DATREND Systems ES601 Plus - 3.3 AutoSequence and Interface Input

ES601Plus OPERATING MANUAL
2.1.6 Touch Current
Depending on the safety standard, "touch current" may alternatively be referred to as "enclosure risk
current" or "enclosure leakage".
In this test, ES601Plus measures the current that flows from a metal part on the DUT enclosure that should
be grounded, to the actual protective earth from the AC electrical supply. The current is obtained by
measuring the voltage developed across a resistor/capacitor network simulating the AC impedance of the
human body, as defined by the safety standard. ES601Plus measures the current in microamps, while
simulating a variety of test conditions at the equipment line cord and isolated data interfaces (for example, a
transformer-isolated ethernet port on the device under test or "DUT").
For each test condition, the current flowing out of the enclosure of the DUT to protective earth is measured
and compared to a maximum limit specified in the safety standard. When measuring the touch current,
ES601Plus can be configured to record AC and DC values for these test conditions:
Normal Polarity Normal Condition
Single-Fault Condition, Line 2 Open
Single-Fault Condition, Earth Open
(NP:NC)
(NP:SF L2O)
(NP:SF EO)
Reverse Polarity Normal Condition
Single-Fault Condition, Line 2 Open
Single-Fault Condition, Earth Open
(RP:NC)
(RP:SF L2O)
(RP:SF EO)
2.1.7 Earth Leakage Current
In this test, ES601Plus measures the current that flows in the ground wire of the DUT when the ground
connection to protective earth is broken and the human body load is placed across the open circuit. Similar
to enclosure leakage current, earth leakage current is measured in microamps, while simulating a variety of
test conditions at the DUT line cord. When testing earth leakage, ES601Plus can be configured to record
AC and DC values for these test conditions:
Normal Polarity Normal Condition
Single-Fault Condition, Line 2 Open
(NP:NC)
(NP:SF L2O)
Reverse Polarity Normal Condition
Single-Fault Condition, Line 2 Open
(RP:NC)
(RP:SF L2O)
Overview/Chapter 2 # Page 12