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Measurement technology – Atec Chroma-19032 User Manual

Page 3

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GFI HUMAN PROTECTION (19032-P)

FLOATING CIRCUIT FUNCTION (19032-P)

For the opoerator to using the Safety Test Instrument more safely, Chroma invented
Floating circuit which is based on the leading technology. Under Floating status, the
grounding leakage current will not exceed 3.5mA no matter what the withstand voltage
If the person touches any terminal. It complies with EN50191 for outputting to ground
terminal within current limit and for protecting the operator from electrical to injury.

SUPPORT TOUCH CURRENT / LEAKAGE CURRENT TEST

500VA HIPOT TEST (19032-P)

The High Limit of Hipot test currently is often from 5 to 10mA. However, there is still a few DUTs such
as Safety Integrated Analyzer of EMI Filter or large-sized motor require massive power. The 19032-P
enhances the power of 19032 largely to equip the capabilities of outputting and measuring AC 100mA/
DC 20mA.

To integrate the high charge current with other safety tests as any integrated analyzer for the
users to use higher leakage current or large-sized electrical safety equipment. This brings the best
efficiency to production line and quality assurance.

The design of 500VA also complies with the requirement of IEC/UL output power to add the
selection function of "no protection for trip circuit under short current 200mA and 100mA".

Measurement Technology

The ultimate purpose of safety testing is to protect users from electric hazard.The
19032-P also has GFI function to protect the operator. GFI function can cut off the power
output immediately while human body is suffering electric shock. GFI function detects the
current from Earth GND (Ioperator) and LOW terminal (Idevice). The voltage output will
be cut off if the current is over 0.5mA.

The current brimmed after flow through insulation resistance,
is called as Leakage Current. When the leakage current goes
through human body, the current flows to Earth via human
body ,which can cause electric damage. The leakage current
is testing under operating state. A human body RC network
will be added in leakage current test, it can simulate the value
of leakage current in real condition.

The leakage current has different testing modes and
standards in accordance with different safeties and test
points. The most often seen current tests are Earth Leakage
Current, Patient Leakage Current and Patient Slave Leakage
Current.

The 19032 is used with different dynamic leakage current
modules and human body simulation equivalent circuit for
the requirements of various safety modules. It can apply to
Electrical Safety Testing for Household Appliance, Video
Product, Medical Equipment and etc.

A

Hi-Z

Line

120V

DUT

Volt Meter

Human Body

RC Network

Table

Probe1

Probe2

Neutral

S

1

S

2

S

3

S

4

S

5

Input Hi

Input Lo

UL 544

NON PATIENT

1.5K

0.15µF

Input Hi

Input Lo

Input Hi

Input Lo

Input Hi

Input Lo

Input Hi

Input Lo

1K

10.2

500

0.45µF

1K

10K

1.5K

500

0.22µF

10K

0.022µF

0.15µF

0.015µF

UL 544

PATIENT CARE

UL 1563

IEC 60335-1

IEC 601-1

UL 2601-1

IEC 60601-1

UL 1950

UL 3101-1

IEC 60950

IEC 1010

IEC 60990 / Fig4 Reaction

UL 1950 U1

IEC 60990

Fig3 Unweighted

Input Hi

Input Lo

1.5K

500

0.22µF