Operation Manual

GMC-I Messtechnik GmbH 27

Leakage Current from the Application Part (alternative patient leakage current, mains at applied part)

Mains Polarity Parameter

Polarity can be reversed for measurements during which the

mains are connected to the test socket.

Note



Can only be used for types BF and CF applied parts.

Ð Select the test: ↑↓ keys.

Ð Connect the device under test to the test socket and the ap-

plied parts to the patient ports. The test probe has to be con-

nected but without applying electrical contact (potential-free).

Ð Select type of test current: DIR / ALT key.

Ð Select mains polarity reversal: L/N / N/L key.

Ð Select applied parts A through K: → key.

Ð Start the test: Press the START⏐STOP key.

Ð Measured values are displayed.

Ð End the test: Press the START⏐STOP key.

Ð Read the measured value and compare it with the table of

permissible limit values.

Examples of Maximum Permissible Limit Values for Leakage

Current in mA

Test Standard AP

Direct Measurement

(mains at AP)

Alternative Measurement

(alternative patient leakage

current)

IEC 62353

(VDE 0751-1)

BF 5 mA 5 mA

CF 0.05 mA 0.05 mA

IEC 60601

BF 5 mA —

CF 0.05 mA —

IEC 60601 3rd ed.

Total Patient

Leakage Current

BF 5 mA —

CF 0.1 mA —