts of the lampholder can be operator accessible and the voltage exceeds 42.4v peak, does the conductive parts of the lampholder subject the test of touch current?
obviously it's failed...
clause 8.4.2 c) states that following parts are excluded from the touch current mearsurement
– accessible contacts of connectors;
– contacts of fuseholders that are accessible during replacement of the fuse;
– contacts of lampholders that are accessible after removal of the lamp;
– parts inside an ACCESS COVER that can be opened without the use of a TOOL, or where a TOOL is needed but the instructions for use instruct any OPERATOR other than SERVICE PERSONNEL to open the relevant ACCESS COVER.
provided that if the probability of a connection to a PATIENT, either directly or through the body of the OPERATOR, through which a current exceeding the allowable TOUCH CURRENT could flow, is negligible in NORMAL USE, and the instructions for use instruct the OPERATOR not to touch the relevant
part and the PATIENT simultaneously.
continuously, the standards regulated the voltage limits( 42.4v peak or 60v dc) and energy limits ( 240va, 60s/2J, at potential up to 2J) for such parts.
and has a note : If voltages higher than the limits specified in 8.4.2 c) are present, the LEAKAGE CURRENT limits referred to in 8.4.2 b) apply.
questions is, such as an illuminating lamp derives its power from the manis directly (ac 240v), conductive parts of the lampholder can be operator accessible and the voltage exceeds 42.4v peak, does the conductive parts of the lampholder subject the test of touch current?
obviously it's failed...